7UT613_63x_Manual_A2_4a1-21

A.3 Connection Examples

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Figure A-14 Connection example 7UT613 for a three-phase power transformer

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Figure A-15 Connection example 7UT613 for an earthed auto-transformer with current transformer between starpoint and earthing point

A.3 Connection Examples

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Figure A-16 Connection example 7UT613 for an earthed auto-transformer with brought-out delta winding capable of car-rying load (tertiary winding) and current transformer between starpoint and earthing point

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Figure A-17 Connection example 7UT613 for an auto-transformer bank with protected object auto-transformer branch-points, with individually accessible earthing electrodes equipped with CTs (M3). The CTs on the earthing side constitute a separate side for current comparison for each transformer of the bank. The starpoint of the CTs at M3 is routed via an auxiliary input (IZ1), which allows realisation of restricted earth fault protection and/or earth overcurrent protection.

A.3 Connection Examples

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Figure A-18 Connection example 7UT613 for a single-phase power transformer with current transformer between starpoint and earthing point

Figure A-19 Connection example 7UT613 for a single-phase power transformer with only one current transformer (right side)

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Figure A-20 Connection example 7UT613 for a generator or motor

Figure A-21 Connection example 7UT613 as transversal differential protection for a generator with two windings per phase

A.3 Connection Examples

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Figure A-22 Connection example 7UT613 for an earthed shunt reactor with current trans-former between starpoint and earthing point

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Figure A-23 Connection example 7UT613 as high-impedance protection on a transformer winding with earthed starpoint (the illustration shows the partial connection of the high-impedance protection); IZ3 is connected to the high-sensitivity input

A.3 Connection Examples

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Figure A-24 Connection example 7UT613 for a three-phase power transformer with current transformers between star-point and earthing point, additional connection for high-impedance protection; IZ3 connected to the high-sensitivity input

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Figure A-25 Connection example 7UT613 as single-phase busbar protection for 7 feeders, illustrated for phase L1

A.3 Connection Examples

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Figure A-26 Connection example 7UT613 as busbar protection for 6 feeders, connected via external summation trans-formers (SCT) — partial illustration for feeders 1, 2 and 6

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A.3.2 Voltage Transformer Connection Examples

Figure A-27 Voltage connections to three wye-connected voltage transformers (only in 7UT613 and 7UT633)

A.3 Connection Examples

5377UT613/63x ManualC53000-G1176-C160-2

Figure A-28 Voltage connections to three wye-connected voltage transformers with addition-al open-delta windings (e-n–windings; only in 7UT613 and 7UT633)

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A.3.3 Assignment of Protection Functions to Protected Objects

Not every protection function implemented in the 7UT613/63x is useful or even possi-ble for every conceivable protected object. The following table shows which protection functions are possible for which protected objects. Once a protected object has been configured (as described in subsection 2.1.3), only those protection functions are allowed and settable that are valid according to the table below.

Figure A-29 Utilisation of the protective functions in different protected objects

A.4 Current Transformer Requirements

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A.4 Current Transformer Requirements

Formula symbols/terms used (in accordance with IEC 60044-6, as defined)

The transient rated dimensioning factor Ktd depends on the device version and the primary time constant Tp. For the devices 7UT613/63x with a required saturation-free time of only 1/4 period, the influence of Tp is negligible.

For CT's that are defined by the rated symmetrical short-circuit current factor Kssc and the rated burden Rb (e.g. 5P, 10P), the effective K’ssc can be calculated by the formula:

The minimum required K’ssc can be calculated by the formula:

Condition: K’ssc (required) ≤ K'ssc (r.m.s.)

Kssc = rated symmetrical short-circuit current factor(example: CT 5P20 → KSSC = 20)

K'ssc = effective symmetrical short-circuit current factorKtd = rated transient dimensioning factorIscc max (ext.

fault)

= maximum symmetrical through flowing fault current

Ipn = CT rated primary currentIsn = CT rated secondary currentRct = secondary winding d.c. resistance at 75 oC

(or other specified temperature)Rb = rated resistive burdenR'b = Rlead + Rrelay = connected resistive burdenTp = primary time constant (net time constant) Vk = knee-point voltage in V (r.m.s.)Rrelay = relay burden

with:I = single conductor length from CT to relay in mρ = specified resistance = 0.0175 Ω mm2/m (copper wires) at 20 oC

(or other specified temperature)A conductor cross-section in mm2

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Current Transform-er in accordance with BS 3938/IEC 60044-1 (2000)

The values of an IEC class P transformer can be converted to the values for an IEC class PX (BS class X) transformer by using the following formula:

Example: IEC 60044: 600/1, 5P10, 15VA, Rct = 4 Ω

IEC PX or BS class X:

Current Transform-er in accordance with ANSI/IEEE C 57.13

Class C of this standard defines the CT by its secondary terminal voltage at 20 times rated current, for which the ratio error shall not exceed 10%. Standard classes are C100, C200, C400 and C800 for 5A rated secondary current.

The approximate terminal voltage can be derived from the IEC values, as follows:

ANSI transformer definition

Us.t.max = 20 • 5A • Rb • Kssc/20

with:

Rb = Pb/Isn2 and Isn = 5A

one derives at

Us.t.max = Pb • Kssc/5A

Example: IEC 60044: 600/5, 5P20, 25VA

ANSI C57.13:

Us.t.max = 25VA • 20/5A = 100V, in accordance with class C100

The calculations listed above are simplified in order to facilitate a quick and safe CT calculation/verification. An accurate calculation/verification can be carried out with the Siemens CTDIM program as from V3.21. The results of the CTDIM program have been released by the device manufacturer.

Relay type transientdimensioning factor Ktd

minimum required factorK'SSC

min. requiredkneepoint voltage

7UT613/63x Transf.3

BB/line3

Gen./Motor5

A.4 Current Transformer Requirements

5417UT613/63x ManualC53000-G1176-C160-2

Mismatching factor for 7UT613/63x, (limited resolution of the measurement)

Caution: If earth fault differential protection is used, the requirement for the phase current transformer of the REF side is as follows: 1/4 ≤ FAdap ≤ 4, (for the starpoint trans-former remains 1/8 ≤ FAdap ≤ 8)

Figure A-30 CT verification for Devices 7UT613/63x

The CB layout within the power station unit is not specified.

where:InO = rated current of the protected object

(in relation to the parameterised rated current)UnO = parameterised rated current of the protected objectINrelay = nominal device currentSNmax = maximum (rated) power of the protected object

(for transformers: side with the largest (rated) load)

x”d = sub-transient direct-axis reactance of the generator in p.u.Uk = transformer short-circuit voltage HV - LV in %Rrelay = assumed with 0.1 Ω, (the consumption of the above devices is below

0.1 VA)

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with:c = voltage factor (for generators: 1,1)SNO

M

= nominal power of the transformer in kVA

UNO

M

= nominal voltage of the transformer in kV

SNG = nominal power of the generator in kVAUNG = nominal voltage of the generator in kV

A.5 Default Settings

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A.5 Default Settings

When the device leaves the factory, a large number of LED indicators, binary inputs and outputs as well as function keys are already preset. They are summarized in the following tables.

A.5.1 LEDs

Table A-1 LED Indication Presettings

A.5.2 Binary Input

Table A-2 Binary input presettings for all devices and ordering variants

A.5.3 Binary Output

Table A-3 Output relay presettings for all devices and ordering variants

LEDs Allocated Func-tion

Function No. Description

LED1 Relay TRIP 511 Relay GENERAL TRIP commandLED2 Relay PICKUP 501 Relay PICKUPLED3 >Buchh. Trip 392 >Tripp. stage from Buchholz protec-

tionLED4 no default setting - -LED5 no default setting - -LED6 no default setting - -LED7 no default setting - -LED8 no default setting - -LED9 no default setting - -LED10 no default setting - -LED11 no default setting - -LED12 no default setting - -LED13 Error Sum Alarm 140 Error with a summary alarm

Alarm Sum Event 160 Alarm Summary EventLED14 FaultConfig/Set 311 Fault in configuration / setting

Binary Input Allocated Func-tion

Function No. Description

BI1 >Reset LED 5 >Reset LEDBI2 >Buchh. Trip 392 >Tripp. stage from Buchholz protec-

tion

Binary Output Allocated Func-tion

Function No. Description

BO1 Relay TRIP 511 Relay GENERAL TRIP commandBO2 Relay PICKUP 501 Relay PICKUPBO3 >Buchh. Trip 392 >Tripp. stage from Buchholz protec-

tionBO4 Error Sum Alarm 140 Error with a summary alarm

Alarm Sum Event 160 Alarm Summary Event

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A.5.4 Function Keys

Table A-4 Applies to all devices and ordered variants

Function Keys Allocated Func-tion

Function No. Description

F1 Display of opera-tional instructions

- -

F2 Display of primary operational mea-sured values

- -

F3 An overview of the last 8 network faults

- -

F4 >QuitG-TRP >Quitt Lock Out: General TripResetting the reclo-sure interlocking

- -

A.5 Default Settings

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A.5.5 Default Display

For devices with a four-line display, you can scroll among the basic displays shown below. The numerical values shown are examples. The device will display only those values that make sense for the current application. For instance, voltages will only be shown if the device is provided with voltage inputs and these inputs have been config-ured; with single-phase transformers there will be no phase L2.

Figure A-31 Default display for 4-line display*) depending on the phase connected (address 396 PHASE SELECTION)

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For devices with a graphic display, the basic displays shown below may appear: The device will display only those values that make sense for the current application. For instance, voltages and powers will only be shown if the device is provided with voltage inputs and these inputs have been configured; with single-phase transformers there will be no phase L2.

Figure A-32 Basic graphic displays*) depending on the phase connected (address 396 PHASE SELECTION)

A.5 Default Settings

5477UT613/63x ManualC53000-G1176-C160-2

A.5.6 Pre-defined CFC Charts

On delivery of the SIPROTEC 4 device provides worksheets with preset CFC-charts.

Figure A-33 CFC Charts for Transmission Block and Reclosure Interlocking

The first chart converts the binary input „>DataStop“ from a single-point indication (SP) into an internal single-point indication (IM).

The second chart implements a reclosure interlocking feature which prevents a reclo-sure of the circuit breaker following a device trip until the trip has been acknowledged manually.

Note

„G-TRP QUITTIE“ must be allocated in addition to a trip relay!

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A.6 Protocol-dependent Functions

Protocol → IEC60870-5-103

IEC 61850 Eth-ernet (EN100)

PROFIBUS FMS

PROFIBUS DP

DNP3.0 Modbus ASCII/RTU

Additional Service inter-face (optional)

Function ↓

Operational Measured values

Yes (fixed values)

Yes Yes Yes Yes Yes Yes

Metered Values Yes Yes Yes Yes Yes Yes YesFault Recording Yes Yes Yes No.

Only via additional service inter-face

No. Only via additional service inter-face

No. Only via additional service inter-face

Yes

Remote relay setting

No. Only via additional in-terface

No. Only via additional inter-face

Yes No. Only via additional service inter-face

No. Only via additional service inter-face

No. Only via additional service inter-face

Yes

User-defined annunciations and switching objects

Yes Yes Yes User-defined annuncia-tions in CFC

User-defined annuncia-tions in CFC

User-defined annuncia-tions in CFC

Yes

Time synchroni-sation

Via protocol; DCF77/IRIG B; Interface; Binary input

Via protocol (NTP); DCF77/IRIG B; Interface; Binary input

Via protocol; DCF77/IRIG B; inter-face;binary input

Via protocol; DCF77/IRIG B;Interface; Binary input

Via protocol; DCF77/IRIG B; Interface; Binary input

Via DCF77/IRIG B;Interface; Binary input

-

Annunciations with time stamp

Yes Yes Yes Yes Yes No Yes

Commissioning toolsIndication mea-sured value blocking

Yes Yes Yes No No No Yes

Generation of test annuncia-tions (DIGSI)

Yes Yes Yes No No No Yes

Physical propertiesMode Asynchro-

nousSynchronous Asynchro-

nousAsynchro-nous

Asynchro-nous

Asynchro-nous

-

Transmission mode

Cycli-cal/event

Cyclical/event Cycli-cal/event

Cyclical Cycli-cal/event

Cyclical -

Baud rate 4800 to 38400

up to 100 Mbaud up to 1.5 Mbaud

up to 1.5 Mbaud

2400 to 19200

2400 to 19200

2400 to 38400

Connection to device

Electrical: RS232RS485 opti-cal: ST con-nector

Ethernet TP Electrical: RS485 opti-cal: ST con-nector (single or double ring)

Electrical: RS485 opti-cal: ST con-nector (double ring)

Electrical: RS485 opti-cal: ST con-nector

Electrical: RS485 opti-cal: ST con-nector

Electrical: RS232RS485 opti-cal. ST con-nector

RTD-box 7XV5662-xAD Yes

A.7 Functional Scope

5497UT613/63x ManualC53000-G1176-C160-2

A.7 Functional Scope

Addr. Parameter Setting Options Default Setting Comments103 Grp Chge OPTION Disabled

EnabledDisabled Setting Group Change Option

105 PROT. OBJECT 3 phase transf.1 phase transf.Autotransf.Autotr. nodeGenerator/Motor3ph Busbar1ph Busbar

3 phase transf. Protection Object

112 DIFF. PROT. DisabledEnabled

Enabled Differential Protection

113 REF PROT. DisabledEnabled

Disabled Restricted earth fault protection

114 REF PROT. 2 DisabledEnabled

Disabled Restricted earth fault protection 2

117 COLDLOAD PICKUP DisabledEnabled

Disabled Cold Load Pickup

120 DMT/IDMT Phase DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT Phase

122 DMT/IDMT 3I0 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT 3I0

124 DMT/IDMT Earth DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT Earth

127 DMT 1PHASE DisabledEnabled

Disabled DMT 1Phase

130 DMT/IDMT Phase2 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT Phase 2

132 DMT/IDMT Phase3 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT Phase 3

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134 DMT/IDMT 3I0 2 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT 3I0 2

136 DMT/IDMT 3I0 3 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT 3I0 3

138 DMT/IDMT Earth2 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset

Disabled DMT / IDMT Earth 2

140 UNBALANCE LOAD DisabledDefinite TimeTOC IECTOC ANSIDT/thermal

Disabled Unbalance Load (Negative Se-quence)

142 THERM. OVERLOAD Disabledth rep w.o. senth repl w. sensIEC354

Disabled Thermal Overload Protection

143 OVEREXC. PROT. DisabledEnabled

Disabled Overexcitation Protection (U/f)

144 THERM.OVERLOAD2 Disabledth rep w.o. senth repl w. sensIEC354

Disabled Thermal Overload Protection 2

150 REVERSE POWER DisabledEnabled

Disabled Reverse Power Protection

151 FORWARD POWER DisabledEnabled

Disabled Forward Power Supervision

152 UNDERVOLTAGE DisabledEnabled

Disabled Undervoltage Protection

153 OVERVOLTAGE DisabledEnabled

Disabled Overvoltage Protection

156 FREQUENCY Prot. DisabledEnabled

Disabled Over / Underfrequency Protection

170 BREAKER FAILURE DisabledEnabled

Disabled Breaker Failure Protection

171 BREAKER FAIL. 2 DisabledEnabled

Disabled Breaker Failure Protection 2

180 DISCON.MEAS.LOC DisabledEnabled

Disabled Disconnect measurment location

181 M.V. SUPERV DisabledEnabled

Enabled Measured Values Supervision

182 Trip Cir. Sup. Disabled2 Binary Inputs1 Binary Input

Disabled Trip Circuit Supervision

Addr. Parameter Setting Options Default Setting Comments