NSP783 Motor Manual English Version

NARI Nanjing Sino-German Protection & Substation Control Systems Ltd.

NSP783

Motor Protection and Monitoring Device

Technical Manual

Nanjing Sino-German Protection & Substation Control Systems Ltd

July, 2006

* This manual is suitable for NSP783 V3.23 and higher version program * Small changes towards this manual or products in the future will occur, please check

whether the actual product conforms to the version of manual * Reprinting and duplication is prohibited, 3rd version and 1st print in Nanjing, July, 2006

NARI-NSPS NSP783 Motor Protection and Monitoring Device Technical Manual

1 Introduction NSP783 motor protection and monitoring device (hereinafter referred to as device) is suitable for 3-10kV

asynchronous motor, which can be combined together or installed at the switch cabinet. The device is equipped with strong protection & monitoring function.The high-precision data acquisition system can reliably gather external switch-in electric quantity such as Ua, Ub, UC, 3Uo, terminal measurement Ia, Ib, Ic, protection Ia, Ib, Ic, 3I0, and calculate the electric quantity information such as Uab, Ubc, Uca, I1, I2, P, Q, COS, Wp+, Wp-, Wq+, Wq- and F as input of each logic function; 21-way binary input and 2-way pulse can be gathered. The device is equipped with operation circuit. The maximal configuration for protection and auto-control function of device is as follows:

Two-stage phase over-current protection (the start_up value of each stage can be changed into one bigger setting value when motor is started, to avoid starting current of motor)

Sensitive earth protection/two-stage zero sequence over-current protection Under-voltage protection Over-voltage protection Over-load protection (two-stage time limitted over load and one-stage inverse time limitted overload) Four-way external trip Negative sequence over-current protection (two-stage time limitted negative sequence over-current

protection and one-stage inverse time limitted negative sequence over-current protection) Rotor-locked protection Over starting time protection Thermal overload protection Reverse interlocking TV circuit supervision

The functions above can be configured flexibly in practical situations, the setting value interface is concise and clear, and the spot debugging & maintenance is very convenient. Features of device:

The core of hardware platform is high performance 32-bit DSP+ARM dual processor which is reliable and high efficiency

Large friendly LCD, localized human-computer interface, operation is convenient The operation process of protection and auto-control function is clear, the information record is

complete with continual fault record mode, the total length for fault record is 25 second, and it offers complete accident recall information

4 sets of setting values can be copied and calibrated conveniently which are used for change of operation mode

Offer the debugging & analytical software Ncp-manager based on WINDOWS interface, which can greatly enhance the efficiency of debugging calibration and implement analysis of accident and fault record

The output can be configured by each protection and control flexibly, which is implemented by software logic array

3 fast Ethernet can be offered as automatic communication interface; and dual 485 communication interface can also be offered

Several clock synchronization modes: clock synchronization by communication, clock synchronization by pulse per minute and clock synchronization by IRIG-B encoding

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2 Technical parameters

2.1 Rated parameters 2.1.1 Rated DC voltage: 220V or 110V, allowable deviation -20%～+20%. 2.1.2 Rated AC data

a) AC voltage: 100V. b) AC current: 5A or 1A. c) Rated frequency: 50Hz.

2.1.3 Power consumption a) AC circuit: no greater than 20W in normal operation, no greater than 25W when device operates b) AC voltage circuit: Each phase is no greater than 0.5VA c) AC current circuit: each phase is no greater than 1.0VA when rated current is 5A; each phase is no greater than 0.5VA when rated current is 1A.

2.1.4 Binary quantity, pulse and GPS a) The input level of Binary quantity is DC220V or DC110V (depending to order number, see Appendix

4); b) The pulse and GPS input is DC24V, which should be input in active; GPS input can also adopt

differential mode (see Appendix 4).

2.2 Main technical performance 2.2.1 Precise working scope and deviation is as Table 1

Table 1 Precise working scope and deviation Protection circuit Measurement circuit Measurement scope Precision † Measurement scope Precision

Three-phase voltage 0.4V－120V 0.2% Share with protection Same as protection Three-phase current 0.08In－20In 3% 0-2.0In 0.2%

Zero sequence voltage 0.4V－120V 3% High sensitivity * 0.002A-1.200A 3% ------ ------ Zero-sequence

current Wide scope * 0.05In－20In 3% ------ ------

† The base value is rated value. * The device should be equipped with zero sequence TA with corresponding feature according to whether the

earth mode is effective earth or non-earth earth. This information should be offered when it's ordered (see Appendix 4). The high sensitivity zero sequence TA is suitable for non-effective earth system, and the wide scope zero sequence TA is suitable for effective earth system 2.2.2 Overload capacity

AC current circuit: 2 times of rated current, continuous operation; 10 times of rated current, allow 10 seconds; 40 times of rated current, allow 1 second; AC voltage circuit: 1.2 times of rated voltage, continuous operation.

2.2.3 Contact capacity Output trip contact: 8A current is allowed for long time, off-current is 0.3A (DC220V, time constant L/R

5ms±0.75ms inductive load), Output signal contact: 8A current is allowed for long time, off-current is 0.3A (DC220V, time constant L/R

5ms±0.75ms inductive load) 2.2.4 Trip close current

It can self-adapt the current of 0.5A～4A, if the practical current is greater than 4A, resistance can be added to adapt it. 2.2.5 Setting error for various elements

Current element setting value error: <±5% Voltage element setting value error: <±5% Time element: <±50ms

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Inverse time limitted time element: <±1%±40ms of setting value 2.2.6 Whole group pickup time (including built time of relay)

Built pickup time of quick-action stage: when it's 1.2 times of setting value, the error is no greater than 40ms 2.2.7 Measurement system precision

Current, voltage measurement precision: <±0.2%×rated value Power measurement precision: <±0.5%×rated value Frequency measurement precision: <±0.01Hz

2.2.8 Binary input resolution 2ms

2.2.9 Binary input pickup voltage 80% rated voltage

2.3 Insulation property 2.3.1 Insulation resistance

Use the megohmmeter with 500V open circuit voltage to measure the insulation value between the alive part & non-alive part of device and shell as well as among electric-unassociated circuits, under normal test atmospheric condition, the insulation resistance of each circuit at all levels isn't less than 20M. 2.3.2 Dielectric strength

In normal test atmospheric condition, the device can endure the industrial frequency withstand voltage test which lasts 1 minute and the frequency is 50Hz and voltage is 2000V, and there is no breakdown, flashover and component damage phenomena. When the voltage is applied to any tested circuit during the test course, other circuits implement equal-potential interconnection earth. 2.3.3 Impulse voltage

Under normal test atmospheric condition, the power input circuit, AC input circuit and output contact circuit of device is earthed, and the circuit can endure short time impulse of 1.2/50s standard lightning wave. The voltage test open-circuit test voltage is 5kV. 2.3.4 Moisture-proof and heat-proof performance

The device should be able to endure steady-state damp heat test specified by GB/T2423.9 which the test temperature is 40±2, the relative humidity is 93%±3% and the test time is 48h; measure each circuit according to requirements of 2.3.1 within 2 hours before the test is completed, the insulation resistance between exposed non-live metal part and shell and among circuit which are separated electrically shouldn't be less than 1.5MΩ. The dielectric voltage withstand strength shouldn't be less than 75% of dielectric strength test voltage amplitude value specified in 2.3.2.

2.4 Anti-electromagnetic interference performance 2.4.1 Impulse interference

The device can endure interference test specified by GB/T14598.13-1998. The test supply frequency is 100 kHz and 1 MHz, the test voltage is the damped oscillating wave which the common mode is 2500V and differential mode is 1000V. When test is implemented, apply power on tested device in advance, and the test voltage device can operate properly with superimposed interference according to critical conditions listed in Table 3.1.1 of GB/T14598.13. 2.4.2 Fast transitional interference

The device can endure IV level 4kV fast transitional interference test specified by GB/T14598.10-1996 standard. 2.4.3 Electrostatic discharge

The device can endure IV level electrostatic discharge test (spatial discharge 15kV, contact discharge 8kV) specified by GB/T14598.14-1998 standard. 2.4.4 Radio-electromagnetic field interference

The device should be able to endure III level radio-electromagnetic field interference test specified by GB/T14598.9-1995 standard. 2.4.5 Surge

It should pass the interference test with III level surge impact anti-interference which is specified by GB/T17626.5 standard (common mode is 2000V, differential mode is 1000V)

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2.5 Mechanical performance 2.5.1 Vibration

The device can endure the vibratory response test with I asperity level specified in 16.2.3 of GB/T 7261-2000 Fundamental Test Methods for Relay and Device; the device can endure the vibration endurance test with 1 asperity level which is specified in 16.3.2 of GB/T7261-2000. 2.5.2 Impulse

The device can endure the impulse response test with 1 asperity level specified in 17.4.1.1 of GB/T7261-2000; and the device can endure impulse endurance test with 1 asperity level specified in 17.5.1 of GB/T7261-2000. 2.5.3 Impact

The device can endure the impulse impact test with 1 asperity level specified in 18.4 of GB/T7261-2000.

2.6 Ambient conditions a) Ambient temperature Operating temperature：-25 +55， the 24-hour mean temperature won’t exceed 35。 Storage temperature：－40～+85。 If the energizing quantity isn't applied under limit value, the device won't appear non-reversible change; after

the temperature is recovered, the device should be able to operate normally. b) Relative humidity：The monthly mean maximal relative humidity in the month with maximal rainfall is

90%, and the mean monthly minimum temperature is 25 and there is no condensation on the surface; when the maximum temperature is +40, the mean maximal relative humidity won't exceed 50%

c) Atmospheric pressure：86kPa－106kPa，66kPa－110kPa（according to requirements of contract）.

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3 Device hardware

3.1 Cabinet structure The device adopts standard 1/3, 19 inch 6U cabinet. The front panel of the integration panel, including

localized LCD, signal indicating lamp and operation keyboard and so on. The cabinet adopts back-insertion & dust prevention & anti-vibration design to ensure that the device can maintain high reliability when it's installed in the place with severe condition. The size of cabinet is as Appendix 3.

3.2 AC plug-in The AC plug-in includes voltage input and current input. The number of voltage and currents input element

for various models is different.

3.3 CPU plug-in The protection CPU adopts 32-bit DSP chip, which can implement 120 trillion floating-point calculation per

second, and there is 34Kx32-bit RAM. High speed 64Kx32-bit extension out-memorizer RAM, 512Kx8-bit FLASH, 512Kx8-bit alive maintaining NVRAM and 8Kx8-bit serial EEPROM. The schematic diagram of CPU module is as Figure 1.

The data acquisition system adopted by protection system is composed of high reliability 14-bit A/D converter, multi-way switch and filtering circuit. The A/D conversion chip has the features that the conversion speed is fast, the sampling variance is small, the power consumption is little and stability is good and so on. The sampling circuit of this device has no adjustable element and requires no regulation on the spot, which has high reliability.

alog input 01

nalog input 16

Magnifier

A/D conversion

Channel earth generator

Mode control register

Read/write contro

NVRAM 1M×8

64K×32 SRAM

quantity input 01

quantity input 16

quantity input 01

quantity input 24

Optical

isolation

Data buffer

Data lock

Multi-w

ay sw

itcher

34K×32

512K×8 FLASH

Data buffer

Data buffer

8K×8 Serial EEPROM

Optical

isolation

D ecipher w atchdog real-tim e clock

320V C 33 inner R A M

Figure 1 Schematic diagram of protection CPU module

The CPU plug-in adopts multilayer printed circuit board and surface mount technology, which greatly enhance the reliability and anti-electromagnetic interference capability of device.

3.4 Man-machine interaction MMI plug-in The MMI module is the human-computer interface which is developed based on 32-bit ARM chip, which is

used for man-machine interaction of device and handles relevant communication task. It has 128X128 wide temperature and yellow-green LCD (with temperature compensation function); there are 4 LED lamps; the communication ports: one isolated RS232 port (as maintenance port), one isolated RS422/RS485 (communicate with DSP board), two isolated RS485 ports, three 10M Ethernet ports (communicate with system, specific configuration is optional). The communication physical port mode of Ethernet is RJ45 socket, the communication media is shielded category 5 twisted-pair or optical fiber; the RS485 communication physical port is phoenix terminal, and the communication media is shielded twisted pair or optical fiber. The program memory of MMI

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module is 512KB and the data memory is 256KB.The LCD of MMI module can display 8 line×8 row Chinese characters; the human-computer interface is friendly and clear. The block diagram of MMI and DSP module communication connection is as Figure 2.

RS

232

mai

nten

ance

por

t

256KB RAM

DSP moduleDSP CPU

RS422 port

Eth

erne

t por

t

RS

485

port

512KBFLASH

ARM7TDMILarge LCD

9-button keyboard

Figure 2 Block diagram of MMI and DSP module communication connection

3.5 Relay plug-in

The relay plug-in includes protection operation signal relay, binary output, remote control relay and operation circuit. The trip and close circuit of operation circuit can self-adapt the current of 0.5A～4A, if the practical current is greater than 4A, the resistance can be added to adapt it.

3.6 Power supply plug-in Adopt AC inverting power, the AC 220V or 110V input will utilize the inverting principle output three

groups of AC voltage which is 5V, ±12V and 24V via anti-interference filtering circuit, these three groups won't be earthed; moreover, adopt floating mode which isn't connected with shell. +5V is the working power supply of device computer system, ±12V is the power of data acquisition system, 24V is used for power of driving relay and medium power of switch-in.

Furthermore, the on-off input of 21-way DC220V/DC110V and 2-way pulse input are also offered (Wp(pulse) can be re-used as GPS pulse input and IRIG-B pulse input).

3.7 Connection diagram of device system

Switch-in circuit

3I03I0'

protection current

Zero-sequence current

Indi

catin

g la

mp

LCD

Key

boar

d

MMI board

CPU plug-in

Ua

Un

IA

IC

IB

UbUc

3U0'

IB'

IC'

3U0

Measurement current

Zero sequence voltage

Voltage

AC plug-in

AD switch

EEPROM

RS485 network or Ethernet

Mai

nten

ance

por

t

FLASH

SCADA

Communication port

NVRAM

DSP SRAM

Switc

h-ou

t ci

rcui

t

Output plug-in

Binary input

Switc

h-in

con

vers

ion

circ

uit

Pow

er su

pply

plu

g-in

IA'

Ib

IaIa'

Ib'IcIc'

Figure 3 Connection diagram of device system

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4 Protection principle and calibration explanation Protection function of the NSP7 series uses block configuration and display. In the “Device Configuration” view of the “Setting” menu of NCP-manager Tools, the protection functions to be used can be enabled and disabled. Only enabled protection function setting can be seen on the MMI setting interface. Protection functions not used would be disabled. It should be noted that the opening or closing of the protection functions does not have any influence on the setting of the corresponding block. Therefore, before using new setting block for the running device, corresponding safety measures should be taken, for example, remove the exit press board, etc., so as to prevent mistake action by the device. Wait till the protection function is open before entering the corresponding setting menu for setting and confirmation.

The setting value sheet for protection function configuration is as Table 3: Table 3 Setting value sheet of protection function configuration

Setting value Setting value scope Phase over-current protection configuration Enable/Disable Zero sequence over-current protection configuration Enable/Disable Sensitive earth configuration Enable/Disable Over-voltage protection configuration Enable/Disable Under-voltage configuration Enable/Disable Over-load protection configuration Enable/Disable Negative sequence over-current protection configuration Enable/Disable External trip configuration Enable/Disable Rotor-locked protection configuration Enable/Disable Over starting time protection configuration Enable/Disable Thermal over-load protection configuration Enable/Disable Reverse interlocking configuration Enable/Disable TV circuit faultprotection configuration Enable/Disable

4.1 Two-stage time limitted phase over-current protection 4.1.1 Outline of principle

This device is equipped with two-stage time limitted phase over-current protection, both two stages are 3-phase, each stage over-current protection is equipped with one independent time limitted, any one phase current is greater than setting value, and protection is operated via calibration delay. The start_up value of each stage can be changed into one bigger setting value for short time when motor is started, to avoid pickup current of motor. The start_up start value of each stage is valid for short time, and the valid time is the "Motor Start Time" set in the "System Parameter”. The motor start_up check logic detailed diagram is as the figure:

Figure 7 Motor start_up check logic diagram

Note: The motor check logic is active all the time, which plays role on rotor-locked protection and long time start_up protection; if the maximal current of three phases is greater than 0.05×Ie and less than 1.20×Ie when the motor start_up time-keeping completes, the device will give motor start_up end signal, and this signal can drive the binary output.

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I>> protection logic diagram is the figure below, and I> is same as stage I.

1202 I1DZ

Ia>I1DZIa

Motor start_up

Ia>I1DSDZ

12022 I1DSDZ

Ia

A

B

C

＆

OR

T 0

1203 I1T

Function switch

I>> protection switch

Phase I>> setting value sheet12011-phase I>> protection switch [GL1TT]1202 I>> strat_up value [I1DZ]12022 I>> starting up start_up value [I1DSZD]1203 I>> time limitted [I1T]

I>> time out

I>> trip

I>> picked up

C-phase over-current picked up

B-phase over-current picked up

A-phase over-current picked up

12011 GL1TT

ON

OFF"1"

＆OR

OR

Figure 8 I>> protection logic diagram

4.1.2 Setting value sheet and calibration explanation 1．Two-stage time limitted phase over-current protection setting value sheet is as Table 5:

Table 5 Two-stage time limitted phase over-current protection setting value sheet Setting value Setting value scope Step length

Phase I>> protection switch ON/OFF / Phase I> protection switch ON/OFF /

I>> start_up value 0.05In～20.00In 0.01In I>> start_up start value 0.05In～20.00In 0.01In

I>> time limitted 0.00s～99.99s 0.01s I> start_up value 0.05In～20.00In 0.01In

I> start_up start value 0.05In～20.00In 0.01In I> time limitted 0.00s～99.99s 0.01s

2．Calibration explanation All the setting values of current setting value are per-unit values, the current base value In is the phase TA

secondary rated value 5A/1A in system parameters.

4.2 Two stage zero-sequence current protection 4.2.1 Outline of principle

Towards effective earth system, the device sets two-stage zero sequence over-current protection to indicate earth protection; the two stage zero sequence over-current is respectively equipped with one stage time limitted, which can be switched independently, and zero sequence over-current doesn't set zero-voltage start_up and direction block. The logic diagram for zero-sequence current protection is as Figure 6.

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1302 I01DZ

3I0>I01DZ3Io

IE>> protection switch-in

Zero sequence over-current protection setting value sheet13011 IE>> protection switch[LXGL1TT]13012 IE> protection switch[LXGL2TT]1302 IE>> start_up value[I01DZ]1303 IE>> time limitted[I01T]IE>> trip

13011 LXGL1TT

Trip

"1"

IE>> time out

IE>> picked up

1303 I01T

T 0

Off

Function switch 1304 IE> strat_up value[I02DZ]1305 IE> time limitted[I02T]

1304 I02DZ

3I0>I02DZIa

IE> protection switch-in

IE> trip

13012 LXGL2TT

ON

"1"

IE> time out

IE> picked up

1305 I02T

T 0

OFF

Function switch

Figure 9 Logic diagram of zero-sequence current protection

4.2.2 Setting value sheet and calibration explanation 1．Setting value sheet

Table 6 Zero sequence over-current protection setting value sheet Setting value Setting value scope Step length

Zero sequence I>> protection switch ON/OFF / Zero sequence I> protection switch ON/OFF / Zero sequence I>> start_up value 0.05In～20.00I0n 0.01I0n Zero sequence I>> time limitted 0.00s～99.99s 0.01s Zero sequence I> start_up value 0.05In～20.00I0n 0.01I0n Zero sequence I> time limitted 0.00s～99.99s 0.01s

2．Calibration explanation The zero-sequence current protection is co-existent with sensitive earth in software; however, these two

protection are different towards the measurement range and precision of zero sequence TA: the dynamic range for zero-sequence current protection TA should be wider, the wide range TA with 0.05～20In dynamic range is selected; the sensitive earth has higher requirements towards precision of current measurement, too large dynamic range is unnecessary, the high sensitivity TA with 0.002A～1.200A measurement range is selected. In hardware, these two TA share one TA bit, namely, the model of zero sequence TA determines which protection is available is software.

When it's used, related setting is in the system parameter: "System Earth Mode Selection": If the zero sequence TA of device selects the wide range TA with 0.05～20In dynamic range, the "System Earth Mode" should be set for "Earth"; if the zero sequence TA of device selects high sensitivity TA with 0.002A～1.200A dynamic range, the "System Earth Mode" should be set for "Isolated System" or "Compensated System" according to the primary system. In order to avoid error, after the "System Earth Mode" is set, only corresponding protection can be input. If it's set for "Earth", the zero-sequence current protection can be switched and correctly implement function; however, sensitive earth will be blocked and won't be implement even if it's switched in. If it's set for "Isolated System" or "Compensated System", the sensitive earth can be switched in and correctly implement function; however, the zero-sequence current protection will be blocked and won't be implement even if it's switched in.

The setting values of zero-sequence current setting value are per-unit values, and the current base value I0n is the zero sequence TA secondary rated value in the "System Parameter".

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4.3 Sensitive earth protection 4.3.1 Outline of principle

Single criteria can selected via setting when it's used: zero-voltage or zero current, it will operate when any one exceeds setting value; multiple criteria can also selected, there are two conditions: ① Operate when zero voltage exceeds setting value and zero current exceed setting value; ② Operate when zero voltage exceeds setting value and the active constituent of zero-sequence current exceeds setting value and the corresponding zero sequence power direction is in the operation zone simultaneously. The details of ② condition in the multiple criteria will be explained: Whether the device adopts various criteria to judge single-phase earth in sensitive earth system by setting for "Isolated System" or "Compensated System" according to "Start Point Earth Mode" in the system parameter.

The logic diagram of sensitive earth is as Figure 10:

Figure 10 Logic diagram of sensitive earth check

The prerequisite for judgment of earth direction failure is that the zero sequence voltage check and

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zero-sequence current (amplitude value) check have been started. The direction characteristic curve for judgment of earth direction is changed and adjusted with network system. The direction judgment processes the component which is 90 degree to direction characteristic, not the amplitude value of earth current, this current component is called active constituent. The relay calculates the active power Pea and zero sequence reactive power Per according to the following formula:

In the formula, uE(t) and i E(t) are respectively instantaneous values of zero sequence voltage and

zero-sequence current, and t is the integration cycle. The direction characteristic curve of earth direction judgment is as follows:

Forward

InductionCapacitye

Reverse

(a) Directional characteristic based on

The direction judgment in the neutral point isolated system should be used for direction characteristic of sin measurement, and the criteria is: when forward earth has failure, Per>0 and the active constituent Ier is greater than setting value; when negative direction earth has failure, Per<0 and Ier is greater than setting value.

The direction judgment in the star point compensated system should be used for direction characteristic of cos measurement, and the criteria is: when forward earth has failure, Pea>0 and active constituent Iea is greater than setting value; when negative direction earth has failure, Pea<0 and Iea is greater than setting value.

4.3.2 Setting value sheet and calibration explanation

1．Sensitive earth setting value sheet: Table 7 Sensitive earth setting value sheet

Setting value Setting value scope Step length Sensitive earth protection switch Trip/Alarm/Off / Criteria selection Zero voltage or zero current/ zero voltage and zero current /

(b) Directional characteristic based

InductionCapacitye

Forward Reverse

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Directional element switch Active/inactive / Zero sequence voltage start_up value 0.01～1.00Un 0.01Un Zero sequence voltage start_up delay 0.00s～99.99s 0.01s Zero-sequence current start_up value 0.005A～1.200A 0.001A Sensitive earth operation time limitted 0.00s～99.99s 0.01s

2．Calibration explanation When the criteria selection is set for zero voltage or zero current, it belongs to the single criteria; when the

criteria selection is set for zero voltage and zero current, the directional element is set for inactive, it belongs to ① condition of multiple criteria; when the criteria selection is set for zero voltage and zero current, the directional element is set for switch-in, it belongs to ② condition of multiple criteria. The zero-sequence current setting value in sensitive earth adopts nominal value. The zero sequence voltage setting value adopts per-unit value and the base value Un is 100V.Sensitive earth protection can be inactive through selecting control word, it can select switch-in and give alarm when operates or switch in and trip when operates.

4.4 Over-load protection 4.4.1 Outline of principle

The device includes two-stage time limitted and one-stage inverse time limitted over-load, the over-load protection function is inactive during the motor start_up process; after the motor start_up is completed, the over-load protection will be automatically switched in, the over-load is 3-phase, and each stage can be independently set for inactive, alarm or trip. The over-load inverse time limitted characteristic curve can select IEC normal inverse time limitted, abnormal inverse time limitted, extreme inverse time limitted or long inverse time limitted. Each kind of inverse time limitted characteristic equation is listed as follows:

Normal inverse time limitted： TpIpI

t1)/(

14.002.0 −

=

Abnormal inverse time limitted： TpIpI

t1)/(

5.13−

=

Extreme inverse time limitted： TpIpI

t1)/(

802 −

=

Long inverse time limitted： TpIpI

t1)/(

120−

=

In the formula, Ip is the inverse time limitted start_up value; Tp is the inverse time limitted time constant. The logic diagram of over-load stage I and inverse time limitted stage is as Figure 11, the logic of over-load

stage II is same as over-load stage I.

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Figure 11 Logic diagram of over-load stage I and inverse time limitted stage


Table 8 Over-load setting value sheet Setting value Setting value scope Step length

Over-load stage I protection switch ON/OFF /

Over-load stage Ⅱ protection switch ON/OFF /

Over-load inverse time limitted stage protection switch ON/OFF /

Over-load stage Ⅰ start_up value 0.05In～20.00In 0.01In

Over-load stage I time limitted 0.00s～99.99s 0.01s

Over-load stage Ⅱ start_up value 0.05In～20.00In 0.01In

Over-load stage Ⅱ time limitted 0.00s～99.99s 0.01s

Over-load inverse time limitted curve Normal, abnormal, extreme and long time /

Over-load inverse time limitted start_up value 0.05In～20.00In 0.01In

Over-load inverse time limitted time constant 0.00s～99.99s 0.01s

2．Calibration explanation When the over-load protection is calibrated to alarm and the over-load protection operates, it will be used for

signal output according to output configuration (alarm relay and signal relay); even if the previous 11 binary outputs are connected with over-load, they won't be output and alarm lamp will be on. The alarm lamp won't be maintained and will return with return of over-load. When it's calibrated to trip, the output will be driven according to calibration output, the trip lamp is on and maintained, it should implement manual or communication revert or external binary input revert after protection returns.

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4.5 Over-voltage protection 4.5.1 Outline of principle

The device includes one stage of over-voltage protection, when any line voltage is greater than the over-voltage protection setting value, the over-voltage protection implements delay tripping via calibration. In addition, the over-voltage protection can be blocked via switch position, when the "Switch Open Block" control word is set for "Switch-in", the switch is changed to post-open 1s and the over-voltage protection is blocked. The logic diagram of over-voltage protection is as Figure 10.

5003 GDY1DZ

Uab>GDY1DZUab

Over-voltage protection switch

Over-voltage protection setting value sheet5001 over-voltage protection switch[GDY1TT]5003 over voltage strat_up value[GDY1DZ]5004 over voltage time limitted[GDY1T]5007 switch open block[GFWBSTT]Over voltage picked up

5001 GDY1TT

ON

OFF"1"

Over voltage/time out

Over voltage/trip

5004 GDY1T

T 0

Function switch

5003 GDY1DZ

Ubc>GDY1DZUbc

5003 GDY1DZ

Uca>GDY1DZUca

OR

＆

5007 GFWBSTT

"1"

1.0S 0Breaker open

Figure 12 Over-voltage protection logic diagram


Table 9 Over-voltage protection setting value sheet

Setting value Setting value scope Step length

Over-voltage protection switch ON/OFF /

Overvoltage start_up value 1.00～1.50Un 0.01Un

Overvoltage time limitted 0.00s～99.99s 0.01s

CB open block ON/OFF /

2．Calibration explanation The over voltage setting value adopts per-unit value and the base value Un is 100V.

4.6 Under-voltage protection 4.6.1 Outline of principle

The device includes one stage under-voltage protection, when all 3 phases of line voltage are less than under-voltage protection setting value, the under-voltage protection implements delay tripping via calibration. In order to prevent protection operation in TV fault, the under-voltage protection can be blocked via " TV fault Start_up" signal (the prerequisite is switch-in of TV fault check function); the switch position can also block under-voltage protection, when the "Switch Open Block" control word is set for "Switch-in", the switch is changed to post-open 1s, and the under-voltage protection is blocked; furthermore, the under-voltage protection can be blocked by external switch-in. The under-voltage protecion logic diagram is as Figure 11.

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Figure 13 Under-voltage protection logic diagram


1．Setting value sheet Table 10 Under-voltage protection setting value sheet

Setting value Setting value scope Step length Under-voltage protection switch ON/OFF / Under-voltage protection start_up value 0.01～1.00Un 0.01Un Under-voltage protection time limitted 0.00s～99.99s 0.01s TV fault block under-voltage protection On/Off / CB open block ON/OFF /

2．Calibration explanation The under voltage setting value adopts per-unit value and the base value Un is 100V.

4.7 TV fault alarm 4.7.1 Outline of principle

Criteria of TV fault: (1) If three line voltage is less than 8V, if some phase current is greater than 0.2A, it'll be judged as 3-phase voltage loss. (2) If the sum of three-phase voltage is greater than 8V, the maximal line voltage is less than 16V, it'll be judged as two-phase TV fault. (3) If the sum of three-phase voltage is greater than 8V, the difference of maximal line voltage and minimal line voltage is greater than 16V, it'll be judged as single-phase TV fault or two-phase TV fault. The return condition of TV fault is that the voltage must be normal (min(Uab,Ubc,Uca)>70V) except the condition above isn't met.


Table 11 TV fault setting value sheet Setting value Setting value scope Step length

TV fault check switch ON/OFF / TV fault check delay 0.00s～99.99s 0.01s

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2．Calibration explanation When TV is broken, set the output for output and lighten alarm lamp, when the voltage is recovered normal,

the alarm lamp automatically reverts. The TV fault check function is related with under voltage protection function; if the under voltage protection

switches in TV fault block function, this function must be switched in.

4.8 External trip 4.8.1 Outline of principle

Binary input trip implements the function of non-electric quantity protection, the device YX8-YX11 is used to respond non-electric quantity protection signal such as "Gas", the device trips when the binary input is valid.

External bianry input T 0 External trip

Figure 14 External binary input operation logic diagram


Table 12 External trip setting sheet Setting value Setting value scope Step length

External trip protection 1 switch ON/OFF /

External trip protection 1 time limitted 0.00s～99.99s 0.01s







2．Calibration explanation The practical pickup time of external trip is the sum of binary input filtering time and trip delay.

4.9 Negative sequence over-current protection 4.9.1 Outline of principle

When three phases motor current are asymmetric, the negative sequence current will be generated; the negative sequence current will generate 2 times of industrial frequency current in the rotor and the heat of rotor is increased. If the negative sequence current is bigger, the rotor will be over-heated, endangering safety operation of motor.

This device sets two-stage time limitted negative sequence over-current protection and one-stage inverse time limitted negative sequence over-current protection. The negative sequence current adopts two-phase type algorithm which is calculated via the following formula:

∗∗∗

+= IeIeI cajj 90

3330

33

2

oo

The inverse time limitted characteristic curve of inverse time limitted negative sequence over-current protection can select IEC normal inverse time limitted, abnormal inverse time limitted, extreme inverse time limitted or long inverse time limitted. Each kind of inverse time limitted characteristic equation is listed as follows:

-16-


Normal inverse time limitted： TpIpI

t1)/(

14.002.0

2 −=

Abnormal inverse time limitted： TpIpI

t1)/(

5.13

2 −=

Extreme inverse time limitted： TpIpI

t1)/(

802

2 −=

Long inverse time limitted ： TpIpI

t1)/(

120

2 −=

In the formula, Ip is the inverse time limitted start_up value; Tp is the inverse time limitted time constant. The logic diagram of negative sequence over-current protection is as Figure 15.

4002 I21DZ

I2>I21DZI2

Negative sequence I>> protection switch

Negative sequence over-current protection setting value sheet

40011 negative sequence I>> switch[FXGL1TT]40012 negative sequence I> switch[FXGL2TT]4002 negative sequence I>> strat_up value[I21DZ]4003 negative sequence I>> time limitted[I21T]Negative sequence

I>> trip

40011 FXGL1TT

ON

"1"

Negative sequence I>> picked up

4003 I01T

T 0

OFF

Function switch4004 negative sequence I> start_up value[I22DZ]4005 negative sequence I> time limitted[I22T]

4002 I21DZ

I2>I21DZI2

Negative sequence I> protection switch

Negative sequence I> trip

40012 FXGL2TT

ON

"1"

Negative sequence I> picked up

4003 I01T

T 0

OFF

Function switch

Figure 15 (a) Logic diagram of negative sequence over-current time limitted stage

4008 I21DZ

I2>I23DZI2

Negative sequence inverse time limitted stage protection switch

Negative sequence over-current protection setting value sheet40012 negative sequence inverse time limitted stage switch[FXGL3TT]4006 negative sequence inverse time limitted curve selection[I2QX] Standard/abnormal/extreme/Long4008 negative sequence inverse time limitted strat_up value[I23DZ]Negative sequence

inverse time limitted stage trip

40013 FXGLTT

ON

"1"

Negative sequence inverse time limitted stage picked up

Function switch

4006 I2QX 4009 I23T

OFF

4009 negative sequence inverse time limitted time constant[I23T]

Figure 15 (b) Logic diagram of negative sequence over-current time limitted stage


Table 13 Negative sequence current protection setting value sheet Setting value Setting value scope Step length

I2>> protection switch ON/OFF /

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I2> protection switch ON/OFF / I2>> start_up value 0.05In～20.00In 0.01In I2>> time limitted 0.00s～99.99s 0.01s I2> start_up value 0.05In～20.00In 0.01In I2> time limitted 0.00s～99.99s 0.01s Negative sequence over-current inverse time limitted stage switch ON/OFF /

Negative sequence inverse time limitted curve selection

Normal, abnormal, extreme and long time /

Negative sequence inverse time limitted start_up value 0.05In～20.00In 0.01In

Negative sequence inverse time limitted time constant 0.00s～99.99s 0.01s

2．Calibration explanation All the setting values of negative sequence over-current setting value are per-unit values, the current base

value In is the phase TA secondary rated value 5A/1A in system parameters.

4.10 over start_up time protection ( Long time start_up protection ) 4.10.1 Outline of principle

The over start_up time protection offers protection for motor during the motor start_up process. During the motor operation course, the over start_up time protection is automatically inactive. After the motor is started and within one cycle after time-out of "Motor Start_up Time" time-keeping, if any one phase current is greater than 1.2 times of "Motor Rated Current", the over start_up time protection will trip. The logic block diagram of over start_up time protection is as Figure 14.

Figure 16 Logic diagram of long time start_up protection


Table 14 Long time start_up protection setting value sheet Setting value Setting value scope Step length

Long time start_up protection switch ON/OFF /

2．Calibration explanation The trip current of over start_up time protection rests with "Motor Rated Current" of system parameter, and

the value is 1.2 times of rated current (see logic detailed diagram of motor start_up); the trip current of over start_up time protection rests with "Motor Start Time" of system parameter. After the motor parameter is calibrated, the over start_up time protection requires no other setting value.

4.11 Rotor-locked protection 4.11.1 Outline of principle

The rotor-locked protection offers protection for motor during the motor operation course, and it will be automatically inactive during the motor start_up course. If the positive-sequence current is greater than setting

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value during the motor normal operation course, the rotor-locked protection will implement delay tripping via calibration. The positive-sequence current adopts two-phase type algorithm which is calculated via the following formula:

*90

*30

* 00

33

331 IceIaeI jj −− +=

Rotor-locked protection logic block diagram is Figure 17.

4102 DZHDZ

I1>DZHDZI1

Rotor-locked protection switch

Rotor-locked protection setting value sheet4101 rotor-locked protection switch[DZHTT]4102 rotor-locked current start_up value [DZHDZ]4103 allowable rotor-locked time[DZHT]

Rotor-locked protection time out

4101 DZHTT

ON

OFF"1"

Rotor-locked protection trip

Rotor-locked protection start_up

Function switch

＆

Motor start_up4103 I1T

T 0

Figure 17 Rotor-locked protection logic diagram


1. Setting value sheet

Table 15 Rotor-locked protection setting value sheet Setting value Setting value scope Step length

Rotor-locked protection switch ON/OFF / Rotor-locked current start_up value 0.05In～20.00In 0.01In Allowable rotor-locked time 0.00s～99.99s 0.01s

2．Calibration explanation All the setting values of rotor-locked setting value are per-unit values, the current base value In is the phase

TA secondary rated value 5A/1A in system parameters.

4.12 Thermal over-load protection 4.12.1 Outline of principle

The influence from motor positive sequence and negative sequence current towards motor heating is different. The thermal over-load protection comprehensively considers thermal effect of motor positive sequence and negative sequence current, it offers protection towards over-heating caused by various over-load for motor, and it can be as backup for motor short circuit, over start_up time and rotor-locked.

The device uses equivalent current Ieq to simulate thermal effect of motor as follows: 2

222

11 IKIKIeq += In the formula: Ieq-equivalent current

I1-Positive-sequence current, acquired by two-phase type algorithm. I2-Negative sequence current, acquired by two-phase type algorithm. K1-Positive-sequence current thermal coefficient, K1=0.5 during the motor start_up course, K1=1.0

after start_up ends. K2-Negative sequence current thermal coefficient, K2=3～10, K =6;

According to thermal model of motor, the characteristic curve between the motor pickup time t and equivalent operating current Ieq is offered by the following formula:

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)()(

ln 22

22

∞−

−⋅=

IIII

teq

peqτ

In the formula: Ip-Load current before over-load, if it's in the cold status before over-load, Ip=0. I∞- Pickup current, the specified current limit value without operation of protection. Τ- Time constant, indicating over-load capacity of motor.

The device implements real time monitoring towards thermal content of motor, when the thermal content reaches τ value, the device will trip. When the thermal content reaches Ka*τ value, the thermal over-load alarm signal will be given, Ka is the alarm coefficient, 0<Ka <1.When the thermal content reaches Kb*τ value, the thermal over-load blocking signal will be given, the device thermal blocking output operation disconnects breaker close circuit. Kb is the alarm coefficient, 0<Kb<1.When thermal blocking operates, set "Thermal Revert" valid, the thermal content will be cleared to zero, the thermal blocking output returns, and the close circuit blocking is relieved.

The calibration of pickup current I∞ is implemented according to 1.05～1.15 times of rated current. The thermal time constant τ should be offered by motor manufacturer, if it's not offered by the motor

manufacturer, it can be estimated according to one of the following methods: (1) If the manufacturer offers the thermal limit curve of motor or one group of over-load capacity data, τ will

be calculated according to the following formula:

)(ln 22

2

∞−

=

IIItτ

Take smaller value after calculating one group of τ. (2) If the rotor-locked current I and allowable rotor-locked time t are offered, τ can also estimated according

to the following formula:

)(ln 22

2

∞−

=

IIItτ

(3) Calculate τ according to the following formula:

0

2

θθτ starte TK ××

=

In the formula: θe is the rated temperature rise of motor, K is the pickup current time, θ0 is the temperature rise when motor starts, and Tstart is the start_up time of motor.

The logic diagram of thermal over-load protection is as Figure 18.

Thermal over-load protection switch

Thermal over-load protection setting value sheet4401 thermal over-load switch[RGFHTT]Off/Alarm/Trip4402 thermal over-load pickup current[RCFHDZ]4403 thermal over-load time constant[RGFHT]

4401 RGFHTT

ON

OFF"1"

Function switch

4416 K2

K1*I18I1+K2*I2*I2

I1

I2

4402 GFHDZ

4404 RGFHGJ

100%

GFHT4403

>Thermal revert

¦ Θmax

d¦ Θdt

+1t

¦ Θ=1tI*I

t=tInI*I-Ip*IpI*I-Ib*Ib

4414 RGFHBS

¦ Θ>

¦ Θ>

¦ Θ>

Thermal over-load alarm

Binary output assigned to thermal overload stage block

Thermal over-load trip

4404 thermal over-load alarm stage[RGFHGJ]4414 thermal over-load block stage[RGFHBS]4416 negative sequence current effect coefficient[K2]

Figure 18 Thermal over-load protection logic diagram 4.12.2 Setting value sheet and calibration explanation

1．Setting value sheet

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Table 16 Thermal over-load setting value sheet Setting value Setting value scope Step length

Thermal over-load protection switch ON/OFF / Thermal over-load pickup current 0.05In～20.00In 1s Thermal over-load time constant 60s～3000s 0.01 Thermal over-load alarm stage 0.50～0.99 0.01 Thermal over-load block stage 0.50～0.99 0.01 Negative sequence current effect coefficient 3.00～10.00 0.01

2．Calibration explanation The setting value of pickup current setting value is per-unit value, the current base value In is the phase TA

secondary rated value 5A/1A in system parameters. The setting value of thermal over-load alarm stage and block stage is ratio, and there is no quantity value unit.

4.13 Reverse interlocking output 4.13.1 Outline of principle

Because the bus protection price is higher, the power supply system under 110kV won't set bus protection generally. However, when the bus has failure, it should be eliminated fast. It’s difficult to guaranty quick-action by setting usual over-current protection on inlet; however, because the short-circuit current of bus failure and outlet failure is equal, the selectivity can't be guarantied by installing instantaneous protection on inlet. Accordingly, it's difficult to implement fast elimination of bus failure. The device is equipped with reverse interlocking function and can implement bus fast protection conveniently. The principle is as the following figure:

Outlet 1

Outlet 2

Block

Note

Figure 19 Reverse interlocking schematic diagram

Except for setting selective over-current protection on inlet, increase one set of fast current protection, and the operation current can be calibrated according to over-current; the pickup time can set one short time limitted independently without time influence of outlet over-current protection. When outlet has failure, send one blocking signal to block inlet fast current protection to inlet protection device before the outlet over-current protection starts and operates in delay; however, the over-current protection of inlet will be as the reserve protection of outlet over-current protection; when failure occurs on bus, all outlet won't give blocking signal and the failure will be fast eliminated by inlet fast over-current protection.

This function can be used to decrease inlet protection pickup time towards enterprise power supply system, which is suitable for power supply department to limit the protection time limitted.

The reverse interlocking logic diagram is as follows:

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Figure 20 Reverse interlock logic diagram

4.13.2 Setting value sheet and calibration explanation 1. Reverse interlocking setting value sheet:

Table 17 Reverse interlocking setting value sheet Setting value Setting value scope Step length

Reverse interlocking switch ON/OFF /

2. Calibration explanation The reverse interlocking can drive corresponding relay according to "Binary output Setting" of system

parameter.

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5 System parameter and setting value list The item for device calibration is composed of two parts which are system parameter and each group of

setting value. The system parameters include the municipal power supply system parameters and device parameter required for all functions of device. The calibration of system parameter determines whether the whole device can operate normally, which is as significant as protection setting value. Each item must be correctly set .The system parameters and setting value list are listed in the following table.

Table 18 NSP783 system parameter and setting value list Parameter description Parameter name Byte number Scope Step length Multiplicator

efficient TATV parameter (number: 7)

0 Phase TA primary rated value PhaseTAPRI 2 50A-8000A 1A 1 1 Phase TA secondary rated value PhaseTASEC 2 5A/1A ------ 1 2 Zero sequence TA primary rated value GroundTAPRI 2 50A-8000A 1A 1 3 Zero sequence TA secondary rated value GroundTASEC 2 5A/1A ------ 1 4 Primary rated line voltage VTRatingL_L 2 0.1kV～250kV 0.1kV 10 5 Motor rated current Ie 2 0.05In-20.00In 0.01In 1 6 Motor start_up time Tqd 2 0.1s-300.0s 0.1s 10

Binary input parameter (number: 44) 7 Binary input filter time 1 FilterTime1 2 5-30000 1ms 1 8 Binary input filter time 2 FilterTime2 2 5-30000 1ms 1 9 Binary input filter time 3 FilterTime3 2 5-30000 1ms 1

10 Binary input filter time 4 FilterTime4 2 5-30000 1ms 1 11 Binary input filter time 5 FilterTime5 2 5-30000 1ms 1 12 Binary input filter time 6 FilterTime6 2 5-30000 1ms 1 13 Binary input filter time 7 FilterTime7 2 5-30000 1ms 1 14 Binary input filter time 8 FilterTime8 2 5-30000 1ms 1 15 Binary input filter time 9 FilterTime9 2 5-30000 1ms 1 16 Binary input filter time 10 FilterTime10 2 5-30000 1ms 1 17 Binary input filter time 11 FilterTime11 2 5-30000 1ms 1 18 Binary input filter time 12 FilterTime12 2 5-30000 1ms 1 19 Binary input filter time 13 FilterTime13 2 5-30000 1ms 1 20 Binary input filter time 14 FilterTime14 2 5-30000 1ms 1 21 Binary input filter time 15 FilterTime15 2 5-30000 1ms 1 22 Binary input filter time 16 FilterTime16 2 5-30000 1ms 1 23 Binary input filter time 17 FilterTime17 2 5-30000 1ms 1 24 Binary input filter time 18 FilterTime18 2 5-30000 1ms 1 25 Binary input filter time 19 FilterTime19 2 5-30000 1ms 1 26 Binary input filter time 20 FilterTime20 2 5-30000 1ms 1 27 Binary input filter time 21 FilterTime21 2 5-30000 1ms 1

28 Dual-binary input setting YXATTRIB 2 0、3、C、F、30、3C、3F ------ 1

29 Dual-binary input setting YXATTRIB1 2 0 ------ 1 30 Binary input 1 use YX1Use 2 Generic BI --- 1 31 Binary input 2 use YX2Use 2 Generic BI --- 1 32 Binary input 3 use YX3Use 2 Generic BI --- 1 33 Binary input 4 use YX4Use 2 Generic BI --- 1 34 Binary input 5 use YX5Use 2 Generic BI --- 1 35 Binary input 6 use YX6Use 2 Generic BI --- 1

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36 Binary input 7 use YX7Use 2 ---- --- 1 0x5555：Generic BI;0xAAAA：Local status, Active with High Voltage；0x9999：Local status, Active with Low Voltage；

37 Binary input 8 use YX8Use 2 ---- --- 1 0x5555: Generic BI:;0xAAAA: External trip 1, Active with High Voltage; 0x9999: External trip 1: Active with Low Voltage;

38 Binary input 9 use YX9Use 2 ---- --- 1 0x5555: Generic BI; 0xAAAA: External trip 2, Active with High Voltage; 0x9999: External trip 2: Active with Low Voltage;

39 Binary input 10 use YX10Use 2 ---- --- 1 0x5555: Generic BI:;0xAAAA: External trip 3, Active with High Voltage; 0x9999: External trip 3: Active with Low Voltage;

40 Binary input 11 use YX11Use 2 ---- --- 1 0x5555: Generic BI;0xAAAA: External trip 4, Active with High Voltage; 0x9999: External trip 4: Active with Low Voltage;

41 Binary input 12 use YX12Use 2 ---- --- 1

0x5555: Generic BI; 0xAAAA: Thermal content zero clearing, Active with High Voltage; 0x9999: Thermal content zero clearing, Active with Low Voltage;

42 Binary input 13 use YX13Use 2 ---- --- 1

0x5555: Generic BI; 0xAAAA: External block under-voltage protection, Active with High Voltage; 0x9999: External block under-voltage protection, Active with Low Voltage;

43 Binary input 14 use YX14Use 2 ---- --- 1 0x5555: Generic BI; 0xAAAA: Test mode, Active with High Voltage; 0x9999: Test mode, Active with Low Voltage;

44 Binary input 15 use YX15Use 2 Generic BI --- 1 45 Binary input 16 use YX16Use 2 Generic BI --- 1 46 Binary input 17 use YX17Use 2 Generic BI --- 1 47 Binary input 18 use YX18Use 2 Generic BIt --- 1 48 Binary input 19 use YX19Use 2 Generic BI --- 1 0x5555: Generic BI; 0xAAAA: External revert, Active with High Voltage; 0x9999: External revert, Active with Low Voltage;

49 Binary input 20 use YX20Use 2 ---- --- 1 Fixed to FAIL: Control Circuit, Active with High Voltage

50 Binary input 21 use YX21Use 2 ---- --- 1 Fixed to unexpected signal, Active with High Voltage

Energy parameter (number: 1) 51 Pulse width YMImpulseWidth 2 1-255ms 1ms 1

Output configuration (parameter number: 31) 52 Control open output pulse width YKTZCKMK 2 100-60000 1ms 1 53 Control close output pulse width YKHZCKMK 2 100-60000 1ms 1 Control close including remote close circuit breaker and remote check synchronization close

54 Remote open output YKTZCK 2 00…00-11…11 ------ 1 55 Remote close output YKHZCK 2 00…00-11…11 ------ 1

56 Binary output assigned to motor start_up over DJQDJSCK 2 00…00-11…11 ------ 1

57 Phase I>> output GL1DCK 2 00…00-11…11 ------ 1 58 Phase I> output GL2DCK 2 00…00-11…11 ------ 1 59 Zero sequence I>> output LXGL1DCK 2 00…00-11…11 ------ 1 60 Zero sequence I> output LXGL2DCK 2 00…00-11…11 ------ 1 61 Sensitive earth output XDLJDCK 2 00…00-11…11 ------ 1 62 Over voltage output GDYCK 2 00…00-11…11 ------ 1 63 Under voltage output DDYCK 2 00…00-11…11 ------ 1 64 Over-load stage I protection output GFH1DCK 2 00…00-11…11 ------ 1 65 Over-load stage II protection output GFH2DCK 2 00…00-11…11 ------ 1 66 Over-load inverse time limitted output GFHFSXCK 2 00…00-11…11 ------ 1 67 I2>> output FXGL1CK 2 00…00-11…11 ------ 1

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68 Negative sequence I> output FXGL2CK 2 00…00-11…11 ------ 1

69 Negative sequence inverse time limitted output FXFSXCK 2 00…00-11…11 ------ 1

70 Binary output assigned to external trip1 WBKRLTZ1CK 2 00…00-11…11 ------ 1 71 Binary output assigned to external trip2 WBKRLTZ2CK 2 00…00-11…11 ------ 1 72 Binary output assigned to external trip3 WBKRLTZ3CK 2 00…00-11…11 ------ 1 73 Binary output assigned to external trip4 WBKRLTZ4CK 2 00…00-11…11 ------ 1 74 Rotor-locked output ZZDZCK 2 00…00-11…11 ------ 1

75 Binary output assigned to long time start_up CQDCK 2 00…00-11…11 ------ 1

76 Binary output assigned to thermal overload stage block RGFHGJCK 2 00…00-11…11 ------ 1

77 Binary output assigned to thermal overload stage block RGFHBSCK 2 00…00-11…11 ------ 1

78 Binary output assigned to thermal overload stage trip RGFHDZCK 2 00…00-11…11 ------ 1

79 Binary output assigned to reverse interlocking FXLSCK 2 00…00-11…11 ------ 1

80 TV fault output TVDXCK 2 00…00-11…11 ------ 1 Connection (parameter number: 3)

81 System earth mode JDFS 2 5555/AAAA/9999 ------ 1 0x5555-5555-Isolated System; 0xAAAA-Compensated system; 0x9999-Direct earth

82 Polarity of TA IE/IEE XDLJDFX 2 5555/AAAA ------ 1 0x5555-Negative；0xAAAA-Positive；

83 3U0 Method LXDYXZ 2 CalculatedAAAA/Introduced5555 ------ 1

Clock Synchronization Mode (Parameter number: 1) 84 Clock synchronization mode selection TimeSyn 2 5555/AAAA ----- 1

0x5555: Clock Synchronization By Communication; 0xAAAA: Clock Synchronization By Communication + Pulse per minute; 0x9999: Clock Synchronization By IRIG-B code;

Failure information management (parameter number: 1) 85 Save Trip Log RecorderManager 2 No5555/YesAAAA ----- 1

Password information (parameter number: 6) 86 User password Password1 2 0-255 1 1 87 User password Password2 2 0-255 1 1 88 User password Password3 2 0-255 1 1 89 User password Password4 2 0-255 1 1 90 User password Password5 2 0-255 1 1 91 User password Password6 2 0-255 1 1

Protection function configuration (parameter number: 14)

92 Phase over-current protection configuration XGLBHPZ 2 ON/OFF ----- 1

93 Zero sequence over-current protection configuration LXGLBHPZ 2 ON/OFF ----- 1

94 Sensitive earth protection configuration XDLJDBHPZ 2 ON/OFF ----- 1 95 Over-voltage protection configuration GDYBHPZ 2 ON/OFF ----- 1 96 Under-voltage protection configuration DDYBHPZ 2 ON/OFF ----- 1 97 Over-load protection configuration GFHBHPZ 2 ON/OFF ----- 1 98 Negative sequence over-current protection FXGLBHPZ 2 ON/OFF ----- 1 99 External trip protection configuration WBKRTZBHPZ 2 ON/OFF ----- 1 100 Rotor-locked protection ZZDZBHPZ 2 ON/OFF ----- 1 101 Long time start_up protection CQDBHPZ 2 ON/OFF ----- 1

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102 Thermal overload protection RGFHBHPZ 2 ON/OFF ----- 1

103 Reverse interlocking protection configuration FXLSBHPZ 2 ON/OFF ----- 1

104 TV fault protection configuration TVDXBHPZ 2 ON/OFF ----- 1 Only the protection function is configured, the corresponding protection setting value menu can be available. If it's not configured, the protection program won't call corresponding protection program module when implement internal processing, and call initial function of each protection module.

Communication parameter (parameter number: 7) 105 RS485 address address 1 1-254 1 1 106 RS485A Baud rate RS485ABaund 1 2400-19200 ------ --------

107 RS485A Check mode RS485ACheckMode 1 No/Odd/Even parity ------ --------

108 RS485B Baud rate RS485BBaund 1 1200-19200 ------ -------- 109 RS485B Check mode RS485BheckMode 1 No/Odd/Even parity ------ -------- 110 RS485A logical channel RS485APZ 2 0-6 ----- 1 111 RS485B logical channel RS485BPZ 2 0-6 ----- 1

Ethernet communication parameter 112 Ethernet A port MAC address ------ 6 ---- ` ---- 113 Ethernet A port subnet mask ------ 4 ------ ------- ------ 114 Ethernet A port local IP address ------ 4 ------ ------- ------ 115 Ethernet A port number ------ 2 0-65535 1 116 Ethernet A port remote IP address 1 ------ 4 ------ ------- ------ 117 Ethernet A remote port number 1 ------ 1 0-65535 1 118 Ethernet A port remote IP address 2 ------ 4 ------ ------- ------ 119 Ethernet A remote port number 2 ------ 2 0-65535 1 120 Ethernet A port remote IP address 3 ------ 4 ------ ------- ------ 121 Ethernet A remote port number 3 ------ 2 0-65535 1 122 Ethernet A port remote IP address 4 ------ 4 ------ ------- ------ 123 Ethernet A remote port number 4 ------ 2 0-65535 1 124 Ethernet A port remote IP address 5 ------ 4 ------ ------- ------ 125 Ethernet A remote port number 5 ------ 2 0-65535 1 126 Ethernet A port remote IP address 6 ------ 4 ------ ------- ------ 127 Ethernet A remote port number 6 ------ 2 0-65535 1 128 Ethernet A port remote IP address 7 ------ 4 ------ ------- ------ 129 Ethernet A remote port number 7 ------ 2 0-65535 1 130 Ethernet A port remote IP address 8 ------ 4 ------ ------- ------ 131 Ethernet A remote port number 8 ------ 2 0-65535 1

132 Ethernet A port remote IP 1 logical channel ARemoteIPCh1 1 0-6 1








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140 Ethernet B port MAC address ------ 6 ---- ---- ---- ------

Ethernet C port MAC address 6

------

Energy parameter Interval of W(pulse) transmission DDZFZQ 1 1-255 1

Current active group Current active group ATAiveGroup 1 0x17-Ox1A（A-D） ----- 1

SetGroupA Phase over-current protection (parameter number: 8)

1 Phase I>> protection switch Setr[S12011] 2 ON/OFF ----- 1 2 Phase I> protection switch Setr[S12012] 2 ON/OFF ----- 1 3 I>> start_up value Setr[S1202] 2 0.05In～20.00In 0.01In 100 4 I>> start_up start value Setr[S12022] 2 0.05In～20.00In 0.01In 100 5 I>> time limitted Setr[S1203] 2 0.00s～99.99s 0.01s 100 6 I> start_up value Setr[S1204] 2 0.05In～20.00In 0.01In 100 7 I> start_up start value Setr[S12042] 2 0.05In～20.00In 0.01In 100 8 I> time limitted Setr[S1205] 2 0.00s～99.99s 0.01s 100

Zero sequence over-current protection (parameter number: 6) 9 Zero sequence I>> switch Setr[S13011] 2 ON/OFF ----- 1 10 Zero sequence I> switch Setr[S13012] 2 ON/OFF ----- 1 11 Zero sequence I>> start_up value Setr[S1302] 2 0.05I0n～20.00I0n 0.01I0n 100 12 Zero sequence I>> time limitted Setr[S1303] 2 0.00s～99.99s 0.01s 100 13 Zero sequence I> start_up value Setr[S1304] 2 0.05I0n～20.00I0n 0.01I0n 100 14 Zero sequence I> time limitted Setr[S1305] 2 0.00s～99.99s 0.01s 100

Sensitive earth protection (parameter number: 7) 15 Sensitive earth protection switch Setr[S3101] 2 Trip/Alarm/Off ----- 1

16 Criteria selection Setr[S3102] 2 5555/ AAAA ----- 1

5555-Zero voltage or zero current , AAAA- Zero voltage and zero current 17 Directional element switch Setr[S3103] 2 ON/OFF ----- 1 18 Zero sequence voltage start_up value Setr[S3110] 2 0.01～1.00Un 0.01Un 100 19 Zero sequence voltage start_up delay Setr[S3111] 2 0.00s～99.99s 0.01s 100 20 Zero-sequence current start_up value Setr[S3117] 2 0.005A～1.200A 0.001A 1000 21 Sensitive earth operation time limitted Setr[S3118] 2 0.00s～99.99s 0.01s 100

Over-voltage protection (parameter number: 4) 22 Over-voltage protection switch Setr[S5001] 2 ON/OFF ----- ----- 23 Over voltage start_up value Setr[S5003] 2 1.00-1.50Un 0.01Hz 100 24 Over voltage time limitted Setr[S5004] 2 0.00s-99.99s 0.01s 100 25 CB open block Setr[S5007] 2 ON/OFF ----- -----

Under voltage protection (parameter number: 5) 26 Under voltage protection switch Setr[S5101] 2 ON/OFF ----- ----- 27 Under-voltage protection start_up value Setr[S5103] 2 0.05Un～1.00Un 0.01In 100 28 Under-voltage protection time limitted Setr[S5106] 2 0.00s～99.99s 0.01s 100 29 TV fault block under-voltage protection Setr[S5120] 2 ON/OFF ----- ----- 30 CB open block Setr[S5121] 2 ON/OFF ----- -----

Over-load protection (parameter number: 7)

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31 Over-load stage I switch Setr[S4201] 2 ON/OFF ----- 1 32 Over-load stage Ⅱ switch Setr[S42013] 2 ON/OFF ----- 1

33 Over-load inverse time limitted stage switch Setr[S42012] 2 ON/OFF ----- 1

34 Over-load stage Ⅰ start_up value Setr[S4202] 2 0.05In～20.00In 0.01In 100 35 Over-load stage I time limitted Setr[S4203] 2 0.00s～99.99s 0.01s 100 36 Over-load stage Ⅱ start_up value Setr[S4204] 2 0.05In～20.00In 0.01In 100 37 Over-load stage Ⅱ time limitted Setr[S4205] 2 0.00s～99.99s 0.01s 100 38 Over-load inverse time limitted curve Setr[S42060] 2 0-3 1 1

0-Normal inverse time limitted, 1-Abnormal inverse time limitted, 2-Extreme inverse time limitted, 3-Long time inverse time limitted

39 Over-load inverse time limitted start_up value Setr[S4206] 2 0.05In～20.00In 0.01In 100

40 Over-load inverse time limitted time constant Setr[S4207] 2 0.00s～99.99s 0.01s 100

Negative sequence over-current protection (parameter number: 10) 41 I2>> protection switch Setr[S40011] 2 ON/OFF ----- 42 Negative sequence I> protection switch Setr[S40012] 2 ON/OFF -----

43 Negative sequence over-current inverse time limitted stage switch Setr[S40013] 2 ON/OFF ----- -----

44 I2>> start_up value Setr[S4002] 2 0.05In-20.00In 0.01In 100 45 I2>> time limitted Setr[S4003] 2 0.00s-99.99s 0.01s 100 46 I2> start_up value Setr[S4004] 2 0.05In-20.00In 0.01In 100 47 I2> time limitted Setr[S4005] 2 0.00s-99.99s 0.01s 100

48 Negative sequence inverse time limitted curve selection Setr[S4006] 2 0-3 1 1

0-Normal inverse time limitted, 1-Abnormal inverse time limitted, 2-Extreme inverse time limitted, 3-Long time inverse time limitted

49 Negative sequence inverse time limitted start_up value Setr[S4008] 2 0.05In-20.00In 0.01In 100

50 Negative sequence inverse time limitted time constant Setr[S4009] 2 0.00s-99.99s 0.01s 100

External trip protection (parameter number: 8) 51 External trip protection 1 switch Setr[S3001] 2 ON/OFF ----- 1 52 External trip protection 1 time limitted Setr[S3002] 2 0.00s～99.99s 0.01s 100 53 External trip protection 2 switch Setr[S3011] 2 ON/OFF ----- 1 54 External trip protection 2 time limitted Setr[S3012] 2 0.00s～99.99s 0.01s 100 55 External trip protection 3 switch Setr[S3021] 2 ON/OFF ----- 1 56 External trip protection 3 time limitted Setr[S3022] 2 0.00s～99.99s 0.01s 100 57 External trip protection 4 switch Setr[S3031] 2 ON/OFF ----- 1 58 External trip protection 4 time limitted Setr[S3032] 2 0.00s～99.99s 0.01s 100

Rotor-locked protection (parameter number: 3) 59 Rotor-locked protection switch Setr[S4101] 2 ON/OFF ----- 1 60 Rotor-locked current start_up value Setr[S4102] 2 0.05In-20.00In 0.01In 100 61 Allowable rotor-locked time Setr[S4103] 2 0.00s～99.99s 0.01s 100

over start_up time protection (parameter number: 1) 62 over start_up time protection Setr[S4501] 2 ON/OFF ----- 1

Thermal over-load protection (parameter number: 6) 63 Thermal over-load protection switch Setr[S4401] 2 ON/OFF ----- 1 64 Thermal over-load pickup current Setr[S4402] 2 0.05In-20.00In 0.01In 100 65 Thermal over-load time constant Setr[S4403] 2 60s～3000s 1s 1 66 Thermal over-load alarm stage Setr[S4404] 2 0.50-0.99 0.01 1 67 Thermal over-load block stage Setr[S4414] 2 0.50-0.99 0.01 1

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68 Negative sequence current effect coefficient Setr[S4416] 2 3.00-10.00 0.01 1

Reverse interlocking output (parameter number: 1) 69 Reverse interlocking output switch Setr[S4301] 2 ON/OFF ----- 1

TV fault check (parameter number: 2) 70 TV fault check switch Setr[S5301] 2 ON/OFF ----- 1 71 TV fault check delay Setr[S5302] 2 0.00s～99.99s 0.01s 100

Note: 1 The system parameter is primarily composed of two parts, one part is in the DSP board which is related

with protection board; the other part is in MMI, which is related with man-machine operation and communication management; in the system parameter table, item 0 to 111 are stored in DSP board, item after 111 are stored in MMI board;

2 The significance of protection configuration has been stressed by previous protection principle, it's necessary to note the necessity of correct configuration and safety problem for modifying configuration in operation.

3 "TA Secondary Rated Value" can select 5A or 1A, the calibration of this parameter should conform to the TA/TV plate of device; moreover, the calibration of this parameter directly impacts on judgment of protection, so the calibration must be correct;

4 The method for output calibration is as follows: In the "Parameter Setting -> System Parameter -> Output Configuration" menu of MMI, there is one 13-bit binary number under each protection or auto-control function name as Figure 21:

Figure 21 Example for protection output configuration

The lowest order is corresponding to output 1, the highest order is corresponding to output 7; if the corresponding bit is set for 1, this output will be related with current protection, when protection operates, this output will operate; on the contrary, if the corresponding bit is set for 0, this output won't be related with current protection. The device is equipped with 7 relays, the first 6 are non-keeping binary outputs, they will return if protection returns; the 7th relay is the twin coil signal-keeping relay, which manual revert is required after operation. Towards the condition that the protection soft plate is "Trip/Alarm/Off", if it's switched to "Alarm", the binary output related with it won't be driven when protection operates, only the alarm relay will be driven according to condition of output; if it's switched to "Trip", the binary output, alarm relay will be driven according to output condition in operation.

5 "Binary Input Filter Time": Part binary input of device will be probably related with protection or auto-control function, the change time of corresponding related signal condition will include filter time, so the binary input filter time must be calibrated correctly.

6 Save trip log: "Yes" should be selected in normal operation, "No" can only be selected when test is implemented and the previous fault report will be saved, accordingly, the previous one won't be overwritten.

7 "Remote IP": One IP list of physical port remote host computer is offered, each port is maximally 8 groups, the device allows the data to be transmitted to remote host computer IP in the list, the IP which isn't used can be set for 0.0.0.0;

8 Physical channel and logic channel: In order for device to be suitable for various net construction conditions of communication system, the physical channel must be separated with logic channel. The physical channel indicates the practical physical connection channel such as RS485A, RS485B, Ethernet A, Ethernet B and

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Ethernet C and so on; these physical channels have some relevant setting, for instance, RS485 net has settings of baud rate, start bit, data bit, stop bit and check bit and so on; the Ethernet has settings of MAC address, IP address and port number and so on; the logical channel is put forward considering transmission and processing mode of information in the communication system. In order to handle errors from operation of channel and host computer and enhance the reliability of communication system, the system adopts redundant configuration generally. In general, one communication system has two or more communication channels or redundant standby; considering simplification of data processing, one channel is the main one in operation, the others are thermal standby channel, when the main channel has failure, it'll be switched from host computer to redundant channel. Accordingly, towards the first level data which is transmitted semi-automatically, the same data in the same communication system can't be transmitted repeatedly when the channel is switched. The logical channel conception can be adopted to solve this problem, which distributes same logical channel to the redundant communication system of main standby computer, and the corresponding first level data has the same de-queue pointer. When any host computer of system requests first level data to device, the de-queue pointer of this logical channel will add one.

9 "Logical Channel for Remote IP": If the role property of remote host computer is same, it can be set for the same logical channel number, for instance: set the channel number of main front end processor and standby front end processor for 0, and set the channel number of protection supervisor for 1.

6 Operation method for man-machine interface system In order to convenient operation, the device is equipped with the man machine interface system (MMI)

which the function is strong and the operation is flexible. The front panel layout of device is as Figure 19:

6.1 Panel

LED indicatingLamp

LCD

Keyboard Local maintenance

Figure 19 Front panel layout of Equipment

6.2 Keyboard explanation The are 9 keys on the panel which are "", "", " ", " ", "＋", "－", "ENT", "ESC" and "RST". In general, "ENT" key is used to enter next menu or for affirmative selection; "ESC" is used to return

previous menu or for negative selection; "" and "" are used to move arrow cursor up and down to enter the sub-menu or move cursor to select data to be modified; " " and " " is used to move cursor to select certain bit of data to be modified, "＋" and "－" are used to modify the data on the line that cursor locates. "RST" is used to reset the "Operation" lamp on the reset panel and reset signal relay, and delete the password which has been input. In the main connection interface, the main menu can be entered by pressing ENT key.

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The system is equipped with auto-save function. In the menu of "System Parameter" and "Group X" (A-D), if some parameter or setting value is modified, when the previous menu is returned by pressing "ESC", the system can automatically display "Save Parameter/Setting Value?”. Press "ENT" to save modification and press "ESC" to cancel modification.

The system has information prompt function. When lots of information is displayed, multi-screen display is required, during the display course, if there is X/Y at the top right corner of LCD, it indicates that the information can be browsed in cycle via "", "" or "ENT"; X=1, current page is the first one, X=Y current page is the last one.

In order to prevent incorrect operation, one group of 6-digit user password is set in the device. When the password is required; the correct password must be input to acquire operation authority. If "Invalid Password" is displayed, "ESC" can be pressed to cancel the operation and return to the menu before inputting password. When "Invalid Password" is displayed, "ENT" can be pressed to continue to input password until it's correct or the error number is out of limit, the limit number is 3.The default password of system parameter modification and protection setting value is 6 "".

If "Operation is Failed" is displayed, "ESC" can be pressed to return main connection diagram.

6.3 Signal lamp and LCD explanation The panel is provided with 4 indicator lamps:

“RUN” lamp is green, during normal operation of the device, it flashes once a second; “FAIL” lamp is red, it is lighted when any failure is detected by the device during self check; “TRIP” lamp is red, it is lighted when the protection trips or recloses, till all protection actions return, and it will be off by pressing the “RESET” button; “ALARM” lamp is red, it is lighted when it detects system running failure, such as overload, TV circuit broken, sensitive earth alarm, etc. The device is provided with large LCD which displays in Chinese. The LCD is provided with

backlight. When there is no keyboard operation for a long time, the backlight will be automatically off, and the LCD will be off. Once there is keyboard operation, the backlight will be automatically on.

6.4 Serial interface The maintenance port on the device panel is one DB9 socket, which the definition is as follows:

Table 18 Definition for maintenance port plug-hole

Plug-hole number Definition 2 RXD 3 TXD 5 GND

Connect the device with PC via one communication cable as Figure 20, maintenance can be implemented towards device with software NCP Manager, and the communication rate of maintenance port is 38400BPS.

接装置接PC机Connect PCConnect to device

Figure 20 Connection sketch map of PC and maintenance port

6.5 Menu structure The command menu adopts the tree directory structure as follows:

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Figure 21 Menu tree directory structure diagram

6.6 Function introduction 6.6.1 System parameter

The menu is primarily used to display and modify some parameters of system. TATV parameter: Used to set the parameter of power system primary TA such as phase TA primary rated

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value, phase TA secondary rated value, zero sequence TA primary rated value, zero sequence secondary rated value as well as parameter to set power system primary TV such as primary TV rated line voltage, motor rated current and motor start-up time.

Earth mode: Used to set earth mode of primary system, zero sequence TA and selection of zero sequence voltage.

Protection configuration: Used to configure protection function, open and close each protection function block. The closed protection function is unavailable in the setting value menu, and the setting item related with closed protection function in the output configuration is also unavailable.

Output configuration: Binary output of protection function which has been opened by configuration. Binary input configuration: Configure single and double position, binary input filter time and set binary

input related with protection function. Energy parameter: Used for energy zero clearing, set parameters such as base of pulse energy, pulse width

and interval of W(pulse) transmission. Communication parameter: Used to set parameters required by various communication modes offered by

device such as device address, RS485, baud rate of maintenance communication port, Ethernet relevant parameter as well as logical channel corresponding to each physical channel.

System time: Used to display time and local clock synchronization and set clock synchronization mode. Save report: Used to set whether to save incident report. Modification password: Used to modify user password. Save & exit: Save modification towards system parameter.

6.6.2 Protection setting value This menu can complete operation such as browse, modify, copy of group and switch of group.

6.6.3 Measurement value This menu can display each measurement and calculation value in real time. It can display motor terminal

measuring current (IA, IB and IC), phase voltage (UA, UB and UC), active power (P), reactive power (Q), power factor (COSφ), system frequency (F), line voltage (UAB, UBC and UCA), motor terminal protection current (Ia, Ib and Ic), zero-sequence current (3I0), positive-sequence current (I1), negative sequence voltage (U2) and zero sequence voltage (3U0) and so on. The phase angle displayed in this menu is based on UA, the phase angle of UA is 0, and the angle range advancing UA is [0,180] and [180,360] when lagging. 6.6.4 Binary input status

The binary input status is used to display all switch-in status of device in real time, YX01-YX19 is corresponding to external same number binary input, YX20-YX21 is the internal switch-in value, and YX01-YX06 can be set for double binary input. The definition of all switch-in values are as Table 19:

Table 19 Definition table of switch-in value Binary input serial number Meaning

01 Break Auxiliary Connector Normally Open 02 Break Auxiliary Connector Normally Close 03 Disconnector OFF Position 04 Disconnector ON Position 05 Earth Switch Position 06 Generic BI 07 Generic BI/Control Authority Remote/local

08-11 Generic BI/external trip 1-4 (Active with Low Voltage/Active with High Voltage)

12 Generic BI/thermal content zero clearing revert (Active with Low Voltage/Active with High Voltage)

13 Generic BI/external block under voltage (Active with Low Voltage/Active with High Voltage) 14 Generic BI/device test status (Active with Low Voltage/Active with High Voltage)

15-18 Generic BI 19 Generic BI/ BI for Reverting Device (Active with Low Voltage/Active with High Voltage) 20 FAIL: Control Circuit (Active with High Voltage) 21 Unexpected Curcuit Breaker Position l (Active wit High Voltage)

Note: 1. Towards binary input 1 to 5, it's recommended for switch-in according to definition in the figure, and the binary input 2 must be switched in breaker open;

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2. The binary input 7 is defined as "Generic BI/local status (Active with Low Voltage/Active with High Voltage)", which indicates binary input 7 can be as common binary input, the use of binary input 7 should be set for "Common Binary Input"; it can also be used for switch-in local status: if the use of binary input 7 is "Local status active with low voltage", when the external input of binary input 7 is high level, the local status occurs, at the same time, modify setting value of block remote control breaker, sensitive earth fault trip try, remote control synchronization, remote control switch soft plate and remote; when the input is low level, the local status is eliminated, the function above isn't no longer blocked; if the use of binary input 7 is set for "Local status active with high voltage", the condition will be contrary. The use of binary input is set in the "Parameter Setting -> System Parameter -> Binary Input Setting" menu of device MMI.

3. The binary input 8-11 can be both used for Generic BI and external trip signal switch-in. 4. The binary input 12 can be both used for Generic BI and thermal content zero clearing signal switch-in; 5. The binary input 13 can be both used for Generic BI and external block under voltage signal switch-in; 6. The binary input 14 can be both used for Generic BI and debugging status signal switch-in; when the

debugging status signal occurs, all the event of category one won't be transmitted; 7. The binary input 19 can be both used for Generic BI and device external revert signal switch-in;8. The binary input 20 and 21 are the signals directly switched in binary input part from operation circuit in

device, which are broken control circuit and unexpected signal. 6.6.5 Protection soft plate

The protection soft plate status is displayed in real time in the interface. 6.6.6 Event log

The incident report records specific information of each event change according to time sequence such as failure record found by device self-check, process record of trip or alarm, 256 latest information can be recorded, the 000 is the latest information, the 001 is the sub-latest information, the rest may be deduced by analogy, which can be browsed by "" and "". 6.6.7 Fault report

The menu can browse latest several whole failure records, including failure process and effective value in start_up. It’s divided into failure briefing and operation sequence. 6.6.8 Operation record

Record various operation behaviors from various methods (including primary unit, maintenance port and keyboard etc.) to device, for instance, modify setting value and system parameter, switch setting value, test binary output, channel coefficient calibration, remote record of primary unit and so on; 256 latest operation records can be recorded, the 000 is latest information, the 001 is the sub-latest information, the rest may be deduced by analogy, it can be browsed by "" and "". 6.6.9 Test Binary Output

This menu is used to test completeness of each output circuit. Note: This test will probably transmit breaker, please take cautions.

6.6.10 Calibration coefficient The coefficient of sampling channel can be calibrated manually and automatically, which can optimize the

entirety of sampling system. Note: The coefficient of device has been calibrated in the factory, don't do it again on the spot.

6.6.11 Communication status Display the status of each communication port of device in real time, it's normal with flicker.

6.6.12 Help information Operating instruction: This menu simply introduces operating method of device function and keyboard. Software parameter: Used to display the version number and check code of monitoring software and

protection software.

6.7 Operating instruction 6.7.1 Main connection diagram

After the device is powered on, LCD will display the main connection diagram of system and relevant information when it operates normally (as Figure 22). In the main connection diagram, the status of breaker, switch (hand cart) and earth tool can be displayed in real time. This main connection diagram can be installed in the device via local maintenance port when debugging.

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Figure 22 Main connection diagram of device

6.7.2 Main menu In the main connection diagram interface, enter "ENT" to enter main menu, press "" and "" to move

" " cursor to select sub-menu, press "ENT" to enter corresponding sub-menu, and press "ESC" to return main connection diagram. 6.7.3 System parameter Select "System Parameter" in "Parameter Setting", press "ENT" to enter "System Parameter" interface (as Figure 23). The function sub-items of system parameter can be entered with the same method.

Output configuration: The parameter is displayed as binary sequence, output 1 to 6 is corresponded from right to left, "1" is checked, and “0" is unchecked.

Energy parameter: When setting pulse energy base, after the pulse energy base is modified, the "Pulse Energy Value" must be set for "Yes", press cancel key to return "System Parameter" interface and it'll be effective after saving it; if you want to cancel this modification, the operation of setting pulse energy base can be terminated through pressing "ESC" to exit "System Parameter" interface, the integration energy clear operation is similar.

System time: When edit mode isn't entered in this interface, it'll only display current time and won't display the reverse cursor. Press "＋" or "－", enter edit mode after inputting password, and the time and clock synchronization mode can be modified; after modifying the time and pressing "ENT" to give clock synchronization command, if it displays "Adjust time successfully!", the system will be the modified one. The save to modification of synchronization is same as other system parameters.

Modify password: The default password is 6 "", and 6 key-press password must be set when it's changed, "RST", "ESC" and "ENT" can be as password. If the password is modified successfully, the new password will be

effective immediately; when the password is required later, the new password must be input.

System parameter ============= TATV parameter

Connection Protection configuration

Output configuration Binary input configuration

Energy parameter Communication parameter

System Time Save report

Modify password Save parameter

Figure 23 System parameter menu

Modify other parameters, enter corresponding parameter menu, use "" and "" to move reverse cursor to select required data, then use "" and "" to move cursor to select certain digit of required data, then use "＋" and "－" to modify the data that the cursor locates.

After modifying the system parameter, it can exit through selecting "Save Parameter" and pressing "ENT"; input the correct password and press "ENT", the system will return the main menu after saving all modified system parameters. It can return the main menu via "ESC", if the parameter is modified, the system will display "Save Parameter?". Use "ENT" to save it; if it's not saved, press "ESC" to return the main menu.

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6.7.4 Protection setting value After entering "Protection Setting Value" from "Parameter Setting", the

effective group number will be displayed first, the cursor locates at the group entry of current effective group (as Figure 24)

Use "" and "" to move cursor to select various operations. In the "Chang Group" and "Copy Group", press "＋" and "－" to select object group (A－D), then press "ENT". If the operation fails, "Operation is Failed" will be displayed. If the operation is successful, the interface will directly return the menu of "Protection Setting Value”. In each setting value menu, implement block organization based on function. The interface of group is as Figure 25, press "" and "" to move cursor to select various setting values of function. "X/Y" is displayed at the top right corner of

LCD, if X isn't equal to Y, it indicates that there is setting value of next screen; "" can be used to move cursor to the last line and turn the screen; moreover, fast turning screen can be implemented via "ENT" key. If the authority to modify current function setting value isn't acquired, when the setting value is modified by key, the system will display inputting password, the setting value can be only modified by inputting correct password, and the authority will be effective in the whole group.

Protection setting value ============= Effective group: A

Change group Copy group

Group A Group B Group C Group D

Figure 24 Protection setting value menu

Figure 25 Protection group menu

When the setting value is modified, the system will dynamically implement boundary detection, once the value exceeds the scope, the system will keep the original value; see "Setting Value List" for scope. 6.7.5 Debugging tool

Test Binary Output: Use "" and "" to select output circuit, after correct password is input, the system will inquire "Confirm Test Binary", press "ENT" to implement it, use "ESC" to cancel test binary towards current output. After test binary is confirmed, the corresponding binary output will operate for short time, and then return automatically.

Note: This test will probably operate switch, please take care. Coefficient adjustment: Auto-adjustment and manual adjustment, before auto-adjustment is implemented, the

precise signal source must be connected to the device according to requirements, after pressing "ENT" to input correct password, the system will automatically calibrate the coefficient. Manual adjustment is primarily used to calibrate the coefficient of single channel, these two functions are primarily used for in-plant debugging, and they are prohibited on the spot. 6.7.6 Measurement value

Measurement value: It's divided into "Primary Measurement Value" and "Secondary Measurement Value", which respectively have multi-screen information; the screen can be turned in cycle with "" and "". The information will be updated per second. For the convenience of browsing measurement value, in the main connection interface, the "Primary measurement value" interface can be directly entered by continually pressing "ENT". The main menu can be returned by continually pressing "ESC" keys. 6.7.7 History record

Event log: Display the information of binary input change and event message of log according to time sequence, use "" and "" to turn the screen in cycle to browse all information.

Fault log: In this menu, select log classification "Fault Briefing" or "Operation Sequence" of log, "Fault Briefing" displays fault type and values of analog quantity in fault operation; "Operation Sequence" is the start_up information with absolute time scale and process information with relative time scale. First, input the serial number of fault log to be browsed, 0 is the latest log, 1 is the sub-latest log, the rest may be deduced by analogy. Press "ENT" to display current fault message, use "" and "" to turn the screen, displaying all the process information.

6.7.8 Help information. Software parameter: This function is primarily used for management of software. After entering this menu,

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the device model, the version and check code of running program in 2 CPU can be browsed.When the device implements maintenance or reserve parts & spare parts are purchased, this item of parameter must be offered. 6.7.9 Input password

When the operation authority is required, the system will display inputting password. Take saving system parameter for example, when saving system parameter is confirmed, the password will be required; press "ENT" after inputting password, if it's correct, the device will automatically return the previous menu, namely main menu; if the password is wrong, the system will display "Invalid Password", the password can be continually input after pressing "ENT" until 3 times. When the password is input wrongly for 3 times, the system will automatically return the current menu. During the course of inputting password, press "ESC" to cancel current operation, press "RST" to delete input password. 6.7.10 Display of operation fail

When the system parameter and setting value is saved, if the system displays "Writing is failed" or "Reading is failed", "ESC" or "ENT" can be pressed for confirmation to enter normal menu; when resetting device and testing binary output, if the system displays "Operation is failed", the operation above can also be implemented for confirmation. The reason for this phenomenon is: the parameter or setting value is out of limit, the device internal communication is abnormal (lamp will be on when device is abnormal) and so on. 6.7.11 Protection trip automatically displays event log interface

If new event occurs (protection trip event) during the device operation, the device will automatically switch on LCD and display recent two events. It's necessary to manually confirm that the menu is returned to main connection diagram, which continually presses "ESC" after browsing information. Within 10s of pressing key for the last time, the function of displaying event log interface is prohibited.

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7 Debugging outline

7.1 Cautions for debugging a) Please read this test program and relevant specification carefully before test. b) Don't plug the device module frequently, don't tough the module circuit and chip, don't plug the module

with power on. c) The electric iron and oscillograph must be earthed with screen cabinet. d) Before the test, it should check whether the screen cabinet and device are damaged or the screws are

loosened, especially for the screw and connection plate of TA circuit. They can't be loosened. e) Collate the program check code and version number.

7.2 Check before device is powered on a) Appearance and connection check It primarily checks whether the appearance of protection device is damaged, whether the label parameter,

mark and connection meet requirements of drawing design, whether the terminal is loosened and the technology of device.

b) Check whether the nominal parameter of power supply plug-in and exchange plug-in, the open current and close current of relay plug-in meet the requirements of practical system.

c) Hardware jumper check d) Implement setting and check towards hardware according to calibration requirements.

7.3 Insulation check Parallel each terminal of device (communication terminal can be without insulation test), use 500V

magneto-ohmmeter to measure insulation according to plug-in, the insulation resistance shouldn't be greater than 20M.

7.4 Power-on check The power-on preliminary test indicates whether each part of device operates normally after it's powered on.

It primarily includes power-on self-test of device, check of keyboard, check of software version and program check code as well as clock calibration and check. Input the setting value to corresponding setting value zone according to setting value sheet, then change the setting value zone into operation setting value zone.

7.5 Sampling precision check Enter the "Secondary Measurement Value" of real-time information menu, apply rated voltage and current on

the terminal of protection screen, the sampling value on the LCD should be equal to the practical one, and the error should be less than ±2％.

7.6 Binary input check Enter the "Binary Input Status" sub-menu of real-time information menu, apply energizing quantity on the

binary input end of device; check the connection of each input circuit, the binary input status on the LCD should be changed accordingly.

7.7 Relay contact check The relay contact check can also be implemented via "Test Binary Output" of device. It can operate each way

output relay. See menu operation explanation for operation method. If the device is equipped with open output, the close circuit monitoring should implement primary close trip and open trip with simulation breaker, and confirm whether the breaker operates correctly.

7.8 Setting value check The protection function and operation logic of device has implemented dynamic simulation test, type test and

other test for many times. The spot debugging only requires check and setting value.

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7.9 Open & close current maintaining test Connect the operation circuit of device with simulation breaker; check whether the open & close current and

position relay operate correctly.

7.10 See NSP783 Motor Protection Monitoring Unit Test Report for protection & monitoring function test items.

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8 Operation explanation of device

8.1 Normal operation status of device When device operates normally, the "Operation" lamp should be on and off with rhythm, and all the alarm

instruction lamps should be off. If interruption occurs between MMICPU and protection CPU, and the self-check of device has error, the abnormal lamp is on; after open or re-closing operation, the operation lamp is on; when TV fault, sensitive earth or over load occur, the alarm lamp is on. Only when the communication between MMICPU and protection CPU is normal, all the abnormal, operation and alarm indicating lamps can be reset by pressing "RST".

8.2 Device abnormal information meaning and solution suggestion Table 20 Device abnormal information

Fault message number Chinese description Solution

128 Fail: Set System Parameter Check whether the parameter is out of limit, re-modify it, if it's still failed, inform the manufacturer

130 Fail: Set Protection Setting Check whether the setting value is out of limit, re-modify it, if it's still failed, inform the manufacturer

131 A/D Convert Check Error Inform manufacturer 132 Protection Setting Check Error Inform manufacturer

137 Fail: Copy Set Group Check whether the setting value in source group is out of limit, re-copy it, if it's still failed, inform manufacturer

138 Fail: Change Set Group Check whether the setting value in object group is out of limit, re-change it, if it's still failed, inform manufacturer

177 Fail battery Inform manufacturer

8.3 Cautions for installation a) The protection cabinet must be earthed; the earth copper bar must be equipped and connected to earth

screen of power plant. b) If possible, it should adopt shielded cable, the shielding layer is earthed at switch yard and control room,

the current line of each phase and neutral line should be set within the same cable. c) The secondary circuit of current transformer is only earthed in the protection cabinet. d) The earth A23, A24 on TV/TA plug-in, earth E18 on X28 power panel and cabinet must be earthed.

8.4 Example for fault message The whole trip message covers the following a) Trip sequence:

Take over-current stage I for example, the whole event log is as follows: 2005-8-30 11:16:57.390 Increment of Current Ph LA PU Delay 0ms Increase of current Ph LB PU Delay 31ms A-phase over-current amplitude value start_up occurrence Delay 31ms I>> amplitude value start_up occurrence Delay 36ms B-phase over current amplitude value start_up occurrence Delay 501ms I>> trip occurrence Delay 527ms Increase of current Ph LC PU Delay 814ms B-phase over-current amplitude value start_up elimination Delay 815ms I>> trip elimination Delay 815ms I>> amplitude value start_up elimination Delay 815ms A-phase over-current amplitude value start_up elimination Delay 2000ms Elimination of increase of current Ph LA PU Delay 2000ms Elimination of increase of current Ph LB PU Delay 2527ms Elimination of increase of current Ph LC PU

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b) Fault briefing, current and voltage value when device trips: 2005-8-30 11:16:58.072 I>> trip occurrence Effective value Ia ＝12.44A Ib ＝09.93A Ic ＝ 03.00A 3Io＝ 00.00A Uab＝21.90V Ubc＝90.12V Uca＝85.09V 3Uo＝00.02V

c) Wave shape of fault record compatible to COMTRADE. Device adopts continual fault record mode, and each cycle records 16 points. According to the speed of fault occurrence and elimination, the time of each fault record will be lengthened, the maximal time is 5 second (fault record includes three-cycle sampling points before start_up).The device total of fault records shouldn't be less than 5. The example of each channel wave curve is as Figure 26:

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Ia

0

5

0

-5

-10

I/A

250 500 750 1000t/ms

Ib

0

5

0

-5

-10

I/A

250 500 750 1000t/ms

Ic

0

5

0

-5

-10

I/A

250 500 750 1000t/ms

Ua

0

50

0

-50

-100

U/V

250 500 750 1000t/ms

Ub

0

50

0

-50

-100

U/V

250 500 750 1000t/ms

Uc

0

50

0

-50

-100

U/V

250 500 750 1000t/ms

Uab

0

50

0

-50

-100

U/V

250 500 750 1000t/ms

Ubc

0

50

0

-50

-100

U/V

250 500 750 1000t/ms

Uca

0

50

0

-50

-100

U/V

250 500 750 1000t/ms

Figure 26 Wave diagram of each channel

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8.5 Protection event message list In the communication protocol, the event message number is one word, which is transmitted according to

lower byte and high byte sequence after it's changed into hex. When the partner software of front end processor communication program is set, the function number fills in event message number lower byte, the message number fills in corresponding event message number high byte (decimal digit is listed in the table below).

Event information number Function number Information number Chinese description 68 68 0 Clock synchronization error

0128 0128 0 FAIL: Set System Parameter 0130 130 0 FAIL: Set Protection Setting 0131 0131 0 A/D Convert Check Error 0132 132 0 Protection Setting Check Error 0136 136 0 Abnormal communication of DSP and MMI 0137 137 0 FAIL: Copy SetGroup 0138 138 0 FAIL: Change SetGroup 0139 139 0 Fail: NVRAM read and write 0141 141 0 NVRAM fail non-volatility 177 177 0 Fail battery 920 152 3 Wp(pulse) Overflow 921 153 3 Wq(pulse) Overflow 924 156 3 WpForward Overflow 925 157 3 WqForward Overflow 928 160 3 WpReverse Overflow 929 161 3 WqReverse Overflow 1215 191 4 Ue>/3U0 Pickup 1226 202 4 Sens E TRIP 1521 241 5 Over-load stage I operation

15211 107 59 Over-load stage II operation 15212 108 59 Over-load inverse time limitted operation 1805 13 7 I> operation 1815 23 7 I>> operation 1833 41 7 Zero current stage 2 operation 1836 44 7 Zero current stage 1 operation 2000 208 7 over start_up time trip 2503 199 9 Thermal over Load clear 2515 211 9 Thermal Over Load Alarm 2520 216 9 Thermal Over Load Block 2521 217 9 Thermal Over Load Trip

41366 150 161 Trip general signal (self-keeping signal, revert is required)

4315 219 16 Reverse interlocking 4537 185 17 External Trip 1 4557 205 17 External Trip 2 4557 225 17 External Trip 3 4591 245 17 External Trip 4 5171 51 20 I2>> TRIP 5172 52 20 I2> TRIP 5173 53 20 I2p> TRIP 6539 139 25 Under voltage trip 6570 170 25 Over voltage trip

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6821 165 26 Rotor-Locked Trip 6675 19 26 TV Fault 6677 21 26 TA Fault

8.6 Remote table Corresponding virtual binary input Remote control

number Corresponding operation Function Information

number Event information

number FE/FF Breaker close/open ------ ------ ------ FE/FE Sensitive Earth Fault Trip Try ------ --- ------

………… Keep and not use FE/EF Phase I>> protection switch 103 68 17511 FE/EE Phase I> protection switch 104 68 17512 FE/ED Negative sequence I >> protection switch 153 68 17561 FE/EC Negative sequence I> protection switch 154 68 17562 FE/EB Over-voltage protection switch 165 25 6555 FE/EA Under voltage protection switch 130 25 6530 FE/E9 Thermal over-load protection switch 207 9 2511 FE/E8 Rotor-locked protection switch 155 26 6811 FE/E7 Long time start_up protection 209 20 5211 FE/E6 Time limitted I2>> switch 55 201 51511 FE/E5 Time limitted negative sequence I>> switch 56 201 51512 FE/E4 Inverse time limitted negative sequence over-current switch 57 201 51513 FE/E3 External trip 1 switch 179 17 4531 FE/E2 External trip 2 switch 199 17 4551 FE/E1 External trip 3 switch 219 17 4571 FE/E0 External trip 4 switch 239 17 4591 FE/DF Sensitive earth protection switch 187 4 1211 FE/DE Over-load stage I protection switch 7 59 1511 FE/DD Over-load stage II protection switch 8 59 15112 FE/DC Over-load inverse time limitted stage protection switch 9 59 15113 FE/DB TV Fault switch 14 26 6670 FE/DA Reverse interlocking switch 204 16 4300

Note: 1 Protection function gives corresponding virtual binary input occurrence information when it's active, and gives corresponding virtual binary input elimination information when it's inactive; protection function switch-in is the one of protection configuration and corresponding soft plate, either one is inactive, the protection function is inactive; if certain protection configured close, the remote control can't switch in the soft plate in this block;

2 The virtual binary input corresponding to soft plate is transmitted with one frame in the general inquiry message, the hard binary input adopts the mode of transmitting one binary input with one frame;

3 When the remote control switch soft plate is used, towards the soft plate of "On/Alarm/Off" type, it must be calibrated o "Trip" and can't be calibrated to "Alarm".

9 Storage

The wrapped device should be stored in the manufactory and unit where the temperature is －25～40, the relative humidity is no greater than 80%, there is no acid, alkaline or other corrosive and explosive gas in the

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ambient air, and the rain and snow can be prevented.

10 Ordering instructions The following should be indicated: a) Product model, name and order quantity. b) AC current, voltage and frequency rated value. c) AC voltage rated value. d) Communication mode. e) Breaker open & close current. f) Specific function requirement and spare parts with special purpose. g) Supply address and time.

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Appendix 1 Terminal layout

NSP783(V3.0) terminal rear view

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Appendix 2 Terminal connection diagram

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Appendix 3 Cabinet structure and hole-opening dimensional drawing

Front view Side view Hole-opening dimensional drawing

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Appendix 4 Order number

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Content 1 INTRODUCTION .......................................................................................................................................................... 1

2 TECHNICAL PARAMETERS ..................................................................................................................................... 2

2.1 RATED PARAMETERS.................................................................................................................................................. 2 2.1.1 Rated DC voltage: 220V or 110V, allowable deviation -20%～+20%.................................................... 2 2.1.2 Rated AC data................................................................................................................................................ 2 2.1.3 Power consumption ....................................................................................................................................... 2 2.1.4 Binary quantity, pulse and GPS................................................................................................................... 2

2.2 MAIN TECHNICAL PERFORMANCE .............................................................................................................................. 2 2.2.1 Precise working scope and deviation is as Table 1.................................................................................. 2 2.2.2 Overload capacity .......................................................................................................................................... 2 2.2.3 Contact capacity ............................................................................................................................................ 2 2.2.4 Trip close current ........................................................................................................................................... 2 2.2.5 Setting error for various elements ............................................................................................................... 2 2.2.6 Whole group pickup time (including built time of relay)............................................................................ 3 2.2.7 Measurement system precision ................................................................................................................... 3 2.2.8 Binary input resolution .................................................................................................................................. 3 2.2.9 Binary input pickup voltage .......................................................................................................................... 3

2.3 INSULATION PROPERTY .............................................................................................................................................. 3 2.3.1 Insulation resistance...................................................................................................................................... 3 2.3.2 Dielectric strength .......................................................................................................................................... 3 2.3.3 Impulse voltage .............................................................................................................................................. 3 2.3.4 Moisture-proof and heat-proof performance .............................................................................................. 3

2.4 ANTI-ELECTROMAGNETIC INTERFERENCE PERFORMANCE ......................................................................................... 3 2.4.1 Impulse interference ...................................................................................................................................... 3 2.4.2 Fast transitional interference........................................................................................................................ 3 2.4.3 Electrostatic discharge .................................................................................................................................. 3 2.4.4 Radio-electromagnetic field interference.................................................................................................... 3 2.4.5 Surge ............................................................................................................................................................... 3

2.5 MECHANICAL PERFORMANCE .................................................................................................................................... 4 2.5.1 Vibration .......................................................................................................................................................... 4 2.5.2 Impulse ............................................................................................................................................................ 4 2.5.3 Impact .............................................................................................................................................................. 4

2.6 AMBIENT CONDITIONS ............................................................................................................................................... 4

3 DEVICE HARDWARE ................................................................................................................................................. 5

3.1 CABINET STRUCTURE................................................................................................................................................. 5 3.2 AC PLUG-IN ............................................................................................................................................................... 5 3.3 CPU PLUG-IN............................................................................................................................................................. 5 3.4 MAN-MACHINE INTERACTION MMI PLUG-IN............................................................................................................. 5 3.5 RELAY PLUG-IN.......................................................................................................................................................... 6 3.6 POWER SUPPLY PLUG-IN............................................................................................................................................. 6 3.7 CONNECTION DIAGRAM OF DEVICE SYSTEM .............................................................................................................. 6

4 PROTECTION PRINCIPLE AND CALIBRATION EXPLANATION ..................................................................... 7

4.1 TWO-STAGE TIME LIMITTED PHASE OVER-CURRENT PROTECTION .............................................................................. 7 4.1.1 Outline of principle ......................................................................................................................................... 7 4.1.2 Setting value sheet and calibration explanation........................................................................................ 8

4.2 TWO STAGE ZERO-SEQUENCE CURRENT PROTECTION................................................................................................. 8 4.2.1 Outline of principle ......................................................................................................................................... 8 4.2.2 Setting value sheet and calibration explanation........................................................................................ 9

4.3 SENSITIVE EARTH PROTECTION................................................................................................................................ 10 4.3.1 Outline of principle ....................................................................................................................................... 10 4.3.2 Setting value sheet and calibration explanation...................................................................................... 11

4.4 OVER-LOAD PROTECTION ........................................................................................................................................ 12 4.4.1 Outline of principle ....................................................................................................................................... 12 4.4.2 Setting value sheet and calibration explanation...................................................................................... 13

4.5 OVER-VOLTAGE PROTECTION................................................................................................................................... 14 4.5.1 Outline of principle ....................................................................................................................................... 14 4.5.2 Setting value sheet and calibration explanation...................................................................................... 14

4.6 UNDER-VOLTAGE PROTECTION ................................................................................................................................ 14 4.6.1 Outline of principle ....................................................................................................................................... 14 4.6.2 Setting value sheet and calibration explanation...................................................................................... 15

4.7 TV FAULT ALARM .................................................................................................................................................... 15 4.7.1 Outline of principle ....................................................................................................................................... 15 4.7.2 Setting value sheet and calibration explanation...................................................................................... 15

4.8 EXTERNAL TRIP ....................................................................................................................................................... 16 4.8.1 Outline of principle ....................................................................................................................................... 16 4.8.2 Setting value sheet and calibration explanation...................................................................................... 16

4.9 NEGATIVE SEQUENCE OVER-CURRENT PROTECTION ................................................................................................ 16 4.9.1 Outline of principle ....................................................................................................................................... 16 4.9.2 Setting value sheet and calibration explanation...................................................................................... 17

4.10 OVER START_UP TIME PROTECTION ( LONG TIME START_UP PROTECTION ) ............................................................ 18 4.10.1 Outline of principle..................................................................................................................................... 18 4.10.2 Setting value sheet and calibration explanation ................................................................................... 18

4.11 ROTOR-LOCKED PROTECTION ................................................................................................................................ 18 4.11.1 Outline of principle..................................................................................................................................... 18 4.11.2 Setting value sheet and calibration explanation ................................................................................... 19

4.12 THERMAL OVER-LOAD PROTECTION ...................................................................................................................... 19 4.12.1 Outline of principle..................................................................................................................................... 19 4.12.2 Setting value sheet and calibration explanation ................................................................................... 20

4.13 REVERSE INTERLOCKING OUTPUT.......................................................................................................................... 21 4.13.1 Outline of principle..................................................................................................................................... 21 4.13.2 Setting value sheet and calibration explanation ................................................................................... 22

5 SYSTEM PARAMETER AND SETTING VALUE LIST......................................................................................... 23

6 OPERATION METHOD FOR MAN-MACHINE INTERFACE SYSTEM............................................................. 30

6.1 PANEL...................................................................................................................................................................... 30 6.2 KEYBOARD EXPLANATION ....................................................................................................................................... 30 6.3 SIGNAL LAMP AND LCD EXPLANATION.................................................................................................................... 31 6.4 SERIAL INTERFACE................................................................................................................................................... 31 6.5 MENU STRUCTURE................................................................................................................................................... 31 6.6 FUNCTION INTRODUCTION....................................................................................................................................... 32

6.6.1 System parameter ....................................................................................................................................... 32 6.6.2 Protection setting value............................................................................................................................... 33 6.6.3 Measurement value ..................................................................................................................................... 33 6.6.4 Binary input status ....................................................................................................................................... 33 6.6.5 Protection soft plate..................................................................................................................................... 34 6.6.6 Event log ....................................................................................................................................................... 34 6.6.7 Fault report ................................................................................................................................................... 34 6.6.8 Operation record .......................................................................................................................................... 34 6.6.9 Test Binary Output....................................................................................................................................... 34 6.6.10 Calibration coefficient................................................................................................................................ 34 6.6.11 Communication status .............................................................................................................................. 34 6.6.12 Help information......................................................................................................................................... 34

6.7 OPERATING INSTRUCTION ........................................................................................................................................ 34 6.7.1 Main connection diagram ........................................................................................................................... 34 6.7.2 Main menu .................................................................................................................................................... 35 6.7.3 System parameter ....................................................................................................................................... 35 6.7.4 Protection setting value............................................................................................................................... 36 6.7.5 Debugging tool ............................................................................................................................................. 36

6.7.6 Measurement value ..................................................................................................................................... 36 6.7.7 History record ............................................................................................................................................... 36 6.7.8 Help information........................................................................................................................................... 36 6.7.9 Input password ............................................................................................................................................. 37 6.7.10 Display of operation fail ............................................................................................................................ 37 6.7.11 Protection trip automatically displays event log interface .................................................................... 37

7 DEBUGGING OUTLINE............................................................................................................................................ 38

7.1 CAUTIONS FOR DEBUGGING..................................................................................................................................... 38 7.2 CHECK BEFORE DEVICE IS POWERED ON .................................................................................................................. 38 7.3 INSULATION CHECK ................................................................................................................................................. 38 7.4 POWER-ON CHECK ................................................................................................................................................... 38 7.5 SAMPLING PRECISION CHECK................................................................................................................................... 38 7.6 BINARY INPUT CHECK .............................................................................................................................................. 38 7.7 RELAY CONTACT CHECK .......................................................................................................................................... 38 7.8 SETTING VALUE CHECK............................................................................................................................................ 38 7.9 OPEN & CLOSE CURRENT MAINTAINING TEST .......................................................................................................... 39 7.10 SEE NSP783 MOTOR PROTECTION MONITORING UNIT TEST REPORT FOR PROTECTION & MONITORING FUNCTION TEST ITEMS. ................................................................................................................................................................... 39

8 OPERATION EXPLANATION OF DEVICE............................................................................................................ 40

8.1 NORMAL OPERATION STATUS OF DEVICE .................................................................................................................. 40 8.2 DEVICE ABNORMAL INFORMATION MEANING AND SOLUTION SUGGESTION.............................................................. 40 8.3 CAUTIONS FOR INSTALLATION ................................................................................................................................. 40 8.4 EXAMPLE FOR FAULT MESSAGE................................................................................................................................ 40 8.5 PROTECTION EVENT MESSAGE LIST.......................................................................................................................... 43 8.6 REMOTE TABLE........................................................................................................................................................ 44

9 STORAGE ................................................................................................................................................................... 44

10 ORDERING INSTRUCTIONS ................................................................................................................................ 45

APPENDIX 1 TERMINAL LAYOUT............................................................................................................................ 46

APPENDIX 2 TERMINAL CONNECTION DIAGRAM ............................................................................................. 47

APPENDIX 3 CABINET STRUCTURE AND HOLE-OPENING DIMENSIONAL DRAWING............................ 49

APPENDIX 4 ORDER NUMBER ................................................................................................................................ 50

NSP783 Motor Manual English Version

Documents

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