P920 EN TDS C33 - Schneider Electricmt.schneider-electric.be/OP_MAIN/Micom/P92x_EN_TDS_C34.pdf · P92x/EN TDS/C34 This Document does not replace the Technical Manual . P92x Technical

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)


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


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.


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


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


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


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


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)



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)


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





2nd stage DT

3rd stage DT



−

=

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.


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


RESIDUAL OVERVOLTAGE / NEUTRAL DISPLACEMENT

(ANSI CODE 59N)



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




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.




2nd stage DT

3rd stage DT



−

=

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)


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







V2>> Voltage set 20.0… 720.0V (by step: 0.5)V

Time delay settings





2nd stage DT



−

=

1V

V

TMSt

S

2


TMS 0,5… 100.0 (by step: 0.5)

tRESET (only DT) 0.00… 100.00s (by step: 0.01s)


tV2> 0.00… 599.00s (by step: 0.01s)

tV2>> 0.00… 599.00s (by step: 0.01s)

Hysteresis


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.


POSITIVE SEQUENCE UNDERVOLTAGE (ANSI CODE 27D – P922 & P923)



V1< Voltage set 5.0… 130.0V (by step: 0.1V)

V1<< Voltage set 5.0… 130.0V (by step: 0.1V)


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).



−

=

1V

V

TMSt

S

1


TMS 0,5… 100.0 (by step: 0.5)

tRESET (only DT) 0.00… 100.00s (by step: 0.01s)


tV1< 0.00… 599.00s (by step: 0.01s)

tV1<< 0.00… 599.00s (by step: 0.01s)

Hysteresis


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








tF5 (definite time delay) 0.00… 599s.00 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






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






∆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



2nd stage DT


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


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


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


CONNECTION DIAGRAMS

33

34

+

-

Notes :

(1)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*

+

_

+_

+_

+_

+_


33

34

+

-

Notes :




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


3VTs CONFIGURATION (Phase-Neutral) + residual voltage

LEDs

See note 2


For last relay, connect 30 and 32 together)

*

See note 1


RL2

RL1

EL1

EL2

EL3

EL4

EL5

RL3

RL4

RL5

RL6

RL7

RL8

Output contacts (programmable) :

+

_

+_

+_

+_

+_

P0390ENb


33

34

+

-

Notes :




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


3VTs CONFIGURATION (Phase-Phase) + residual voltage

LEDs

See note 2



*

See note 1


RL2

RL1

EL1

EL2

EL3

EL4

EL5

RL3

RL4

RL5

RL6

RL7

RL8

+

_

+_

+_

+_

+_

P0391ENb


33

34

+

-C B

A

Notes :




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


RL3

16

14

RL4

20

18

RL5

3

1

RL6

7

5

RL7

9

11

RL8

13

15

4 programmable LEDs

Earthconnection


2VTs CONFIGURATION + residual voltage

LEDs

See note 2



*

See note 1


RL2

RL1

EL1

EL2

EL3

EL4

EL5

RL3

RL4

RL5

RL6

RL7

RL8

+

_

+_

+_

+_

+_

P0392ENb


33

34

+

-C B

A

Notes :




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


RL3

16

14

RL4

20

18

RL5

3

1

RL6

7

5

RL7

9

11

RL8

13

15

4 programmable LEDs

Earthconnection


LV connection for P92x (220-480V range)

LEDs

See note 2



*

See note 1


RL2

RL1

EL1

EL2

EL3

EL4

EL5

RL3

RL4

RL5

RL6

RL7

RL8

A B C

33

34

+

-C B

A

Notes :




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


RL3

16

14

RL4

20

18

RL5

3

1

RL6

7

5

RL7

9

11

RL8

13

15

4 programmable LEDs

Earthconnection


LEDs

See note 2



*

See note 1


RL2

RL1

EL1

EL2

EL3

EL4

EL5

RL3

RL4

RL5

RL6

RL7

RL8

AN B C

+

_

+_

+_

+_

+_

+

_

+_

+_

+_

+_

P0393ENb


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


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.


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

Documents

P920 EN TDS C33 - Schneider Electricmt.schneider-electric.be/OP_MAIN/Micom/P92x_EN_TDS_C34.pdf · P92x/EN TDS/C34 This Document does not replace the Technical Manual . P92x Technical