MiCOM P92x
VOLTAGE & FREQUENCY RELAYS
P921 Software Version From V11 P922 Software Version From V11 P923 Software Version From V11
Technical Data Sheet P92x/EN TDS/C34
This Document does not replace the Technical Manual
P92x Technical Data Sheet 1 P92x/EN TDS/C34
MiCOM P92x range of relays provide reliable and high performance voltage and frequency protection. Versatile application and integration of protection functions with automation, control and measurement functions, combined with reduced maintenance, makes P92x relays an optimal and innovative choice. A friendly, multi-lingual user interface with programmable LEDs and logic equations, allows for simple and flexible applications on any type of network. Connecting the relay to virtually any kind of Digital Control System or SCADA is made possible by the wide range of updated communication protocols provided in P92x
APPLICATION
The MiCOM P92x relays provide fast and accurate protection
for use in numerous applications requiring voltage and
frequency based protection elements. To suit different
application needs and provide optimum solution, following
models are available:
P921: Voltage protection, 2 logic inputs, 4 outputs
P922: Voltage and frequency protection, event and fault
records, disturbance recorder, 5 logic inputs, and 8 output
contacts.
P923: Voltage and frequency protection (plus the rate of
change of frequency element df/dt and ∆U/∆T), event and fault
records, disturbance recorder, 5 logic inputs, 8 output
contacts.
The relays can be ordered with one of the two voltage input
range, to suit the application:
>>>> 57V to 130V
>>>> 220V to 480V
Integrated with 3 independent phase over voltage and phase
under voltage thresholds, MiCOM P921, P922 and P923
relays provide effective voltage protection for typical
applications like protection of motors, generators... etc. The
configurable detection logic (AND, OR) can also indicate the
absence of voltage, when the under voltage protection is used.
The 3 zero-sequence over voltage thresholds available in
P921, P22 & P923 relays can be applied:
>>>> to detect earth faults at the neutral point of generators, as
the relays are insensitive to the 3rd harmonics
>>>> to detect earth faults in high impedance earthed or
isolated electrical systems.
The negative sequence over voltage protection provided by
the P922 and P923 relays is designed to detect unbalanced
conditions it could therefore be used for motor, in which any
unbalance will lead to overheating and damage.
The P922 and P923 relays integrate 6 frequency thresholds
programmable as under or over frequency, which can be used
for automated load shedding/load restoration.
In addition, the P923 relays provide:
• 6 thresholds of instantaneous Rate Of Change Of
Frequency (df/dt) or average measurements over a
settable time interval.
• 4 thresholds of ∆U/∆T function to be used for
automated load shedding/load restoration.
MANAGEMENT FUNCTIONS
The protection functions in P92x complemented with a wide
range of control, measurement, monitoring, post fault
analysis and self-diagnostic features assist efficient
management of the primary system. These include:
>>>> Programmable logic equations
>>>> Programmable logic inputs and outputs
>>>> Circuit breaker control
>>>> Output contact latching
>>>> Circuit breaker status
>>>> Circuit breaker condition monitoring (in P922 & P923)
>>>> 2 setting groups (in P922 & P923)
>>>> True rms phase to phase, phase to neutral and residual
voltage measurement
>>>> Frequency measurement
>>>> Positive and negative sequence voltage measurement (in
P922 & P923)
>>>> Rolling and peak value display (in P922 & P923)
>>>> Sequence of event recording (in P922 & P923)
>>>> Fault recording (in P922 & P923)
>>>> Comprehensive disturbance recording (in P922 & P923)
>>>> Frequency disturbance record (only in P923)
>>>> Local and remote communication ports
>>>> Programmable LEDs
>>>> Multiple communication protocol options
>>>> Password protection
>>>> Power-up diagnostics and continuous self-monitoring of
relay.
>>>> User friendly setting and analysis software (MiCOM S1)
P92x Technical Data Sheet 2 P92x/EN TDS/C34
CONFIGURATION DEPENDING ON THE VT
MiCOM P921, P922 and P923 relays can be used in the
following configurations:
>>>> "3 phase-neutral VTs" or "3 phase-neutral VTs and 1
residual VT":
>>>> The voltage protection element can therefore operate
either from measured phase-to-neutral voltages, or from
phase-to-phase voltages which have been internally
calculated by the relay. Zero-sequence over voltage
protection will always be available; the presence of the
residual VT is designed to display the true RMS value of
the residual voltage.
>>>> "3 phase-phase VTs and 1 residual VT" or "2 phase-
phase VTs and 1 residual VT":
The voltage protection element can only operate from
measured phase-to-phase voltages. If the residual VT is
not connected, the zero-sequence over voltage protection
will not be available.
VOLTAGE PROTECTION
For each of the voltage protection function listed below, an
instantaneous signal and a time delayed signal is available
for each threshold.
For time-delayed signals, the first threshold of each function
("low threshold") offers the choice between a definite timer and
an inverse timer, to which a reset timer can be assigned. The
other thresholds only have one definite timer.
UNDER/OVERVOLTAGE
PROTECTION FUNCTIONS OVERVIEW P921 P922 P923
Configuration depending on the number
and type of voltage transformers X X X
Phase-to-neutral or phase-to-phase voltage
protection X X X
27 Phase under voltage (AND/OR logic) X X X
59 Phase over voltage (AND/OR logic) X X X
Settable hysteresis X X X
59N Zero-sequence over voltage X X X
59N Derived V0 sequence over voltage X X
47 Negative sequence over voltage - X X
27D Positive sequence under voltage - X X
81U/81O Under/over frequency - X X
81R Rate of change of Frequency - - X
Delta U / Delta T X
Blocking logic X X X
Under voltage Blocking (settable for P923) - X X
GENERAL FUNCTIONS
Digital inputs 2 5 5
Output relays 4 8 8
Remote communication (RS485 port) X X X
Local communication (RS232 port) X X X
Event recording - 250 250
Fault recording - 25 25
Disturbance recording - 5 5
Setting group 1 2 2
Time synchronisation (via digital input) X
Logic equation (AND / OR and NOT gates) X X X
Frequency change of rate of frequency (F + df/dt) X
VT Supervision X X
RELAY SETTING USING MICOM S1
P92x Technical Data Sheet 3 P92x/EN TDS/C34
Three thresholds are available for each function: each one can
be independently activated or deactivated. If a threshold is
activated, it can be configured to detect:
>>>> an over voltage on the 3 simultaneous phases (logic
"AND") or on at least one of the phases (logic "OR") for
the "Over voltage" function
>>>> an under voltage on the 3 simultaneous phases (absence
of voltage with the "AND" logic) or on at least one of the
phases (logic "OR") for the "Under voltage" function
>>>> The MiCOM P921, P922 and P923 relays provide a
programmable hysteresis (drop- out / pick-up ratio) as a
percentage of the under voltage and over voltage pick-up
values.
>>>> The P923 provides a settable under voltage block of all
the protection and control elements based on the
frequency.
ZERO-SEQUENCE OVERVOLTAGE
Three thresholds are available: each one can be
independently activated or deactivated. Depending on the VT
configuration, MiCOM P921, P922 and P923 relays will
operate from the zero sequence voltage, which is calculated
internally, or from the residual voltage, which is measured
directly.
Available from firmware version V11, a software band-pass
filter with an attenuation of 60 dB / decade and centered on
the fundamental frequency (50 or 60 Hz) is provided. The filter
can be enabled or disabled according to the setting.
NEGATIVE SEQUENCE OVERVOLTAGE
Two thresholds are available: each one can be independently
activated or deactivated. This function is based on the
negative-sequence component of the voltage, which is
calculated internally and displayed on the screen of the front
panel: It is designed to detect any voltage unbalance
condition.
POSITIVE SEQUENCE UNDERVOLTAGE
Two thresholds are available: Each one can be
independently activated or deactivated. This function is based
on the positive phase sequence component of the voltage,
which is calculated internally.
FREQUENCY PROTECTIONS
The following frequency based protection functions are
available. Frequency protection functions are inhibited below a
certain level of the measured secondary voltage (adjustable
level in P923).
UNDER/OVERFREQUENCY
Six thresholds are available: Each one can be configured to
detect an under or over frequency within the range [fn - 10Hz,
fn + 10Hz], where fn is the nominal frequency selected (50Hz
or 60Hz). A definite timer is assigned to each threshold.
RATE OF CHANGE OF FREQUENCY
Six thresholds are available: Each can be configured
independently within the range [-10 Hz/s, +10 Hz/s].
These functions are based on the calculation of the
instantaneous rate of change of frequency over a settable
integration time (number of cycles).
∆U/∆T FUNCTION
Four thresholds are available: Each can be configured
independently within the range [+/-1V, +/-200V] or [+/-4V à +/-
720V] for V and [0,1s, 10s] for T.
PROGRAMMABLE LOGIC EQUATIONS
The MiCOM P921/P922 & P923 relays integrate complete
logic equations to allow customization of the product based on
customer application.
Up to 8 independent Boolean equations can be used. Each
equation offers the possibility to use AND, OR & NOT logical
gates. Up to 16 parameters can be used for each equation
including any threshold and opto-input status. Every result of
equation can be time delayed, reused in another equation and
assigned to any output relays, trip, trip latching and/ or HMI
LEDs.
Each boolean equation result can be alarmed or not.
INPUTS/OUTPUTS/ PROGRAMMABLE LEDs
All logic inputs, output contacts (excluding the RL0
changeover output contact, dedicated to the "relay failed"
function) and the 4 LEDs of the MiCOM P921, P922 and P923
relays can be programmed. This affects in particular all logic
signals (instantaneous, time delayed) in the relays which can
be combined with the different output contacts and LEDs. The
output contacts can also be programmed to be latched.
BLOCKING LOGIC
Operation of the different protection elements of P92x can be
coordinated with other devices in the system. Two blocking
inputs are independently configurable. When active, they
freeze the associated protection timers and when they drop-
off, they re-impose the initial value if the fault conditions are
still present.
VT SUPERVISION
MiCOM P922 and P923 are able to detect a VT loss by using
VT supervision. The VTS uses two ways of detection, chosen
by the user:
>>>> a deactivation of the logical input VTS
>>>> a comparison between measured Vr and computed V0
(from VA, VB, and VC), only available in 3 Vpn + Vr
connection mode.
As soon as VT loss is detected, all voltage dependent
functions will be blocked (according to the setting), an alarm
can be raised.
P92x Technical Data Sheet 4 P92x/EN TDS/C34
SETTING GROUPS FOR PROTECTION FUNCTIONS
The MiCOM P922 and P923 relays have two independent
setting groups, which can be used to adapt the protection
functions to different operating conditions. The two groups can
be switched by activating a dedicated logic input, or by the
operator via the front panel, or locally (RS232 port) or remotely
(RS485 port). The switch from one setting group to another will
only take effect if no protection or automation functions are
running, to prevent unwanted tripping.
MEASUREMENTS
Depending on the configuration of the VTs connected to
MiCOM P921, P922 and P923 relays, the following values will
be measured and displayed as true RMS values on the back-lit
screen:
>>>> phase-to-neutral voltages Ua, Ub, Uc
>>>> phase-to-phase voltages Uab, Ubc, Uca
>>>> residual voltage Vo
>>>> frequency.
In addition, the MiCOM P922 and P923 relays calculate the
following values internally:
>>>> positive sequence voltage
>>>> negative sequence voltage
>>>> peak values of phase-to-neutral or phase-to-phase
voltages
>>>> rolling values of phase-to-neutral or phase-to-phase
voltages
All measurements are available locally and remotely.
LOGS AND RECORDS
All event, fault and disturbance records are time-stamped to
1ms by the internal real time clock. In the event of a loss of
auxiliary power, a flash memory is used to save the records,
the date and the time.
All records can be retrieved locally, using the MiCOM S1
setting software (RS232 port), or remotely (RS485 port).
EVENT RECORDS
Any change of state of logic inputs, output contacts or
protection functions will be recorded in the non-volatile
memory of the MiCOM P922 and P923 relays, with a
maximum of 250 events. When the memory is full, the oldest
events will be deleted, which will increase the storage capacity
for more recent events. Each event can be retrieved locally to
a PC using the MiCOM S1 support software through front
RS232 port or remotely using the rear RS485 port.
FAULT RECORDS
The MiCOM P922 and P923 relays can store the last 25 faults
that have occurred in non-volatile memory. Each record
provides the following information:
>>>> date and time of fault
>>>> origin of fault (under voltage, etc.)
>>>> faulted phase(s)
>>>> magnitude of the quantity which lead to the fault
>>>> magnitude of phase-to-neutral or phase-to-phase
voltages
>>>> magnitude of the zero-sequence voltage (if available)
DISTURBANCE RECORDS
Up to 5 disturbance files are stored in the relays. Even if the
total duration is fixed to 15s, it can be fully adjustable for easy
adaptation to customer requirements (1s / 3s / 5s / 7s / 9s).
There are stored in COMTRADE format. The disturbance
recording function is triggered either by any of the
programmed thresholds or by an external input, or through the
communications. All digital and analogical information are
stored in a flash memory and can be transferred using the
front communication port or the rear port to be used by an
external data analyser. Disturbance records are stored on a
non volatile flash memory.
FREQUENCY DISTURBANCE RECORDS
One frequency disturbance record, lasting 20 secs can be
stored in non-volatile memory by the MiCOM P923 relay. The
sampling frequency is fixed at 1 sample per cycle. The
mechanism that triggers the recording can be configured:
instantaneous or time delayed tripping, activation of a
dedicated logic input or time delayed logic equation signal.
CIRCUIT BREAKER STATUS & CONTROL
With MiCOM P921, P922 and P923 relays, the circuit breaker
can be controlled manually via logic inputs (AUX1 and AUX2),
with local or remote communication: the opening and closing
commands will therefore activate the programmed output
contacts. The LEDs can be programmed to indicate the status
of the circuit breaker.
DISTURBANCE RECORD ANALYSIS
P92x Technical Data Sheet 5 P92x/EN TDS/C34
CIRCUIT BREAKER MAINTENANCE
In addition to protecting and controlling the electrical network,
the P922 and P923 relays provide preventive and curative
maintenance of the circuit breakers. The MiCOM P922 and
P923 relays monitor the opening / closing time of the circuit
breaker and monitor the number of operations carried out. An
alarm is triggered as soon as the maximum opening or closing
time, or the maximum permitted number of operations is
exceeded.
COMMUNICATIONS
Two communication ports are available on MiCOM P921,
P922 and P923 relays: A rear RS485 port for remote
communication and a local front RS232 port for local
communication. A MiCOM S1 Studio software provided for
relay setting, record retrieving and analysis is fully Windows
TM compatible. This support Software allows easy setting of
any MiCOM relay model including P92x.
REMOTE COMMUNICATION The P921, P922 and P923 relays can be ordered with any one
of the following communication protocols.
>>>> MODBUS™
>>>> IEC 60870-5-103
>>>> Courier (K bus).
>>>> DNP3.0
The remote RS485 port can be connected to any SCADA or
digital control system to access settings, measurements and
alarms as well as all records.
LOCAL COMMUNICATION
The RS232 port on the front panel of MiCOM P921, P922 and
P923 relays has two functions:
>>>> to download a software version to the relay (upgrade,
change the language setting, modify the remote
communication protocol, etc.)
>>>> to connect a PC which has the setting software
USER INTERFACE
The user interface for MiCOM P921, P922 and P923 relays
comprises:
>>>> back-lit, 2 x 16 characters LCD display,
>>>> four dedicated LEDs to provide information such as
"Trip", "Alarm", "Warning" and "Relay Healthy"
>>>> four programmable LEDs: Each one lights up when
protection information is displayed, or if a logic input state
changes
>>>> five tactile keys for scrolling through the menus and
entering settings the pull-down structure of the menus
enables quick and easy access to required information
>>>> 1 key for reading and one for acknowledging alarms
HARDWARE & CASE
All the models of the MiCOM P92x range have a 4U draw out
metal case, and can be flush-mounted in switchboard or panel
or rack-mounted. External connections are made via MIDOS
type terminal blocks. Each connection includes two 4.8 mm
Faston and one M4 screw fixing.
USB/RS232 cable (to power the relay)
The USB/RS232 cable allows the user to be able to read and
change the settings or retrieve records and disturbance files of
the relay when it is not powered by its auxiliary source
COMMUNICATION INTERFACES
USB/RS232 CABLE – MICOM E2
P92x Technical Data Sheet 6 P92x/EN TDS/C34
TECHNICAL DATA
MECHANICAL SPECIFICATIONS
Design
Modular MiCOM Px2x platform relay: P921, P922 & P923 – Case 20TE – 4U Weight approx. 1.7 Kg
Mounting
Rack or flush mounting.
Connections
Rear (double faston + M4 screw per connection) Full draw-out.
Enclosure Protection
Front Panel: IEC 529: IP 52 Protection (front panel) against dust and dripping water – Protected against vertically falling
drops of water with the product in 4 fixed positions of 15° tilt with a flow rate of 3mm/minute for 2.5 minutes.
IP50 dust protection (whole case)
Rear connection: IP 10
Dimensions
See dimensions diagram. PC Interface
DIN 41652 connector (X6), type D-Sub, 9-pin.
ENVIRONMENTAL CONDITIONS
Recommended Ambient temperature range
Per IEC 60255-6: 1988
Operating Temperature Range: Continuous Withstand -25 to +55°C Limit (Note 1) -25 to +70°C.
Storage Temperature Range: -25 to +70°C
Tested as per
IEC 60068-2-1:2007:
-25°C storage (96 hours)
-40°C operation (96 hours)
IEC 60068-2-2:2007:
+85°C storage (96 hours)
+85°C operation (96 hours)
Note 1: The upper limit is permissible for a single 6- hour
duration within any 24 hour period.
Ambient Humidity Range
Per IEC 60068-2-3: 1969: 56 days at 93% relative humidity and +40 °C
Per IEC 60068-2-30: 1980: Damp heat cyclic, six (12 + 12) hour cycles, 93% RH, +25 to +55 °C
Solar Radiation
Avoid exposure of the front panel to direct solar radiation.
MECHANICAL ENVIRONMENT
Vibration Test
IEC 60255-21-1, class 2.
Shock and Bump Test
IEC 60255-21-2, class 1.and 2
Seismic Test
IEC 60255-21-3, Class 2.
PRODUCT SAFETY
73/23/EEC
Compliance with European Commission Low Voltage Directive. Compliance is demonstrated by reference to generic safety standards: IEC 60255-27:2005 EN 60255-5:2001
TYPE TESTS
Insulation
Per IEC 60255-5: 2000,
Insulation resistance > 100MΩ at 500Vdc (Using only electronic/brushless insulation tester).
High Voltage (Dielectric) Withstand
(i) Per IEC 60255-5: 2000, 2 kV rms AC, 1 minute:
Between all case terminals connected together, and the case earth, and between all terminals of independent circuits (RS232 ports excepted).
1.5kV rms AC for 1 minute, across open contacts and across open contacts of changeover output relays.
Impulse Voltage Withstand Test
Per IEC 60255-5: 2000 1.2 / 50 µs, peak value: 5 kV, 0.5J Between all terminals, and all terminals and case earth. Electromagnetic Compatibility (EMC)
1 MHz Burst Disturbance Test
IEC 61000-4-12, Class 3
Immunity to Electrostatic Discharge
Per IEC 60255-22-2: 1996, Class 3 and 4
Electrical Fast Transient bursts
IEC 60255-22-4 class 4. IEC 61000-4-4 class 4.
Immunity to Radiated Electromagnetic field
IEC60255-22-3 class 3. IEC61000-4-3 class 3.
Surge Immunity Test
IEC 61000-4-5, class 4.
Immunity to Conducted Disturbances Induced by Radio Frequency Fields
4 IEC 61000-4-6, class 3.
Power Frequency Magnetic Field Immunity
IEC 61000-4-8, class V.
EMC compliance
89/336/EEC 93/31/EEC
Compliance with European Commission EMC Directive.
Generic standards were used to establish conformity:
EN50081-2: 1994
EN60952-2: 1995
Product Specific Standards were used to establish conformity:
EN50263: 2000
P92x Technical Data Sheet 7 P92x/EN TDS/C34
RATINGS
Voltages
Nominal voltage Operating range 57 – 130Vph - ph eff 5 to 260Vph - ph eff 220 – 480Vph - ph eff 20 to 960Vph - ph eff Thermal withstand (Vn = 57V … 130V) Continuous 260Vph - ph eff 10 seconds 300Vph - ph eff Thermal withstand (Vn = 220V … 480V) Continuous 960Vph - ph eff 10 seconds 1300Vph - ph eff Auxiliary voltage
Relay auxiliary power supply Ordering
Code Nominal voltage range Vx
Operating voltage range
A 24 - 60 Vdc 19.2 - 76 Vdc
48 - 250 Vdc 38.4 - 300 Vdc F
48 - 240 Vac 38.4 - 264 Vac
48 - 250 Vdc 38.4 - 300 Vdc
48 - 240 Vac 38.4 - 264 Vac T
Special ENA (**)
48 - 250 Vdc 38.4 - 300 Vdc H
48 - 240 Vac 38.4 - 264 Vac
48 - 250 Vdc 38.4 - 300 Vdc V
48 - 240 Vac 38.4 - 264 Vac
48 - 250 Vdc 38.4 - 300 Vdc W
48 - 240 Vac 38.4 - 264 Vac
24 - 250 Vdc 19.2 - 300 Vdc Z
24 - 240 Vac 19.2 - 264 Vac
* The tolerance on the auxiliary voltage variations for the logic inputs is ±20% in DC voltage and 20%, +10% in AC voltage.
** Logic input recognition time = 5 ms for EA approval. Dedicated filtering on 24 samples (15 ms at 50 Hz)quency
Frequency
Nominal value 50Hz Operating range 40 – 60 Hz Nominal value 60Hz Operating range 50 – 70 Hz
Output Relay Contacts
The output contacts of the MiCOM P921-P922-P923 relays are AgNi dry contacts.
Make and carry : 30A for 3s
Carry : 5A continuous
Break : DC : 50W resistive DC : 25W inductive (L/R = 40ms) AC : 1250VA
AC : 1250 VA inductive (cos ϕ = 0.5)
Maxima : 5A and 300V
Loaded contact : 10 000 operation minimum
Unloaded contact : 100 000 operation minimum
Operation time < 7 ms
Logic inputs
All the logic inputs are optically-isolated and independent: MiCOM P921 relay has 2 logic inputs
MiCOM P922-P923 relays have 5 logic inputs.
Energization of the logic inputs is realised with a DC or AC auxiliary voltage.
BURDENS
Voltage circuits
REFERENCE VOLTAGE (VN)
VN = 57 – 130V <0,25 VA VN = 220 – 480V <0,36 VA
Auxiliary supply
Nominal*: 3W
* Nominal is with 50% of the optos energised and one relay per card energised
Optically-isolated inputs
Logic Inputs
Ord
eri
ng
C
od
e
Nominal Voltage range
Minimum polarisation
voltage
Maximum polarisation
current
Holding current
after 2 ms
Maximum continuous withstand
A 24 - 250 Vdc 19,2 Vdc 300 Vdc
F 24 - 240 Vac 19,2 Vac 35 mA 2.3 mA
264 Vac
24 - 250 Vdc 19,2 Vdc 300 Vdc T
24 - 240 Vac 19,2 Vac 35 mA 2.3 mA
264 Vac
H 129 Vdc 105 Vdc 3.0 mA @ 129 Vdc 145 Vdc
V 110 Vdc 77 Vdc 7.3 mA @ 110 Vdc 132 Vdc
W 220 Vdc 154 Vdc 3.4 mA @ 220 Vdc 262 Vdc
24 - 250 Vdc 19,2 Vdc 300 Vdc Z
24 - 240 Vac 19,2 Vac 35 mA 2.3 mA
264 Vac
P92x Technical Data Sheet 8 P92x/EN TDS/C34
PROTECTION SETTING RANGES
UNDERVOLTAGE (ANSI CODE 27)
Threshold settings (secondary values)
> Nominal voltage range A: 57 – 130V
V<= Voltage Set 0.5…130.0V (by step: 0.1V)
V<<= Voltage Set 0.5…130.0V (by step: 0.1V)
V<<<= Voltage Set 0.5…130.0V (by step: 0.1V)
> Nominal voltage range B: 220 – 480V
V<= Voltage Set 20.0…480.0V (by step: 0.5V)
V<<= Voltage Set 20.0…480.0V (by step: 0.5V)
V<<<= Voltage Set 20.0…480.0V (by step: 0.5V)
Time delay settings
Each voltage element is associated to an independent time delay.
Each measuring element time delay can be blocked by the operation of a user defined logic (optical isolated) input (see “Blocking logic1” or “Blocking logic2” functions).
Element Time delay type
1st stage Definite Time (DT) or IDMT
2nd stage DT
3rd stage DT
Inverse Time Delay Characteristic
The inverse characteristic is defined by the following formula:
−
=
1Vs
V
TMSt
Where: t = operating time in seconds TMS = time Multiplier Setting V = applied input voltage Vs = relay setting voltage
Note: this equation is only valid for Vs
Vratio < than 0.95
TMS 0.5…100.0 (by step: 0.5)
TRESET (only DT) 0.00…100.00s (by step: 0.01s)
Definite time delay characteristics
tV< 0.00… 599.00s (by step: 0.1s)
tV<< 0.00… 599.00s (by step: 0.1s)
tV<<< 0.00… 599.00s (by step: 0.1s)
Hysteresis
Hysteresis 1.02… 1.05%
Note: this range is a percentage value of the pickup value of the undervoltage elements
OVERVOLTAGE (ANSI CODE 59)
Threshold settings (secondary values)
> Nominal voltage range A: 57 – 130V
V>= Voltage Set 0.5…200.0V (by step: 0.1V)
V>>= Voltage Set 0.5…260.0V (by step: 0.1V)
V>>>= Voltage Set 0.5…260.0V (by step: 0.1V)
> Nominal voltage range B: 220 – 480V
V>= Voltage Set 20.0… 720.0V (by step: 0.5V)
V>>= Voltage Set 20.0… 960.0V (by step: 0.5V)
V>>>= Voltage Set 20.0… 960.0V (by step: 0.5V)
Time delay settings
Each voltage element is associated to an independent time delay.
Each measuring element time delay can be blocked by the operation of a user defined logic (optical isolated) input (see “Blocking logic1” or “Blocking logic2” functions).
Element Time delay type
1st stage Definite Time (DT) or IDMT
2nd stage DT
3rd stage DT
Inverse Time Delay Characteristic
The inverse characteristic is defined by the following formula:
−
=
1Vs
V
TMSt
Where: t = operating time in seconds TMS = time Multiplier Setting V = applied input voltage Vs = relay setting voltage
Note: this equation is only valid for Vs
Vratio > than 1.1
TMS 0.5…100.0 (by step: 0.5)
TRESET (only DT) 0.00… 100.00s (by step: 0.01s)
When the V> is associated with IDMT curve, the recommended maximum setting value should be less or equal to max. setting range divided by 20.
Definite time delay characteristics
tV> 0.00… 599.00s (by step: 0.1s)
tV>> 0.00… 599.00s (by step: 0.1s)
tV>>> 0.00… 599.00s (by step: 0.1s)
Hysteresis
Hysteresis 0.95… 0.98%
Note: this range is a percentage value of the pickup value of the overvoltage elements
P92x Technical Data Sheet 9 P92x/EN TDS/C34
RESIDUAL OVERVOLTAGE / NEUTRAL DISPLACEMENT
(ANSI CODE 59N)
Threshold settings (secondary values)
> Nominal voltage range A: 57 – 130V
V0> Voltage set 0.5… 130.0V (by step: 0.1V)
V0>> Voltage set 0.5… 130.0V (by step: 0.1V)
V0>>> Voltage set 0.5… 130.0V (by step: 0.1V)
V0der> Voltage set ∗ 0.5… 130.0V (by step: 0.1V)
V0der>> Voltage set ∗ 0.5… 130.0V (by step: 0.1V)
V0der>>> Voltage set ∗ 0.5… 130.0V (by step: 0.1V)
∗ P922&P923
> Nominal voltage range B: 220 – 480V
V0> Voltage set 2.0… 480.0V (by step: 0.5V)
V0>> Voltage set 2.0… 480.0V (by step: 0.5V)
V0>>> Voltage set 2.0… 480.0V (by step: 0.5V)
V0der> Voltage set ∗ 2.0… 480.0V (by step: 0.5V)
V0der>> Voltage set ∗ 2.0… 480.0V (by step: 0.5V)
V0der>>> Voltage set ∗ 2.0… 480.0V (by step: 0.5V)
∗ P922&P923
Time delay settings
Each voltage element (V0 or V0der) is associated to an independent time delay.
Each measuring element time delay can be blocked by the operation of a user defined logic (optical isolated) input (see “Blocking logic1” or “Blocking logic2” functions).
Element Time delay type
1st stage Definite Time (DT) or IDMT
2nd stage DT
3rd stage DT
Inverse Time Delay Characteristic
The inverse characteristic is defined by the following formula:
−
=
1V
V
TMSt
S
0
Where: t = operating time in seconds TMS = time Multiplier Setting V0 = applied input voltage Vs = relay setting voltage
TMS 0,5… 100.0 (by step: 0.5)
TRESET (only DT) 0.00… 100.00s (by step: 0.01s)
Definite time delay characteristics
tV0> 0.00… 599.00s (by step: 0.01s)
tV0>> 0.00… 599.00s (by step: 0.01s)
tV0>>> 0.00… 599.00s (by step: 0.01s)
tV0der> ∗ 0.00… 599.00s (by step: 0.01s)
tV0der>> ∗ 0.00… 599.00s (by step: 0.01s)
tV0der>>> ∗ 0.00… 599.00s (by step: 0.01s)
∗ P922&P923 only
Hysteresis
Hysteresis fixed 95%
When the V0> is associated with IDMT curve, the
recommended maximum setting value should be less or equal
to max. withstand voltage of the VT inputs divided by 20.
NEGATIVE SEQUENCE OVERVOLTAGE (ANSI CODE 47) ONLY P922 & P923
Threshold settings (secondary values)
> Nominal voltage range A: 57 – 130V
V2> Voltage set 5.0… 200.0V (by step: 0.1V)
V2>> Voltage set 5.0… 200.0V (by step: 0.1V)
> Nominal voltage range B: 220 – 480V
V2> Voltage set 20.0… 720.0V (by step: 0.5V)
V2>> Voltage set 20.0… 720.0V (by step: 0.5)V
Time delay settings
Each voltage element is associated to an independent time delay.
Each measuring element time delay can be blocked by the operation of a user defined logic (optical isolated) input (see “Blocking logic1” or “Blocking logic2” functions).
Element Time delay type
1st stage Definite Time (DT) or IDMT
2nd stage DT
Inverse Time Delay Characteristic
The inverse characteristic is defined by the following formula:
−
=
1V
V
TMSt
S
2
Where: t = operating time in seconds TMS = time Multiplier Setting V2 = applied input voltage Vs = relay setting voltage
TMS 0,5… 100.0 (by step: 0.5)
tRESET (only DT) 0.00… 100.00s (by step: 0.01s)
Definite time delay characteristics
tV2> 0.00… 599.00s (by step: 0.01s)
tV2>> 0.00… 599.00s (by step: 0.01s)
Hysteresis
Hysteresis fixed 95%
When the V2> is associated with IDMT curve, the
recommended maximum setting value should be less or equal
to max. withstand voltage of the VT inputs divided by 20.
P92x Technical Data Sheet 10 P92x/EN TDS/C34
POSITIVE SEQUENCE UNDERVOLTAGE (ANSI CODE 27D – P922 & P923)
Threshold settings (secondary values)
> Nominal voltage range A: 57 – 130V
V1< Voltage set 5.0… 130.0V (by step: 0.1V)
V1<< Voltage set 5.0… 130.0V (by step: 0.1V)
> Nominal voltage range B: 220 – 480V
V1< Voltage set 20.0… 480.0V (by step: 0.5V)
V1<< Voltage set 20.0… 480.0V (by step: 0.5V)
Time delay settings
Each voltage element is associated to an independent time
delay. Each measuring element time delay can be blocked by the operation of a user defined logic (optical isolated) input (see “Blocking logic1” or “Blocking logic2” functions).
Inverse Time Delay Characteristic
The inverse characteristic is defined by the following formula:
−
=
1V
V
TMSt
S
1
Where: t = operating time in seconds TMS = time Multiplier Setting V0 = applied input voltage Vs = relay setting voltage
TMS 0,5… 100.0 (by step: 0.5)
tRESET (only DT) 0.00… 100.00s (by step: 0.01s)
Definite time delay characteristics
tV1< 0.00… 599.00s (by step: 0.01s)
tV1<< 0.00… 599.00s (by step: 0.01s)
Hysteresis
Hysteresis fixed 105%
UNDER/OVERFREQUENCY (ANSI CODES 81U/81O – P922 & P923)
Setting Range Step size
F1 threshold Fn – 10Hz, Fn + 10Hz 0.01 Hz
tF1 (definite time delay) 0.00… 599.00s 0.01s
F2 threshold Fn – 10Hz, Fn + 10Hz 0.01 Hz
tF2 (definite time delay) 0.00… 599.00s 0.01s
F3 threshold Fn – 10Hz, Fn + 10Hz 0.01 Hz
tF3 (definite time delay) 0.00… 599.00s 0.01s
F4 threshold Fn – 10Hz, Fn + 10Hz 0.01 Hz
tF4 (definite time delay) 0.00… 599.00s 0.01s
F5 threshold Fn – 10Hz, Fn + 10Hz 0.01 Hz
tF5 (definite time delay) 0.00… 599s.00 0.01s
F6 threshold Fn – 10Hz, Fn + 10Hz 0.01 Hz
tF6 (definite time delay) 0.00… 599.00s 0.01s
Where: Fn = nominal frequency
RATE OF CHANGE OF FREQUENCY (ANSI CODES 81R – P923)
Threshold settings
Setting Range Step size
df/dt1 threshold –10 Hz/s, +10 Hz/s 0.1 Hz/s
df/dt2 threshold –10 Hz/s, +10 Hz/s 0.1 Hz/s
df/dt3 threshold –10 Hz/s, +10 Hz/s 0.1 Hz/s
df/dt4 threshold –10 Hz/s, +10 Hz/s 0.1 Hz/s
df/dt5 threshold –10 Hz/s, +10 Hz/s 0.1 Hz/s
df/dt6 threshold –10 Hz/s, +10 Hz/s 0.1 Hz/s
Integration time
cycle number 1 – 200 (by step: 1 cycle)
Validation number of protection
Validation 2 or 4 (by step: 2)
UNDER VOLTAGE BLOCKING
> Nominal voltage range A: 57-130V
protection block 5.0… 130.0V (by step: 0.1V)
> Nominal voltage range B: 220-480V
protection block 20.0… 480.0V (by step: 0.1V)
Note: For P922S the under voltage blocking threshold is fixed to 10% of the nominal setting voltage range.
FREQUENCY CHANGE OF RATE OF FREQUENCY (P923)
F1 + df/dt1 Yes / No
F2 + df/dt2 Yes / No
F3 + df/dt3 Yes / No
F4 + df/dt4 Yes / No
F5 + df/dt5 Yes / No
F6 + df/dt6 Yes / No
∆U/∆T FUNCTION (P923)
Threshold settings
Setting Range Step Size
∆U/∆T1 to 4 threshold
U 1st Range +/-1V to +/-200V 0.5V
T 1st Range 0.1s to 10 s 0.02 s
U 2nd
Range +/-4V to +/-720V 0.5V
T 2nd
Range 0.1s to 10 s 0.02 s
Element Time delay type
1st stage Definite Time (DT) or IDMT
2nd stage DT
P92x Technical Data Sheet 11 P92x/EN TDS/C34
MEASUREMENT AND RECORDS
SETTINGS The measured values are displayed on the LCD of the relay; they are true RMS values (up to the 10
th harmonic) and are
primary values.
They can also be read through the communication ports (RS232 or RS485).
DISTURBANCE RECORD (P922 AND P923) The MiCOM P922-P923 is able to store up to 5 records of 3.0s each.
- 5 X 3S, - 3 X 5S, - 2 X 7S - 1 X 9S.
Pre-time 0 to 2.9s/4.9s/6.9s/8.9s in steps of 0.1s Trigger for disturbance ON Inst. or ON Trip
FREQUENCY DISTURBANCE RECORD (P923 ONLY) The MiCOM P923 is able to store one record of 20s. Pre – time 5s (fixed) Post – time 15s (fixed) Sample rate 1 sample/cycle (fixed) Digital signals Logic inputs and output contacts status
Trigger logic Instantaneous or time delayed tripping, Dedicated logic input, Logic equation, Remote command.
COMMUNICATIONS
FRONT PORT (RS232)
Front port Communication Parameters (Fixed)
Protocol Modbus RTU
Address To be specified in the « COMMUNICATIONS » menu of the relay
Messages format IEC60870FT1.2
Baud rate 19200 bits/s
Parity Without
Stop bits 1
Data bits 8
REAR PORT (RS485)
Rear port settings
Setting options Setting available for:
Remote address 0 - 255 (step = 1) &
1 – 59999 (step = 1)
IEC / Kbus-Courier / Modbus RTU &
DNP3
Baud rate 9 600 or 19 200 bits/s IEC
Baud rate 300 to 38 400 bits/s
1200 to 38 400 bits/s
Modbus
DNP3
Baud rate 64000 bits/s Kbus
Parity “Even”, “Odd” or “Without”
Modbus RTU or DNP3
Stop bits 0 or 1 or 2 Modbus RTU or DNP3
CONTROL & MONITORING
CIRCUIT BREAKER STATE MONITORING The MiCOM P921-P922-P923 relays monitor the state of the circuit breaker using either 52a and/or 52b signals.
CIRCUIT BREAKER CONTROL It is possible to control the circuit breaker via the communication (RS232 or RS485 links).
Close pulse time 0.10… 5.00s (by step: 0.05)
Trip pulse time 0.10… 5.00s (by step: 0.05)
CIRCUIT BREAKER CONDITION MONITORING
Nb. Operations Alarm 0… 50000
Open time alarm 0.1… 5.0s
Close time alarm 0.1… 5.0s
VT SUPERVISION (P922 & P923)
VT Supervision Yes or No
Detection mode
(1)
“VTS input”, “delta Vr” or “delta Vr + Input”
tVTS Range A: 2 to 130V
Range B: 10 to 480V
(by step: 0.1V)
(by step: 0.1V)
Delta Vr (1)
0 to 100.0s (by step: 0.01s)
Inhib VTS/52a Yes or No
Blocked Function:
U< blocked Yes or No U> blocked Yes or No V0< blocked Yes or No V1> blocked Yes or No V2> blocked Yes or No Frequency blocked Yes or No df/dt blocked Yes or No du/dt blocked Yes or No
(1) only available if ‘VT connection’ = 3Vpn + Vr
CB SUPERVISION (P922 & P923)
CB OPEN Supervision
Yes or No
CB Opening time
0.1s to 5s (by step: 0.05s)
CB CLOSE Supervision
Yes or No
CB Closing time 0.1s to 5s (by step: 0.05s)
Number of operations
0 to 50000 (by step: 1)
Close pulse 0.1 to 5s (by step: 0.05s
Trip pulse time 0.1 to 5s (by step: 0.05s
P92x Technical Data Sheet 12 P92x/EN TDS/C34
LOGIC EQUATIONS
8 independants equations are available.
Each one can used a maximum of 16 operands among all start and trip signal
Each one can used NOT, OR, AND, OR NOT, AND NOT logical gates.
T operate 0 to 600s in steps of 0.01s
t Reset 0 to 600s in steps of 0.01s
VT RATIOS The primary and secondary rating can be independently set for each set of VT inputs, for example the residual VT ratio can be different to that used for the phase voltages.
Voltage ranges Primary Secondary
A: 57 – 130V 0,1 – 100kV step = 0.01kV
57 – 130V step = 0.1V
B: 220 – 480V 220 – 480V step = 10V
220 – 480V step = 10V
ACCURACY If no range is specified for the validity of the accuracy, then the specified accuracy shall be valid over the full setting range.
REFERENCE CONDITIONS Quantity Reference
conditions Test tolerance
General
Ambient temperature 20 °C ±2°C
Atmospheric pressure 86kPa to 106kPa -
Relative humidity 45 to 75 % -
Input energising quantity
Voltage Vn ±5%
Frequency 50 or 60Hz ±0.5%
Auxiliary supply DC 48V or 110V
AC 63.5V or 110V
±5%
MEASUREMENTS ACCURACY
Quantity Range Accuracy
Voltage Vn ±2%
Frequency 40 - 70Hz ±10mHz
P92x Technical Data Sheet 13 P92x/EN TDS/C34
PROTECTION ACCURACY
Functions Range Operate Reset Timer Accuracy Trip time
Undervoltage protection (V<, V<< and V<<<)
5-130V (range A) 20-480V (range B)
DT : Vs ±2%
IDMT : Voperate = 0.95Vs ±2%
(1.02-1.05)
Voperate ±2%
Greater of 2% or 40ms Greater of 5% or 40ms
≤ 30 ms; +/- 10 ms
Timers≤ 200ms; +/- 10 ms
Overvoltage protection (V>, V>> and V>>>)
0.5-260V (range A)
20-960V (range B)
5-260V: DT: Vs ±2%
0.5-5V: DT: Vs ±20%
IDMT : Voperate = 1.1Vs ±2%
(0.95-0.98)
Voperate ±2%
Greater of 2% or 40ms Greater of 5% or 40ms
≤ 30 ms; +/- 10 ms
Timers≥ 200ms; +/- 5%
Residual voltage protection (V0>, V0>> and V0>>>)
0.5-130V (range A) 2-480V (range B)
5-130V: DT : Vs ±2%
0.5-5V: DT : Vs ±7,5%
IDMT : Voperate = 1.1Vs ±2% (if direct measurement)
0.95
Voperate ±2%
Greater of 2% or40ms Greater of 5% or 40ms
≤ 30 ms; +/- 10 ms
Under/Over frequency 40 – 70Hz DT : fs ±10mHz with
>30% of Un or
<30% of Un and df/dt < 10 Hz/s
fs ±50mHz Greater of 2% or 80ms ≤ 75 ms; +/- 25 ms
df/dt 5-130V (range A) 20-480V (range B)
40 – 70Hz
+/- 0.5Hz/IT
(IT = number of frequency filtering periods)
>30% of Un or
<30% of Un and df/dt < 10 Hz/s
Greater of 2% or 20ms ≤ 75 ms; +/- 25 ms
∆U/∆T 5-130V (range A) 20-480V (range B)
U : 1% U if 5%Un<U<Umax
5 % U if 1%Un<U<5%Un
∆T : 0,5% or 3 ms
U: 1% if 5%Un<U<Umax
3 % othewise.
∆T: 0.5% or 3 ms
(20 ms + n * 20 ms) +/- 30 ms
(n = number of confirmation period).
Note: For residual voltage protection :
– 0.5V → 4V (range A) : hysteresis = Voperate – 0.2V
– 2V → 16V (range B) : hysteresis = Voperate – 0.8V
P92x Technical Data Sheet 14 P92x/EN TDS/C34
CONNECTION DIAGRAMS
33
34
+
-
Notes :
(1)Additional hardware for MiCOM P922 and P923 relay
(2)Additional hardware for MiCOM P922 and P923 relay
Scheme representing MiCOM relay off
41
4243
4445
4649
50
22
24
26
28
19
17
21
23
27
25
WD
37
35
36
RL1
6
4
2
RL2
12
10
8
29
31
32
-30
+
_
C B
A
Phase rotation
Programmable inputs :
See note 1
P0389ENb
Power supply Watchdog
Output contacts programmable
RL3
16
14
RL4
20
18
RL5
3
1
RL6
7
5
RL7
9
11
RL8
13
15
4 programmable LEDs
See note 2
Earthconnection
Communication port RS485
3VTs CONFIGURATION (Phase-Neutral)
LEDs
(* System end resistance.
For last relay, connect 30 and 32 together).
*
RL2
RL1
EL1
EL2
EL3
EL4
EL5
RL3
RL4
RL5
RL6
RL7
RL8
MiCOM P92*
+
_
+_
+_
+_
+_
P92x Technical Data Sheet 15 P92x/EN TDS/C34
33
34
+
-
Notes :
(1)Additional hardware for MiCOM P922 and P923 relay
(2)Additional hardware for MiCOM P922 and P923 relay
Scheme representing MiCOM relay off
41
4243
4445
4649
50
22
24
26
28
19
17
21
23
27
25
WD
37
35
36
RL1
6
4
2
RL2
12
10
8
29
31
32
-30*
+
_
C B
A
Phase rotation
Powersupply
Watchdog
RL3
16
14
RL4
20
18
RL5
3
1
RL6
7
5
RL7
9
11
RL8
13
15
4 programmable LEDs
Earthconnection
Communication port RS485
3VTs CONFIGURATION (Phase-Neutral) + residual voltage
LEDs
See note 2
(* System end resistance.
For last relay, connect 30 and 32 together)
*
See note 1
Programmable inputs :
RL2
RL1
EL1
EL2
EL3
EL4
EL5
RL3
RL4
RL5
RL6
RL7
RL8
Output contacts (programmable) :
+
_
+_
+_
+_
+_
P0390ENb
P92x Technical Data Sheet 16 P92x/EN TDS/C34
33
34
+
-
Notes :
(1)Additional hardware for MiCOM P922 and P923 relay
(2)Additional hardware for MiCOM P922 and P923 relay
Scheme representing MiCOM relay off
41
4243
4445
4649
50
22
24
26
28
19
17
21
23
27
25
WD
37
35
36
RL1
6
4
2
RL2
12
10
8
29
31
32
-30*
+
_
C B
A
Phase rotation
Powersupply
Watchdog
Output contacts (programmable) :
RL3
16
14
RL4
20
18
RL5
3
1
RL6
7
5
RL7
9
11
RL8
13
15
4 programmable LEDs
Earthconnection
Communication port RS485
3VTs CONFIGURATION (Phase-Phase) + residual voltage
LEDs
See note 2
(* System end resistance.
For last relay, connect 30 and 32 together)
*
See note 1
Programmable inputs :
RL2
RL1
EL1
EL2
EL3
EL4
EL5
RL3
RL4
RL5
RL6
RL7
RL8
+
_
+_
+_
+_
+_
P0391ENb
P92x Technical Data Sheet 17 P92x/EN TDS/C34
33
34
+
-C B
A
Notes :
(1)Additional hardware for MiCOM P922 and P923 relay
(2)Additional hardware for MiCOM P922 and P923 relay
Scheme representing MiCOM relay off
41
4243
4445
4649
50
22
24
26
28
19
17
21
23
27
25
WD
37
35
36
RL1
6
4
2
RL2
12
10
8
29
31
32
-30*
+
_
Phase rotation
Powersupply
Watchdog
Output contacts (programmable) :
RL3
16
14
RL4
20
18
RL5
3
1
RL6
7
5
RL7
9
11
RL8
13
15
4 programmable LEDs
Earthconnection
Communication port RS485
2VTs CONFIGURATION + residual voltage
LEDs
See note 2
(* System end resistance.
For last relay, connect 30 and 32 together)
*
See note 1
Programmable inputs :
RL2
RL1
EL1
EL2
EL3
EL4
EL5
RL3
RL4
RL5
RL6
RL7
RL8
+
_
+_
+_
+_
+_
P0392ENb
P92x Technical Data Sheet 18 P92x/EN TDS/C34
33
34
+
-C B
A
Notes :
(1)Additional hardware for MiCOM P922 and P923 relay
(2)Additional hardware for MiCOM P922 and P923 relay
Scheme representing MiCOM relay off
41
4243
4445
4649
50
22
24
26
28
19
17
21
23
27
25
WD
37
35
36
RL1
6
4
2
RL2
12
10
8
29
31
32
-30*
+
_
Phase rotation
Powersupply
Watchdog
Output contacts (programmable) :
RL3
16
14
RL4
20
18
RL5
3
1
RL6
7
5
RL7
9
11
RL8
13
15
4 programmable LEDs
Earthconnection
Communication port RS485
LV connection for P92x (220-480V range)
LEDs
See note 2
(* System end resistance.
For last relay, connect 30 and 32 together)
*
See note 1
Programmable inputs :
RL2
RL1
EL1
EL2
EL3
EL4
EL5
RL3
RL4
RL5
RL6
RL7
RL8
A B C
33
34
+
-C B
A
Notes :
(1)Additional hardware for MiCOM P922 and P923 relay
(2)Additional hardware for MiCOM P922 and P923 relay
Scheme representing MiCOM relay off
41
4243
4445
4649
50
22
24
26
28
19
17
21
23
27
25
WD
37
35
36
RL1
6
4
2
RL2
12
10
8
29
31
32
-30*
+
_
Phase rotation
Powersupply
Watchdog
Output contacts (programmable) :
RL3
16
14
RL4
20
18
RL5
3
1
RL6
7
5
RL7
9
11
RL8
13
15
4 programmable LEDs
Earthconnection
Communication port RS485
LEDs
See note 2
(* System end resistance.
For last relay, connect 30 and 32 together)
*
See note 1
Programmable inputs :
RL2
RL1
EL1
EL2
EL3
EL4
EL5
RL3
RL4
RL5
RL6
RL7
RL8
AN B C
+
_
+_
+_
+_
+_
+
_
+_
+_
+_
+_
P0393ENb
P92x Technical Data Sheet 19 P92x/EN TDS/C34
CASES & DIMENSIONS
9739
158168
49.5
Panel cut-out Flush mounting fixing details
Dimensionsin mm.
4 holes Ø 4.4 (M4 screw)
25.1 226
151.2 max.
Flush mountingP0395ENb
MiCOM
103
177
VA = 214.50 A
26
4 holes Ø 3.4
39
26
Ala rme
Trip
Auxiliary supply
Equip. fail
AUX. 1
AUX. 3
AUX. 2
AUX. 4
P921
49.5
MiCOM P921, P922 & P923 – 4U 20TE
P92x Technical Data Sheet 20 P92x/EN TDS/C34
MICOM P92X GUIDE FORM SPECIFICATION
Numerical voltage and frequency protections in drawout
4U metal case.
For Voltage protection, the following functions are
available:
> 3 independent phase overvoltage thresholds (instantaneous and time-delayed - ANSI 59 code),
> 3 independent phase undervoltage thresholds (instantaneous and time-delayed - ANSI 27 code),
> Settable Hysteresis thresholds for Undervoltage and Overvoltage functions,
> 3 independent zero-sequence overvoltage thresholds (instantaneous and time-delayed - ANSI 59N code),
> 3 independent derived zero-sequence overvoltage thresholds (instantaneous and time-delayed – ANSI 59N code) with settable hysteresis (P922 & P923),
> 2 independent negative sequence phase overvoltage thresholds (instantaneous and time delayed) with settable hysteresis (ANSI 47 code – P922 & P923),
> 2 independent positive sequence undervoltage thresholds (instantaneous and time delayed) with settable hysteresis (ANSI 27D code – P922 & P923).
For frequency protection, the following functions are
available:
> 6 independent over/underfrequency thresholds (instantaneous and time-delayed - ANSI 81U/81O codes – P922 & P923),
> 6 independent rate of change of frequency thresholds (ANSI 81R codes – P923),
> 1 adjustable undervoltage Blocking threshold,
> 6 independant frequency change of frequency (P923) thresholds.
For ∆U/∆T function, the following function is available:
> 4 independent thresholds (P923).
Control and monitoring: the following functions are
available:
> 8 independant boolean logical equations,
> Programmable I/O,
> Relay latching (ANSI 86 code),
> Display of true RMS values,
> 2 setting groups,
> Circuit breaker control and condition monitoring,
> VT supervision (P922&P923).
The relay provides complete measurements, metering
and recording functions including:
> Phase-to-neutral voltages Ua, Ub, Uc,
> Phase-to-phase voltages Uab, Ubc, Uca,
> Residual voltage V0,
> Frequency,
> Positive and negative sequence voltages (P922 & P923),
> Peak and rolling values of phase-to-phase or phase-to-neutral voltages (P922 & P923).
The following Measurement and Records are available:
> Records of the last 250 events, time-stamped to 1ms,
> Data records relating to the last 25 faults,
> Disturbance recorder with storage of up to 5 records (5 × 3s, 3 × 5s, 2 × 7s or 1 × 9s), 32 samples per cycle,
> Frequency disturbance record (P923) of 20s (pre-time: 5s, post-time: 15s).
The user interface includes the following elements:
> A 32-character alphanumeric (text or graphical) back-lit LCD display,
> An RS232 front port compatible with application software and PC setting software,
> An RS485 rear port compatible with the following protocols: MODBUS™, Courier, IEC 60870-5-103, DNP3.0,
> Programmable LEDs, with customised labelling,
> An easy to use PC setting software.
P92x Technical Data Sheet 21 P92x/EN TDS/C34
ORDERING INFORMATION
Information required with order
Versions Order - No. 1 – 3 4 5 6 7 8 9 10 11 12 13 14
MiCOM P92x - Voltage Protection Relays P92 * 0 * S * * * *
Variant
Voltage relay 1 Voltage / frequency relay (only choice for the “G” type of application) 2 Voltage/Frequency relay with (df / dt) relay 3
Voltage input
57 - 130 V A 220 - 480 V B
Application
Standard S
Auxiliary voltage Digital input voltage
48 - 250 Vdc / 48 - 240 Vac 105 - 145 Vdc (special application) H Note: option H not available with graphical display: Chinese 48 - 250 Vdc / 48 - 240 Vac 24 - 250 Vdc (Special option for ENA UK) T 48 - 250 Vdc / 48 - 240 Vac 110 Vdc -30% / +20% (special
application) (1) V
48 - 250 Vdc / 48 - 240 Vac 220 Vdc -30% / +20% (special application) (1)
W
24 - 250 Vdc / 24 - 240 Vac 24-250Vdc / 24-240Vdc Z
Communication interface
Modbus (only choice for the “G” type of application) 1 K-BUS / Courier 2 IEC 60870-5-103 3 DNP3.0 4
Language
French 0 English / American 1 Spanish 2 German 3 Italian 4 Russian 5 Polish 6 Portuguese 7 Dutch 8 Czech A Hungarian (not yet available) B Greek (not yet available) C Chinese (only available in phase II hardware) D Turkish (not yet available) E
Hardware version
All languages except Chinese (text display) 2 Chinese language only (graphical display) 3
Latest Major Software release
V XX.X (2) ?
Latest Minor Software release
V XX.X (2) ?
Mounting option None (default) 0 Pre-fixed HMI (no withdrawability) 1 Sealed cover 2 Pre-fixed with Auxiliary / digital input voltage option T 3
(1) Available only from PCV and PCW manufacturing (2) Unless specified, the latest version will be delivered
(*) please contact us in order to know the availabilities
AREVA T&D's Automation & Information Systems Business www.areva-td.com T&D Worldwide Contact Centre online 24 hours a day: +44 (0) 1785 25 00 70 http://www.areva-td.com/contactcentre/
PUBLIC
ATIO
NPUBLIC
ATIO
NPUBLIC
ATIO
NPUBLIC
ATIO
N:
:
:
: P920
P920
P920
P920Y/E
N T
DS
Y/E
N T
DS
Y/E
N T
DS
Y/E
N T
DS/C
34
/C34
/C34
/C34