Areva MiCOM P921 Technical Manual
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Areva MiCOM P921 Technical Manual

Areva MiCOM P921 Technical Manual

Voltage and frequency relays
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MiCOM
P921/P922/P923
Voltage and Frequency Relays
Technical guide
P92x/EN T/E11

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Do you have a question about the MiCOM P921 and is the answer not in the manual?

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Sergey
March 20, 2025

Lost password for micom 922 0ASM351 2106301

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2 comments:
Mr. Anderson
March 20, 2025

If the password for the Areva MiCOM P921 is lost or forgotten, modifying the stored parameters of the relay is prohibited. To reset the password, the user must contact the manufacturer or an authorized agent and provide the serial number of the relay. The manufacturer will then provide a stand-by password specific to the relay.

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Sergey
March 20, 2025

@Mr. Anderson не подскажете куда обращаться.

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Summary of Contents for Areva MiCOM P921

  • Page 1 MiCOM P921/P922/P923 Voltage and Frequency Relays Technical guide P92x/EN T/E11...
  • Page 3 Technical Guide P92x/EN T00/E11 Content MiCOM P921-P922-P923 Page 1/2 VOLTAGE AND FREQUENCY RELAYS MiCOM P921-P922-P923 CONTENT Safety Section Px2xxEN SSA11 Getting Started P92x/EN GS/E11 Connection diagrams P92x/EN CO/E11 Technical Data P92x/EN TD/E11 User Guide P92x/EN FT/E11 Communications P92x/EN CT/E11 Installation Guide...
  • Page 4 P92x/EN T00/E11 Technical Guide Content Page 2/2 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 5 Technical Guide Px2xx/EN SS/A11 SAFETY SECTION SAFETY SECTION...
  • Page 7 Technical Guide Px2xx/EN SS/A11 SAFETY SECTION Page 1/6 CONTENT SAFETY INSTRUCTIONS INSTALLATION, COMMISSIONING AND MAINTENANCE OPERATING CONDITIONS OF THE MiCOM RELAY Replacement of the batteries Current transformer circuits Dielectric withstand test REMOVAL AND DESTRUCTION OF THE MiCOM RELAY TECHNICAL SPECIFICATIONS...
  • Page 8 Px2xx/EN SS/A11 Technical Guide SAFETY SECTION Page 2/6 BLANK PAGE...
  • Page 9 Technical Guide Px2xx/EN SS/A11 SAFETY SECTION Page 3/6 SAFETY INSTRUCTIONS For your safety, please read these instructions before doing any work on the MiCOM relay. Health and safety The safety instructions described in this document are intended to guarantee correct installation and use of the MiCOM relay and to avoid any damage.
  • Page 10 Px2xx/EN SS/A11 Technical Guide SAFETY SECTION Page 4/6 INSTALLATION, COMMISSIONING AND MAINTENANCE Connection of the MiCOM relay The personnel in charge of the installation, commissioning and maintenance of a MiCOM relay must apply adequate procedures to guarantee safety when using the equipment.
  • Page 11 Technical Guide Px2xx/EN SS/A11 SAFETY SECTION Page 5/6 REMOVAL AND DESTRUCTION OF THE MiCOM RELAY Removal: The auxiliary power supply circuit of the relay can include capacitors for the power supply or for earthing. To avoid any risk of electrocution or thermal shock, it is appropriate to isolate the relay completely (the two direct current poles) from any power supply, then to discharge the capacitors in complete safety via the external terminals, before taking the device out of service.
  • Page 12 Px2xx/EN SS/A11 Technical Guide SAFETY SECTION Page 6/6 BLANK PAGE...
  • Page 13 Technical Guide P92x/EN GS/E11 MiCOM P921-P922-P923 Getting Started...
  • Page 15 CONTENT GENERAL CONSIDERATIONS Receipt of relays Electrostatic discharge (ESD) HANDLING OF ELECTRONIC EQUIPMENT RELAY MOUNTING UNPACKING STORAGE INTRODUCTION TO THE MiCOM P921-P922-P923 RELAYS RELAY FRONT DESCRIPTION Front view RELAY REAR DESCRIPTION PRODUCT IDENTIFICATION ENERGISING THE RELAY 10.1 System connections 10.2...
  • Page 16 P92x/EN GS/E11 Technical Guide Getting Started Page 2/18 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 17 Upon receipt, relays should be examined immediately to ensure no damage has been sustained in transit. If damage has been sustained during transit a claim should be made to the transport contractor and AREVA should be promptly notified.
  • Page 18 Technical Guide Getting Started Page 4/18 MiCOM P921-P922-P923 If you are making measurements on the internal electronic circuitry of an equipment in service, it is preferable that you are earthed to the case with a conductive wrist strap. Wrist straps should have a resistance to ground between 500kW – 10MW.
  • Page 19 8 LEDs simply displaying the state of the MiCOM P921-P922 and P923 relays. In addition, the use of the RS485 communication port makes it possible to read, reinitialise and change the settings of the relays, if required, from a local or remote PC computer equipped with appropriate software.
  • Page 20 Note that the MiCOM P921-P922 and P923 have the same size and the same front panel.
  • Page 21 Orange Equip Failure LED 3 is dedicated to the internal alarms of MiCOM P921, P922 and P923 relays. When a « non critical » internal alarm (typically communication Fault) is detected, the LED flashes continuously. When the Fault is classed as «...
  • Page 22 Technical Guide Getting Started Page 8/18 MiCOM P921-P922-P923 RELAY REAR DESCRIPTION P0386XXa FIGURE 2 : RELAY MiCOM P921, P922 AND P923 REAR VIEW P922 & P923 only P921, P922 and P923 P921, P922 and P923 Common Output5 2 Common Output1...
  • Page 23 Technical Guide P92x/EN GS/E11 aBCD Getting Started MiCOM P921-P922-P923 Page 9/18 PRODUCT IDENTIFICATION Prior to applying power, unclip and lift the top cover and check that the model number of the relay listed on the front panel (top left) corresponds to the model ordered.
  • Page 24 P92x/EN GS/E11 Technical Guide Getting Started Page 10/18 MiCOM P921-P922-P923 ENERGISING THE RELAY To energise correctly the relay, please follow carefully the following instructions. 10.1 System connections Please check the wiring scheme of your installation, Please check that the output relay N°1 is included in your trip circuit, 10.2...
  • Page 25 MiCOM P921-P922-P923 Page 11/18 ACCESS TO THE MENU Before using your MiCOM P921-P922 and P923, some settings have to be checked or modified. Lift top cover and lower down bottom cover in order to remove the transparent front cover. When the keypad is exposed, it provides full access to the menu options of the relay, with the information displayed on the LCD.
  • Page 26 P92x/EN GS/E11 Technical Guide Getting Started Page 12/18 MiCOM P921-P922-P923 11.3 VT Ratios The default ratios are equal to 1. If other ratios are required, please follow the instructions below. From the default display, press 2 once, 6 once, 2 once and press 6 once to access the «...
  • Page 27 Technical Guide P92x/EN GS/E11 aBCD Getting Started MiCOM P921-P922-P923 Page 13/18 QUICK MEASUREMENT CHECK 12.1 Voltage Switch off power supply. Connect a single phase voltage to terminals 41 and 42 (VA voltage) and set to 0 V. Switch on power supply and set as before. Switch on the AC voltage.
  • Page 28 The MiCOM S1 access software is used to set the relay locally from a laptop. 13.1 Configuration of the connection The configuration is shown below : MiCOM P921 relay Laptop 9 pin front port Battery Serial communication port (COM1 or COM2)
  • Page 29 Technical Guide P92x/EN GS/E11 aBCD Getting Started MiCOM P921-P922-P923 Page 15/18 CONNECTION DIAGRAMS MiCOM P921, P922 and P923 case connection diagram Relay healthy Watchdog Power supply Relay failed Output contacts (programmables) Phase rotation MiCOM P92 * See note 1 See note 3...
  • Page 30 COMPANY CONTACT INFORMATION If you need information regarding the operation of the MiCOM product that you have, please contact your local AREVA agent or the After Sales Service Department of AREVA and mention the reference of your MiCOM product. The MiCOM product references are mentioned under the upper flap of the product front plate.
  • Page 31 MiCOM P921-P922-P923 Page 17/18 REPAIR FORM Please complete this form and return it to AREVA T&D with the equipment to be repaired. This form may also be used in the case of application queries. AREVA T&D Dpt Ventes et Services Avenue de Figuières...
  • Page 32 P92x/EN GS/E11 Technical Guide Getting Started Page 18/18 MiCOM P921-P922-P923 What did happen ? ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ when did the fault occur ? Instant Yes/No Intermittent Yes/No Time delayed Yes/No (delete as appropriate) By how long ? _________________...
  • Page 33 Technical Guide P92x/EN CO/E11 aBCD MiCOM P921-P922-P923 Connection Diagrams...
  • Page 35 FIGURE 3 : 3VTs (PHASE-PHASE) + RESIDUAL VT CONNECTION FIGURE 4 : 2VTs + RESIDUAL VT CONNECTION FIGURE 5 : LV CONNECTION FOR P92x (220-480V RANGE) FIGURE 6 : PC<->RELAY SIGNAL CONNECTION FIGURE 7 : RS485 CONNECTION FIGURE 8 : MiCOM P921 AND P922 RELAYS CASE DIMENSIONS...
  • Page 36 P92x/EN CO/E11 Technical Guide Connection Diagrams Page 2/10 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 37 Connection Diagrams MiCOM P921-P922-P923 Page 3/10 ANALOGUE INPUTS The MiCOM P921-P922 and P923 relays have 4 voltage inputs : one voltage input for the residual voltage and 3 phase voltage inputs. VT inputs The following figures present different configurations of VTs.
  • Page 38 P92x/EN CO/E11 Technical Guide Connection Diagrams Page 4/10 MiCOM P921-P922-P923 1.1.2 3VTs (phase-neutral) + residual VT configuration Select the « 3V » configuration in the « CONFIGURATION » menu and in the « GENERAL » sub-menu. The 3 phase voltages VA, VB, VC and the residual voltage VR are then measured by the MiCOM relay.
  • Page 39 Technical Guide P92x/EN CO/E11 aBCD Connection Diagrams MiCOM P921-P922-P923 Page 5/10 1.1.3 3VTs (phase-phase) + residual VT configuration Select the « 3V » configuration in the « CONFIGURATION » menu and in the « GENERAL » sub-menu. The 3 line voltages VAB, VBC, VCA and the residual voltage VR are then measured by the MiCOM relay.
  • Page 40 P92x/EN CO/E11 Technical Guide Connection Diagrams Page 6/10 MiCOM P921-P922-P923 1.1.4 2VTs + residual VT connection Select the « 2V » configuration in the « CONFIGURATION » menu and in the « GENERAL » sub-menu. The 3 line voltages VAB, VBC, VCA and the residual voltage VR are then measured by the MiCOM relay.
  • Page 41 Technical Guide P92x/EN CO/E11 aBCD Connection Diagrams MiCOM P921-P922-P923 Page 7/10 1.1.5 LV connection for P92x (220-480V range) LV connection for P92x (220-480V range) Power Watchdog supply Phase rotation Output contacts (programmable) : See note 1 Programmable inputs : LEDs...
  • Page 42 This could happen if a ‘cross-over’ serial connector is used, i.e. one that connects pin 2 to pin 3, and pin 3 to pin 2, or if the PC has the same pin configuration as the relay. MiCOM P921 relay Laptop 9 pin front port...
  • Page 43 KITZ 101,102 and 201 can be used. Configuration is : 19200 bauds, 11 bits, full duplex. 2.2.3.2 RS232 / RS485 converter The following RS232/RS485 converters have been tested by AREVA : RS_CONV1 : convertor suitable for a short length and for...
  • Page 44 P92x/EN CO/E11 Technical Guide Connection Diagrams Page 10/10 MiCOM P921-P922-P923 CASE DIMENSIONS MiCOM P921-P922 and P923 relays are available in a 4U metal case for panel or flush mounting. Weight : 1.7 to 2.1 Kg External size : Height case...
  • Page 45 Technical Guide P92x/EN TD/E11 MiCOM P921-P922-P923 Technical Data...
  • Page 47 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 1/30 CONTENTS RATINGS Voltages Auxiliary voltage Frequency Logic inputs Output Relay Contacts BURDENS Voltage circuits Auxiliary supply Optically-isolated inputs PROTECTION SETTING RANGES Undervoltage (ANSI code 27) 3.1.1 Threshold settings (secondary values) 3.1.2...
  • Page 48 P92x/EN TD/E11 Technical Guide Technical Data Page 2/30 MiCOM P921-P922-P923 3.4.5 Hysteresis Positive sequence undervoltage (ANSI code 27D) only P922 & P923 3.5.1 Threshold settings (secondary values) 3.5.2 Time delay settings 3.5.3 Inverse Time Delay Characteristic 3.5.4 Definite time delay characteristics 3.5.5...
  • Page 49 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 3/30 ENVIRONMENTAL COMPLIANCE 10.1 Electrical environment 10.1.1 DC Supply Interruptions IEC60255-11:1979 10.1.2 AC Ripple on DC Supply IEC60255-11:1979 10.1.3 Disturbances on AC Supply - EN61000 - 4 - 11 :1994 10.1.4 High Frequency Disturbance IEC60255-22-1:1988 10.1.5 Fast Transient IEC60255-22-4:1992 &...
  • Page 50 P92x/EN TD/E11 Technical Guide Technical Data Page 4/30 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 51 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 5/30 Information required with order MiCOM P 9 2 Type of relay Voltage relay Voltage / Frequency relay (only choice for the « G » type of application) Voltage/frequency relay with df/dt Voltage inputs 57 –...
  • Page 52 10 seconds 300V 1300V ph - ph ph - ph Auxiliary voltage 3 auxiliary voltage ranges are available for the MiCOM P921-P922 and P923 relays, as described below : Operating ranges Nominal ranges 24 – 60 Vdc 19 - 72 V 48 –...
  • Page 53 Page 7/30 Logic inputs All the logic inputs are optically-isolated and independent : the MiCOM P921 relay has 2 logic inputs and the MiCOM P922-P923 relays have 5 logic inputs. Energization of the logic inputs is realised with a DC or AC auxiliary voltage.
  • Page 54 P92x/EN TD/E11 Technical Guide Technical Data Page 8/30 MiCOM P921-P922-P923 BURDENS Voltage circuits Reference voltage (Vn) Vn = 57 – 130V <0,25 VA Vn = 220 – 480V <0,36 VA Auxiliary supply Nominal* Maximum** * Nominal is with 50% of the optos energised and one relay per card energised...
  • Page 55 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 9/30 PROTECTION SETTING RANGES All the following functions can be activated or deactivated independently. Undervoltage (ANSI code 27) 3.1.1 Threshold settings (secondary values) Nominal voltage range : 57 – 130V Setting...
  • Page 56 P92x/EN TD/E11 Technical Guide Technical Data Page 10/30 MiCOM P921-P922-P923 Setting Range Step Size 0.5 – 100 Setting Range Step Size TRESET (only DT) 0 – 100s 0,01s UNDERVOLTAGE CHARACTERISTIC 1000 TMS = 5 TMS = 2 TMS = 1...
  • Page 57 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 11/30 3.1.4 Definite time delay characteristics Setting Range Step Size tV< 0 – 599s 0.01s tV<< 0 – 599s 0.01s tV<<< 0 – 599s 0.01s 3.1.5 Hysteresis Setting Range Step Size Hysteresis 1.02 –...
  • Page 58 P92x/EN TD/E11 Technical Guide Technical Data Page 12/30 MiCOM P921-P922-P923 3.2.3 Inverse Time Delay Characteristic The inverse characteristic is defined by the following formula : æ ö ç ÷ ç ÷ ç ÷ ç ÷ è ø where : = operating time in seconds...
  • Page 59 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 13/30 OVERVOLTAGE CHARACTERISTIC 1000 TMS = 5 TMS = 2 TMS = 1 0,01 Applied voltage input/relay setting voltage P0397ENa FIGURE 2 : IDMT CURVE FOR THE OVERVOLTAGE ELEMENT “V>”...
  • Page 60 P92x/EN TD/E11 Technical Guide Technical Data Page 14/30 MiCOM P921-P922-P923 3.2.4 Definite time delay characteristics Setting Range Step Size tV> 0 – 599s 0.01s tV>> 0 – 599s 0.01s tV>>> 0 – 599s 0.01s 3.2.5 Hysteresis Setting Range Step Size Hysteresis 0.95 –...
  • Page 61 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 15/30 Residual overvoltage / neutral displacement (ANSI code 59N) 3.3.1 Threshold settings (secondary values) Nominal voltage range : 57 – 130V Setting Range Step Size > Voltage set 0.5 – 130V 0.1V...
  • Page 62 P92x/EN TD/E11 Technical Guide Technical Data Page 16/30 MiCOM P921-P922-P923 3.3.4 Definite time delay characteristics Setting Range Step Size > 0 – 599s 0.01s >> 0 – 599s 0.01s >>> 0 – 599s 0.01s 3.3.5 Hysteresis Hysteresis fixed (see § 9.3 Protection accuracy) When the V >...
  • Page 63 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 17/30 3.4.3 Inverse Time Delay Characteristic The inverse characteristic is defined by the following formula : æ ö ç ÷ ç ÷ ç ÷ ç ÷ ç ÷ è ø where :...
  • Page 64 P92x/EN TD/E11 Technical Guide Technical Data Page 18/30 MiCOM P921-P922-P923 3.5.2 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”...
  • Page 65 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 19/30 Under/overfrequency (ANSI codes 81U/81O) only P922 & P923 Setting Range Step Size F1 threshold Fn – 10Hz, Fn + 10Hz 0.01 Hz tF1 (definite time delay) 0 – 599s 0.01s F2 threshold Fn –...
  • Page 66 P92x/EN TD/E11 Technical Guide Technical Data Page 20/30 MiCOM P921-P922-P923 3.7.4 Under voltage blocking Nominal voltage range : 57-130V Setting Range Step Size protection block 5.7 – 130V Nominal voltage range : 220-480V Setting Range Step Size protection block 20 – 480V...
  • Page 67 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 21/30 MEASUREMENT AND RECORDS Settings The measured values are displayed on the LCD of the relay ; they are true RMS values (up to the 10 harmonic) and are primary values.
  • Page 68 P92x/EN TD/E11 Technical Guide Technical Data Page 22/30 MiCOM P921-P922-P923 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...
  • Page 69 Page 23/30 CONTROL FUNCTIONS SETTINGS 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).
  • Page 70 P92x/EN TD/E11 Technical Guide Technical Data Page 24/30 MiCOM P921-P922-P923 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...
  • Page 71 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 25/30 No additional errors will be incurred for any of the following influencing quantities. Environmental Operative range (typical only) Temperature -25°C to +55°C Mechanical (Vibration, Shock, Bump, According to : Seismic)
  • Page 72 P92x/EN TD/E11 Technical Guide Technical Data Page 26/30 MiCOM P921-P922-P923 ENVIRONMENTAL COMPLIANCE The product complies with the following specifications : 10.1 Electrical environment 10.1.1 DC Supply Interruptions IEC60255-11:1979 The product will withstand a 20ms interruption in the auxiliary voltage in its quiescent condition.
  • Page 73 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 27/30 10.1.7 Conducted Emissions EN 55011:1991 Group 1 Class A limits. 0.15 - 0.5MHz, 79dBmV (quasi peak) 66dBmV (average). 0.5 - 30MHz, 73dBmV (quasi peak) 60dBmV (average). 10.1.8 Radiated Emissions EN 55011:1991 Group 1 Class A limits.
  • Page 74 P92x/EN TD/E11 Technical Guide Technical Data Page 28/30 MiCOM P921-P922-P923 10.1.13 Power Frequency Interference - Electricity Association (UK) EA PAP Document, Environmental Test Requirements for Protection Relays and Systems Issue I, Draft 4.2.1 1995. Class Length of comms Unbalanced Balanced Comms...
  • Page 75 Technical Guide P92x/EN TD/E11 Technical Data MiCOM P921-P922-P923 Page 29/30 ANSI TEST REQUIREMENTS The products shall meet the ANSI / IEEE requirements as follows :- 11.1 ANSI / IEEE C37.90.1989 Standards for relays and relay systems associated with electric power apparatus.
  • Page 76 P92x/EN TD/E11 Technical Guide Technical Data Page 30/30 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 77 Technical Guide P92x/EN FT/E11 MiCOM P921-P922-P923 User Guide...
  • Page 79 Description 7.1.2 HMI description "VT RATIO" sub-menu LEDS 5 to 8 configuration 7.3.1 Information available for MiCOM P921, MiCOM P922 and MiCOM P923 7.3.2 Additional information for the MiCOM P922 - MiCOM P923 7.3.3 Additional information for MiCOM P923 7.3.4 Example of configuration "CONFIG SELECT"...
  • Page 80 "2Vpp+Vr" configuration (2 “Phase-Phase” VTs + 1 residual VT) 8.1.4 "3Vpn+Vr" configuration (3 "Phase-Neutral" VTs + 1 residual VT) MiCOM P921, MiCOM P922 and MiCOM P923 : common measurements Specific measurements for the MiCOM P922-MiCOM P923 8.3.1 Maximum and average values 8.3.2...
  • Page 81 10.7.2 df/dt functionning CONTROL FUNCTIONS 11.1 "TRIP OUTPUT RLY" Menu 11.1.1 MiCOM P921 - P922 and P923 : common information 11.1.2 Additional information for the MiCOM P922 – MiCOM P923 relay 11.1.3 Additional information for the MiCOM P923 relay 11.2 "LATCH OUTPUTS"...
  • Page 82 11.8.2 HMI description 11.8.3 Additional information for the MiCOM P923 11.9 "INPUTS" Menu 11.9.1 Description 11.9.2 MiCOM P921 and MiCOM P922 : common information 11.9.3 Additional logic inputs for the MiCOM P922 and P923 relays 11.10 "CB SUPERVISION" Menu 11.10.1 Description 11.10.2 HMI description...
  • Page 83 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 5/110 PRELIMINARY DEFINITIONS In this manual, all the following definitions and notations will be used : Residual voltage = 3 x zero sequence voltage Zero sequence voltage V1, V2 Positive and negative sequence voltages...
  • Page 84 P92x/EN FT/E11 Technical Guide User Guide Page 6/110 MiCOM P921-P922-P923 INTRODUCTION TO THE USER INTERFACES AND SETTINGS OPTIONS The relay has three user interfaces: the front panel user interface via the LCD and keypad. · · the front port which supports ModBus communication.
  • Page 85 ‘Password’ cell in the ‘OP. PARAMETERS’ column of the menu. If the password is lost, an emergency password can be supplied – contact AREVA with the relay’s serial number.
  • Page 86 P92x/EN FT/E11 Technical Guide User Guide Page 8/110 MiCOM P921-P922-P923 2.3.1 Default Display and Menu Time-Out The front panel menu has a selectable default display. The relay will time-out and return to the default display and turn the LCD back-light off after 5 minutes of keypad inactivity.
  • Page 87 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 9/110 If the password is correct, the following message will appear : Password OK The “P” letter appears on the right hand side of the display : [27] Undervoltage After 5 s, the display reverts to the previous display.
  • Page 88 P92x/EN FT/E11 Technical Guide User Guide Page 10/110 MiCOM P921-P922-P923 MENU COLUMNS OF THE MiCOM P921 RELAY The menu of the MiCOM P921 is divided into columns which are: HEADINGS OF SUB – MENUS DESCRIPTION See at COLUMN PAGE OP PARAMETERS...
  • Page 89 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 11/110 MENU COLUMNS OF THE MiCOM P922 RELAY The menu of the MiCOM P922 is divided into columns which are: HEADINGS OF SUB – MENUS DESCRIPTION See at COLUMN PAGE OP PARAMETERS...
  • Page 90 P92x/EN FT/E11 Technical Guide User Guide Page 12/110 MiCOM P921-P922-P923 HEADINGS OF SUB – MENUS DESCRIPTION See at COLUMN PAGE LATCH OUTPUT Selection of latched output relays RELAYS AND LOGIC EQUAT Definition of the 2 logic equations T DELAY EQUATION...
  • Page 91 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 13/110 MENU COLUMNS OF THE MiCOM P923 RELAY The menu of the MiCOM P923 is divided into columns which are: HEADINGS OF SUB – MENUS DESCRIPTION See at COLUMN PAGE OP PARAMETERS...
  • Page 92 P92x/EN FT/E11 Technical Guide User Guide Page 14/110 MiCOM P921-P922-P923 HEADINGS OF SUB – MENUS DESCRIPTION See at COLUMN PAGE BLOCKING LOG1 t Allocation of the selected information to the blocking logic function 1 BLOCKING LOG2 t Allocation of the selected information to...
  • Page 93 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 15/110 Menu sequence P922 P921 P923 OP PARAMETERS OP PARAMETERS OP PARAMETERS CONFIGURATION CONFIGURATION CONFIGURATION 2 6 2 2 6 2 2 6 2 GENERAL GENERAL GENERAL 2 6 2 6...
  • Page 94 50 Hz Description : Indicates the current status of all the logic inputs : INPUTS : 54321 from 1 to 2 (MiCOM P921), from 1 to 5 (MiCOM P922 and P923). 00000 Range : no modifications allowed, display only. Note : state=0 => input deenergised, state=1 => input...
  • Page 95 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 17/110 Additional menu for MiCOM P922-P923 This menu allows the settings of the date and time of the MiCOM P922-P923, so that all the records (events, faults and disturbance) can be correctly time/date stamped.
  • Page 96 To gain access to the “CONFIGURATION” menu from the default display, press 2 once and 6 once. The accessible sub-menus are indicated below : · MiCOM P921 : CONFIGURATION 6 VT RATIO 6 LED 6 ALARM...
  • Page 97 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 19/110 · MiCOM P923 : CONFIGURATION 6 VT RATIO 6 LED 6 GROUP SELECT GENERAL 6 LED 6 CONF. LED 5 CONF. 4 V<= NO V<= NO CONFIGURATION … 6 ALARMS 6 CONFIGURATION FREQ.
  • Page 98 This menu is common to the MiCOM P921, P922 and P923 relays. It makes it possible to configure the VT ratios. Heading of the “VT RATIO” sub-menu VT RATIO Description : Primary of the voltage transformer(s) feeding the...
  • Page 99 To gain access to the “LED” menu from the default display, press once, once, once and twice. 7.3.1 Information available for MiCOM P921, MiCOM P922 and MiCOM P923 Heading of the “LED” sub-menu Description : selection of the instantaneous information "V<" LED 5 CONF. Range : YES/NO V< = Description : selection of the time-delayed information "tV<"...
  • Page 100 P92x/EN FT/E11 Technical Guide User Guide Page 22/110 MiCOM P921-P922-P923 Description : selection of the instantaneous information "V>" LED 5 CONF. Range : YES/NO V> = Description : selection of the time-delayed information "tV>" LED 5 CONF. Range : YES/NO tV>...
  • Page 101 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 23/110 7.3.2 Additional information for the MiCOM P922 - MiCOM P923 Description : selection of the instantaneous information"V2>" LED 5 CONF. Range : YES/NO V2> = Description : selection of the time-delayed information"tV2>"...
  • Page 102 P92x/EN FT/E11 Technical Guide User Guide Page 24/110 MiCOM P921-P922-P923 Description : selection of the instantaneous information"F4" (4 LED 5 CONF. frequency stage) Range : YES/NO F4 = Description : selection of the time-delayed information"tF4" LED 5 CONF. Range : YES/NO tF4 = Description : selection of the instantaneous information"F5"(5...
  • Page 103 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 25/110 7.3.3 Additional information for MiCOM P923 Description : selection of the 1 rate of change of frequency LED 5 CONF. element Range : YES/NO df/dt1= Description : selection of the 2 rate of change of frequency LED 5 CONF.
  • Page 104 P92x/EN FT/E11 Technical Guide User Guide Page 26/110 MiCOM P921-P922-P923 "CONFIG SELECT" sub-menu (only for MiCOM P922 and P923) This menu allows the user to select the active setting group (1or 2). By default, the active setting group is “GROUP 1”.
  • Page 105 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 27/110 “ALARM” sub-menu This menu allows the user to select the reset mode of the instantaneous informations and to configure the battery alarms. To gain access to the "ALARMS" menu from the default display, press 2 once, 6 once, 2 once and 6 3 times (P921) or 4 times (P922) or 5 times (P923).
  • Page 106 Technical Guide User Guide Page 28/110 MiCOM P921-P922-P923 “CONFIGURATION INPUTS” sub-menu This menu allows the user to configure the operation of the logic inputs ; either on falling edge/low level or on rising edge/high level. When selecting 1, the logic input becomes active when it is excited or energized, and inactive when it is de-energized.
  • Page 107 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 29/110 "FREQ. and df/dt CONFIG" submenu Additional menu for MiCOM P923 only. This menu allows the user to select the number of cycle to be involved in the calculation of the rate of change of frequency elements, and the number of confirmation of calculation for positionning the protection.
  • Page 108 P92x/EN FT/E11 Technical Guide User Guide Page 30/110 MiCOM P921-P922-P923 MEASUREMENTS All measured quantities are displayed in primary values (true RMS values, up to the harmonic). They are refreshed once per second. Configuration According to the connection scheme, which is selected, the phase or line voltages will be measured and then displayed.
  • Page 109 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 31/110 8.1.3 "2Vpp+Vr" configuration (2 “Phase-Phase” VTs + 1 residual VT) The 2 line voltages Vab, Vbc and the residual voltage Vr are then measured by the MiCOM relay. The derived quantities are : positive and negative sequences voltages (V1 and V2, only for MiCOM P922 and p923), and the Vca line voltage.
  • Page 110 User Guide Page 32/110 MiCOM P921-P922-P923 MiCOM P921, MiCOM P922 and MiCOM P923 : common measurements To gain access to the “MEASUREMENTS” menu from the default display, press 2 once and 6 twice. The measured quantities only will be displayed in this menu.
  • Page 111 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 33/110 Specific measurements for the MiCOM P922-MiCOM P923 In this menu, all the derived quantities are displayed : positive and negative sequence voltages, peak and rolling demands. 8.3.1 Maximum and average values The maximum and average values are calculated over a defined period of time : this time period for the calculation of the average values is defined in the “RECORDS”...
  • Page 112 P92x/EN FT/E11 Technical Guide User Guide Page 34/110 MiCOM P921-P922-P923 Description : average value of the phase B voltage. AVERAGE VB Rms = Note : this message only seen if "3Vpn" or "3Vpn+Vr" connection. 0.00 V Description : average value of the phase C voltage.
  • Page 113 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 35/110 COMMUNICATION Rear communication port description The rear communication port is provided by a 3-terminal screw connector located on the back of the relay. The rear port provides RS485 serial data communication and is intended for use with a permanently-wired connection to a remote control centre.
  • Page 114 Please refer to the cortec page (Chapter 3 of this Technical Guide). 9.3.1 Courier Interface Courier is the communication language developed by AREVA T&D to allow remote interrogation of its range of protection relays. Courier works on a master/slave basis where the slave units contain information in the form of a database, and respond with information from the database when it is requested by a master unit.
  • Page 115 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 37/110 To gain access to the “COMMUNICATION” menu from the default display, press 2 once and 6 3 times. The HMI is described below : Heading of the “COMMUNICATIONS” menu COMMUNICATION Description : selection of the function "COMMUNICATION"...
  • Page 116 P92x/EN FT/E11 Technical Guide User Guide Page 38/110 MiCOM P921-P922-P923 9.3.4 IEC60870-5-103 interface The IEC60870-5-103 interface is also a master/slave interface with the relay as the slave device. This protocol is based on the VDEW communication protocol. The relay conforms to compatibility level 2, compatibility level 3 is not supported.
  • Page 117 To gain access to the “PROTECTION” menu (or “PROTECTION G1” for MiCOM P922 and P923) from the default display, press once 2 and 4 times 6. The accessible sub-menus are then indicated below : · MiCOM P921 : PROTECTION 6 [59]OVERVOLTAGE 6 [59N]RESIDUAL O/V [27]UNDERVOLTAGE ·...
  • Page 118 P92x/EN FT/E11 Technical Guide User Guide Page 40/110 MiCOM P921-P922-P923 10.1 Undervoltage protection 10.1.1 Description This function can be configured according to the connection scheme of the VTs : phase-phase protection (delta connection) or phase-neutral protection (star connection). The configuration of this function can also be done in order to detect an absence of voltage for all phases : ·...
  • Page 119 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 41/110 Description : time delay setting for a definite time curve. [27] tV<= Range : 0 – 599s, step = 0.01s Note : this message only seen if “DMT” time delay selected...
  • Page 120 P92x/EN FT/E11 Technical Guide User Guide Page 42/110 MiCOM P921-P922-P923 10.2.2 HMI description To gain access to the “OVERVOLTAGE” sub-menu from the default display, press 2 once, 6 4 times, 2 once and 6 once. Heading of the “OVERVOLTAGE” menu...
  • Page 121 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 43/110 Description : setting of the HYSTERESIS element [59] HYSTERESIS = Range : 0.98 – 0.95 step of 0.01 0.98...
  • Page 122 P92x/EN FT/E11 Technical Guide User Guide Page 44/110 MiCOM P921-P922-P923 10.3 Zero sequence overvoltage (neutral displacement) protection The zero sequence overvoltage element functions according to the VT configuration. · VT configuration = 3V , then the [59N] will operate based on the residual voltage (due to the summation of the 3 phase voltages), measured on relay terminals (49-50).
  • Page 123 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 45/110 Description : time delay setting for a definite time curve. [59N] tV0>>= Range : 0 – 599s, step = 0.01s Note : definite time delay only for this stage 40 ms...
  • Page 124 P92x/EN FT/E11 Technical Guide User Guide Page 46/110 MiCOM P921-P922-P923 10.4 Negative sequence overvoltage protection (MiCOM P922 and P923) The relay will trip according to an inverse characteristic or a definite time characteristic for the first stage and according to a definite time characteristic for the second stage.
  • Page 125 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 47/110 10.5 Positive sequence undervoltage protection (MiCOM P922 and P923) The relay will trip according to an inverse characteristic or a definite time characteristic for the first stage and according to a definite time characteristic for the second stage.
  • Page 126 P92x/EN FT/E11 Technical Guide User Guide Page 48/110 MiCOM P921-P922-P923 10.6 Frequency protection (MiCOM P922 and P923) 10.6.1 Description The principle of measurement of frequency is based in general on the measurement of time every cycle, thus a new measurement is started at each voltage zero crossing.
  • Page 127 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 49/110 Description : setting of the 3 stage [81] F3= Range : from "fn – 10Hz" to "fn + 10Hz" 50.0 Hz Description : time delay setting [81] tF3= Range : from 0 to 599s, step = 0.01s...
  • Page 128 P92x/EN FT/E11 Technical Guide User Guide Page 50/110 MiCOM P921-P922-P923 10.7 Rate of change of frequency (MiCOM P923 only) The calculation of the rate of change of frequency is an average measurement of the instantaneous values over a programmable number of cycles (1 to 200) ; refer to the "CONFIGURATION"...
  • Page 129 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 51/110 Description : configuration of the 4 stage [81R] df/dt4 = Range : YES/NO Description : setting of the 4 stage [81R] df/dt4 = Range : [ – 10Hz/s to + 10Hz/s], step = 0.1 1.0 Hzs...
  • Page 130 P92x/EN FT/E11 Technical Guide User Guide Page 52/110 MiCOM P921-P922-P923 10.7.2 df/dt functionning P0399ENa FIGURE 2 The rates of change of frequency are calculated every cycle based upon the frequency values being insensitives to vector shifts, phase jumps and harmonics.
  • Page 131 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 53/110 P0400ENa FIGURE 3 CONFIGURATION Menu : After the first three instantaneous df/dt values, the first average value will be calculated (fig.2). This average df/dt: CYCLE NB= value will be compared to the threshold of the df/dt in...
  • Page 132 P92x/EN FT/E11 Technical Guide User Guide Page 54/110 MiCOM P921-P922-P923 P0401ENa CONFIGURATION Menu: df/dt: CYCLE NB= If both df/dt average1 and df/dt average2 exceed the threshold of the first element of df/dt in the protection Menu,then the protection will opeate...
  • Page 133 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 55/110 CONTROL FUNCTIONS To gain access to the “AUTOMAT.CTRL” menu from the default display, press 2 once and 6 5 times. The accessible sub-menus are then indicated below : AUTOMAT. CTRL...
  • Page 134 Page 56/110 MiCOM P921-P922-P923 11.1.1 MiCOM P921 - P922 and P923 : common information To gain access to the “AUTOMAT.CTRL” menu from the default display, press 2 once, 6 5 times (P921) or 6 times (P922 and P923) and 2 once.
  • Page 135 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 57/110 Description : selection of the “B” logic equation result, which TRIP EQUATION B = will be sent to the RL1 output contact Range : YES/NO 11.1.2 Additional information for the MiCOM P922 – MiCOM P923 relay Description : selection of the time-delayed information “tV2>”,...
  • Page 136 P92x/EN FT/E11 Technical Guide User Guide Page 58/110 MiCOM P921-P922-P923 11.1.3 Additional information for the MiCOM P923 relay Description : selection of the 1 stage of rate of change of TRIP df/dt1= frequency, which will be sent to RL1 output contact...
  • Page 137 MiCOM P921-P922-P923 Page 59/110 11.2.2 MiCOM P921-MiCOM P922 and P923 : common information To gain access to the “AUTOMAT.CTRL” menu from the default display, press 2 once, 6 5 times(P921) or 6 times(P922 and P923), 2 once and 6 once.
  • Page 138 P92x/EN FT/E11 Technical Guide User Guide Page 60/110 MiCOM P921-P922-P923 Description : selection of the result of the “B” logic equation, LATCH EQUATION B = which will be latched. Range : YES/NO 11.2.3 Additional information for the MiCOM P922 and P923 relay Description : selection of the time-delayed information “tV2>”,...
  • Page 139 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 61/110 11.2.4 Additional information for the MiCOM P923 Description : selection of the 1 stage of the rate of change of LATCH df/dt1 = frequency, which will be latched. Range : YES/NO...
  • Page 140 (P121 or P122 for example) wired onto blocking inputs of upstream relays (P921, P922 or P923 for example). In the MiCOM P921 or P922-P923, the “BLOCKING LOGIC1 t” and “BLOCKING LOGIC2 t” sub-menus allow the user to select time-delayed information, which will be blocked by a dedicated logic input (see “INPUTS”...
  • Page 141 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 63/110 Description : selection of the time-delayed information BLOCK1 tV0>>>= “tV0>>>”, which will be blocked by energisation of the “BLK LOG1” logic input. Range : YES/NO Description : selection of the time-delayed information BLOCK1 tAUX1 = “tAUX1”, which will be blocked by energisation of the “BLK...
  • Page 142 P92x/EN FT/E11 Technical Guide User Guide Page 64/110 MiCOM P921-P922-P923 11.3.4 Additional information for the MiCOM P923 Description : selection of the 1 stage of the rate of change of BLOCK1 df/dt1 = frequency which will be blocked by energisation of the "BLK LOG1"...
  • Page 143 (RL2 to RL8) which are used to duplicate the trip output will be latched. 11.5.2 MiCOM P921, MiCOM P922 and P923: common information To gain access to the “AUX OUTPUT RLY” sub-menu from the default display, press 2 once, 6 5 times(P921) or 6 times(P922 and P923), 2 once and 6 4 times.
  • Page 144 P92x/EN FT/E11 Technical Guide User Guide Page 66/110 MiCOM P921-P922-P923 Description : allocation of the “V<<<” information to the V<<< : 8765432 output contacts Range : 0 or 1 for each output contact 0000000 Description : allocation of the “tV<<<” information to the tV<<<...
  • Page 145 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 67/110 Description : allocation of the “tAUX1” information to the tAUX1 : 8765432 output contacts Range : 0 or 1 for each output contact 0000000 Description : allocation of the “tAUX2” information to the...
  • Page 146 P92x/EN FT/E11 Technical Guide User Guide Page 68/110 MiCOM P921-P922-P923 Description : allocation of the “F1”information to the output 8765432 contacts Range : 0 or 1 for each output contact 0000000 Description : allocation of the “tF1”information to the output...
  • Page 147 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 69/110 Description : allocation of the “ACTIVE GROUP”information to ACTIVE : 8765432 the output contacts Range : 0 or 1 for each output contact GROUP 0000000 11.5.4 Additional information for MiCOM P923 only Description : allocation of the “df/dt1”information to the output...
  • Page 148 5 key. Select the configuration (YES or NO) with 2 and 8 keys. Validate with the 5 key. 11.6.2 MiCOM P921, MiCOM P922 and P923 : common information To gain access to the "LATCH OUTPUT RELAYS" submenu from the default display, press 2 once, 6 5 times (P921) or 6 times (P922 or P923), 2 once and 6 5 times.
  • Page 149 "AND LOGIC EQUATION" Menu 11.7.1 Description Two logical gates (“AND”) are available in the MiCOM P921 and P922 relays and four are available in the MiCOM P923. In order to assign one information to one logic equation, please go to the relevant cell corresponding to the selected information, press then the 5 key.
  • Page 150 P92x/EN FT/E11 Technical Guide User Guide Page 72/110 MiCOM P921-P922-P923 Description : allocation of the instantaneous information V>> : “V>>” to the logic equations (A and/or B). Range : 0 or 1 for each selected equation Description : allocation of the time-delayed information tV>>...
  • Page 151 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 73/110 11.7.3 Additional information for the MiCOM P922 relay Description : allocation of the instantaneous information V2> : “V2>” to the logic equations (A and/or B). Range : 0 or 1 for each selected equation Description : allocation of the time-delayed information “tV2>”...
  • Page 152 P92x/EN FT/E11 Technical Guide User Guide Page 74/110 MiCOM P921-P922-P923 Description : allocation of the instantaneous information “F4” F4 : to the logic equations (A and/or B) Range : 0 or 1 for each selected equation Description : allocation of the time-delayed information “tF4”...
  • Page 153 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 75/110 Description : allocation of the time-delayed information tV<<< : DCBA “tV<<<” to the logic equations (A and/or B and/or C and/or D) Range : 0 or 1 for each selected equation 0000 Description : allocation of the instantaneous information “V>”...
  • Page 154 P92x/EN FT/E11 Technical Guide User Guide Page 76/110 MiCOM P921-P922-P923 Description : allocation of the time-delayed information “tV2>” tV2> : DCBA to the logic equations (A and/or B and/or C and/or D) Range : 0 or 1 for each selected equation...
  • Page 155 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 77/110 Description : allocation of the time-delayed information “tF4” tF4 : DCBA to the logic equations (A and/or B and/or C and/or D) Range : 0 or 1 for each selected equation 0000 Description : allocation of the instantaneous information “F5”...
  • Page 156 P92x/EN FT/E11 Technical Guide User Guide Page 78/110 MiCOM P921-P922-P923 Description : allocation of the information “CB FAIL” to the CB FAIL : DCBA logic equations (A and/or B and/or C and/or D). Range : 0 or 1 for each selected equation 0000 11.7.5 Example of configuration...
  • Page 157 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 79/110 11.8 "T DELAY EQUATION" Menu 11.8.1 Description For each logic equation, two independent timers are available : one pick-up timer and one drop-off timer. The principle of these timers is indicated on the scheme below : "A"...
  • Page 158 P92x/EN FT/E11 Technical Guide User Guide Page 80/110 MiCOM P921-P922-P923 11.8.3 Additional information for the MiCOM P923 Description : setting of the pick-up timer for the “C” logic EQU. C Toperat= equation Range : 0 – 3600s, step = 0,1s 0.0 s...
  • Page 159 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 81/110 11.9 "INPUTS" Menu 11.9.1 Description This sub-menu makes it possible to allocate each logic input to one specified function. It is possible to configure the operation of the digital input, either on falling edge/low level,or on rising edge/high level.
  • Page 160 Page 82/110 MiCOM P921-P922-P923 11.9.2 MiCOM P921 and MiCOM P922 : common information To gain access to the “INPUTS” sub-menu from the default display, press once 2, 5 times 6 (P921) or 6 times (P922 or P923), once 2 and 8 times 6.
  • Page 161 This sub-menu makes it possible to validate the circuit breaker supervision and monitoring functions, and the various settings associated to these functions. In the MiCOM P921 – P922 and P923 relays, the control of the circuit breaker can be done : ·...
  • Page 162 Note : only for MiCOM P922 – MiCOM P923 Description : Duration of the close pulse CLOSE PULSE TIME Range : 0.1 – 5s, step = 0.05s Note : common to MiCOM P921 – MiCOM P922 and 150 ms MiCOM P923 Description : Duration of the trip pulse TRIP PULSE TIME Range : 0.1 –...
  • Page 163 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 85/110 RECORDS FUNCTIONS (ONLY MiCOM P922 AND P923) To gain access to the “RECORDS” sub-menu from the default display, press once 2 and once 4. The accessible sub-menus are indicated below :...
  • Page 164 P92x/EN FT/E11 Technical Guide User Guide Page 86/110 MiCOM P921-P922-P923 12.2 "FAULT RECORD" Menu Fault records are stored in the non-volatile memory with the time of the fault to the accuracy of 1 ms. A total of 5 such latest events are stored. In case of power supply failure, this information is saved in the backup lithium battery.
  • Page 165 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 87/110 Description : magnitude of the phase C voltage at the instant VC MAGNITUDE of the fault (or Vca according to the connection scheme) Note : read only, no modifications allowed.
  • Page 166 P92x/EN FT/E11 Technical Guide User Guide Page 88/110 MiCOM P921-P922-P923 12.4 "TIME PEAK VALUE" Menu This sub-menu makes it possible to set the period of time which will be used to calculate average and maximum values. To gain access to the “TIME PEAK VALUE” sub-menu from the default display,press 2 once, 4 once, 2 once and 6 3 times Heading of the “TIME PEAK VALUE”...
  • Page 167 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 89/110 DISPLAY OF ALARMS The presence of one or more alarm messages will be indicated by the default display and by the yellow alarm LED flashing. Alarms The alarm messages can either be self-resetting or latched, in which case they must be cleared manually.
  • Page 168 Technical Guide User Guide Page 90/110 MiCOM P921-P922-P923 The list of all electrical alarms and their significance are indicated in the table below : MiCOM P921, MiCOM P922 and MiCOM P923 : common alarms Alarms Significance V> stage instantaneous overvoltage information tV>...
  • Page 169 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 91/110 Additional alarms for the MiCOM P922 and MiCOM P923 relay : Alarm Significance frequency stage : instantaneous information frequency stage : time-delayed information frequency stage : instantaneous information frequency stage : time-delayed information...
  • Page 170 P92x/EN FT/E11 Technical Guide User Guide Page 92/110 MiCOM P921-P922-P923 Additional alarms for the MiCOM P923 : Alarm Significance df/dt1 stage of the rate of change of frequency information df/dt2 stage of the rate of change of frequency information df/dt3...
  • Page 171 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 93/110 Alarms can be classified as minor or major faults : · Minor fault : the protection functions of the relay are still active. The watchdog contact is in the “relay healthy” position.
  • Page 172 P92x/EN FT/E11 Technical Guide User Guide Page 94/110 MiCOM P921-P922-P923 P922 P921 P923 OP PARAMETERS OP PARAMETERS OP PARAMETERS CONFIGURATION CONFIGURATION CONFIGURATION 2 6 2 2 6 2 2 6 2 GENERAL GENERAL GENERAL 2 6 2 6 2 6 2 6...
  • Page 173 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 95/110...
  • Page 174 P92x/EN FT/E11 Technical Guide User Guide Page 96/110 MiCOM P921-P922-P923...
  • Page 175 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 97/110...
  • Page 176 P92x/EN FT/E11 Technical Guide User Guide Page 98/110 MiCOM P921-P922-P923...
  • Page 177 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 99/110...
  • Page 178 P92x/EN FT/E11 Technical Guide User Guide Page 100/110 MiCOM P921-P922-P923...
  • Page 179 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 101/110...
  • Page 180 P92x/EN FT/E11 Technical Guide User Guide Page 102/110 MiCOM P921-P922-P923...
  • Page 181 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 103/110...
  • Page 182 P92x/EN FT/E11 Technical Guide User Guide Page 104/110 MiCOM P921-P922-P923...
  • Page 183 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 105/110...
  • Page 184 P92x/EN FT/E11 Technical Guide User Guide Page 106/110 MiCOM P921-P922-P923...
  • Page 185 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 107/110...
  • Page 186 P92x/EN FT/E11 Technical Guide User Guide Page 108/110 MiCOM P921-P922-P923...
  • Page 187 Technical Guide P92x/EN FT/E11 User Guide MiCOM P921-P922-P923 Page 109/110...
  • Page 188 P92x/EN FT/E11 Technical Guide User Guide Page 110/110 MiCOM P921-P922-P923...
  • Page 189 Technical Guide P92x/EN CT/E11 MiCOM P921-P922-P923 Communications Modbus Mapping Courier Database IEC 60870-5-103...
  • Page 191 Modbus request definition used to retrieve the fault records 1.6.1 Request to retrieve the oldest non-acknowledge fault record 1.6.2 Request to retrieve a dedicated fault record MiCOM P921-P922-P923 database organisation 1.7.1 Description of the MODBUS application mapping 1.7.2 Page 0 : Product information, remote signalling and remote measurements 1.7.3...
  • Page 192 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 2/118 MiCOM P921-P922-P923 1.7.5 Page 3 : Protective functions - Remote settings for group 2. 1.7.5.1 Undervoltage protection (P922 and P923) 1.7.5.2 Overvoltage protection (P922 and P923) 1.7.5.3 Zero sequence overvoltage protection (P922 and P923) 1.7.5.4 Negative sequence overvoltage protection (P922 and P923)
  • Page 193 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 3/118 Setting Changes Systems Integration Data 2.4.1 Address of the relay 2.4.2 Measured Values 2.4.3 Status word 2.4.4 Unit Status word 2.4.5 Control status word 2.4.6 Logic Input status word 2.4.7 Output Relay Status word 2.4.8...
  • Page 194 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 4/118 MiCOM P921-P922-P923 PROCESSED COMMANDS System Commands General Commands (ASDU 20) (Control direction) RELAY RE-INITIALIZATION CYCLIC MESSAGES (ASDU 9 AND ASDU 77)
  • Page 195 MODBUS communication characteristics 1.1.1 MODBUS network characteristics The MODBUS protocol is based on the master-slave principle with the MiCOM P921 or P922-P923 relay as slave. The MODBUS protocol allows the master to read and to write one or several bits, one or several words and to remote the event logging data.
  • Page 196 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 6/118 MiCOM P921-P922-P923 1.1.2 Parameters of the MODBUS connection The different parameters of the MODBUS connection are as follows : Isolated two-point RS485 connection (2kV 50Hz). MODBUS line protocol in RTU mode. The baud rate can be configurated by operator dialogue in the front panel of...
  • Page 197 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 7/118 1.1.5 Address of the MiCOM relays The address of the MiCOM relay on a same MODBUS network is situated between 1 and 255. The address 0 is reserved for the broadcast messages.
  • Page 198 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 8/118 MiCOM P921-P922-P923 1.3.2 Format of frames sent by the MiCOM P92x relay Frame sent by the MiCOM relay (response) : Slave number Function code Data CRC16 1 byte 1 byte n bytes...
  • Page 199 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 9/118 Error code : Among the 8 exception codes of the MODBUS protocol, the MiCOM relay manages two of them : · code 01 : Function code unauthorised or unknown. ·...
  • Page 200 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 10/118 MiCOM P921-P922-P923 1.4.2 Service request This request shall be send before to retrieve the sample data of a disturbance record channel. It allows to specify the record number and the channel number which have to be retrieved.
  • Page 201 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 11/118 1.5.1 Request to retrieve the oldest non-acknowledge event Slave number Function code Word address Word number 36h 00 00 09h xx..xx This event request may be answered an error message with the error code : EVT_EN_COURS_ECRIT (5) : An event is being written into the saved RAM.
  • Page 202 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 12/118 MiCOM P921-P922-P923 1.6.1 Request to retrieve the oldest non-acknowledge fault record Slave number Function code Word address Word number 3Eh 00 00 0Fh xx..xx NOTA : On fault retrieval, two possibilities exist regarding the fault record acknowledgement: a) Automatic fault record acknowledgement on event retrieval.
  • Page 203 1.7.1 Description of the MODBUS application mapping Pages 0 to 8 : Contain the MiCOM P921-P922-P923 parameters. Pages 9 to 3Dh : Contain the data of the event records, data of the fault value records, and data of the disturbance records, these pages are only available for MiCOM P922 and P923.
  • Page 204 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 14/118 MiCOM P921-P922-P923 1.7.2 Page 0 : Product information, remote signalling and remote measurements Read only access Settings Default Address Group Description Step Unit Format range settings 0000 Product Description of the relay...
  • Page 205 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 15/118 Settings Default Address Group Description Step Unit Format range settings 001B Output information for 0 to FFFF threshold : V0>> 001C Output information for 0 to FFFF threshold : V0>>>...
  • Page 206 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 16/118 MiCOM P921-P922-P923 Product Default Address Group Description Settings range Step Unit Format settings P921 P922/ P923 0030 Measurements True RMS phase 0 to V/100 voltage VA 500 000 000 0032 True RMS phase...
  • Page 207 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 17/118 Settings Default Address Group Description Step Unit Format range settings 0060 Memorisation of the latched output relays (1) 0061 Reset of the latched output relays (1) 0062- Reserved 0063 0064...
  • Page 208 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 18/118 MiCOM P921-P922-P923 Settings Default Address Group Description Step Unit Format range settings 011F Latched relays Ratios 0120 Phase VT : 10 to 100000 10 V 2000 primary value 22 to 48 0122...
  • Page 209 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 19/118 Settings Default Address Group Description Step Unit Format range settings 0150 Leds Led 5 1st part configuration 0151 Led 6 1st part 0152 Led 7 1st part 0153 Led 8 1st part...
  • Page 210 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 20/118 MiCOM P921-P922-P923 Product Default Address Group Description Settings range Step Unit Format settings P921 P922/ P923 0170 Allocation of Trip 0 - 7 or the information 0 – 127 to the auxiliary...
  • Page 211 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 21/118 Product Default Address Group Description Settings range Step Unit Format settings P921 P922/ P923 0188 tV1< 0 - 7 or 0 - 127 0189 tV1<< 0 - 7 or 0 - 127...
  • Page 212 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 22/118 MiCOM P921-P922-P923 Product Default Address Group Description Settings range Step Unit Format settings P921 P922/ P923 01A2 Allocation of tV< 0 - 3 the information to the Logic 0 - 15 equations 01A3 tV<<...
  • Page 213 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 23/118 Product Default Address Group Description Settings range Step Unit Format settings P921 P922/ P923 01BB 0 - 3 or 0 - 15 01BC 0 - 3 or 0 - 15...
  • Page 214 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 24/118 MiCOM P921-P922-P923 Product Default Address Group Description Settings range Step Unit Format settings P921 P922/ P923 01D6 Blocking logic 2 0 to 1FFF 01D7 Blocking logic 2 0 to 3FF or (end)
  • Page 215 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 25/118 1.7.4 Page 2 : Protective functions - Remote settings for group 1. 1.7.4.1 Undervoltage protection (P921- P922 and P923) Settings Default Address Group Description Step Unit Format range settings 0200 Setting group V<...
  • Page 216 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 26/118 MiCOM P921-P922-P923 1.7.4.2 Overvoltage protection (P921 -P922 and P923) Settings Default Address Group Description Step Unit Format range settings 0230 V> configuration 0231 Threshold V> 50 to 2000 V/10 1300 or 4800...
  • Page 217 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 27/118 1.7.4.3 Zero sequence overvoltage protection (P921- P922 and P923) Settings Default Address Group Description Step Unit Format range settings 0260 Vo> configuration 0261 Threshold Vo> 5 to 1300 V/10 20 to...
  • Page 218 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 28/118 MiCOM P921-P922-P923 1.7.4.4 Negative sequence overvoltage protection (P922- P923) Settings Default Address Group Description Step Unit Format range settings 0290 V2> configuration 0291 Threshold V2> 50 to 2000 V/10 1300 200 to 7200...
  • Page 219 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 29/118 1.7.4.6 Under/overfrequency (P922 – P923) Settings Default Address Group Description Step Unit Format range settings 02D0 02D1 Threshold f1 4000 to 6000 1/100 Hz F1 5000 or if fn= 50Hz...
  • Page 220 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 30/118 MiCOM P921-P922-P923 Settings Default Address Group Description Step Unit Format range settings 02E9 df/dt4 threshold -100 to 100 1/10 Hz/s 02EA df/dt5 02EB df/dt5 threshold -100 to 100 1/10 Hz/s 02EC df/dt6...
  • Page 221 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 31/118 1.7.5.2 Overvoltage protection (P922 and P923) Settings Default Address Group Description Step Unit Format range settings 0330 V> configuration 0331 Threshold V> 50 to 2000 V/10 1300 200 to 7200...
  • Page 222 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 32/118 MiCOM P921-P922-P923 Settings Default Address Group Description Step Unit Format range settings 0381 Threshold Vo>>> 5 to 1300 V/10 20 to 4800 0382 Vo>>> temporisation 0 to 59999 1/100 s 0383 to...
  • Page 223 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 33/118 1.7.5.5 Positive sequence undervoltage protection (P922 and P923) Settings Default Address Group Description Step Unit Format range settings 03B0 V1< configuration 03B1 Threshold V1< 50 to 1300 1 or 5 V/10...
  • Page 224 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 34/118 MiCOM P921-P922-P923 1.7.5.6 Under/overfrequency protection (P922 and P923) Settings Default Address Group Description Step Unit Format range settings 03D0 03D1 Threshold f1 4000 to 6000 1/100 Hz F1 5000 or if fn= 50Hz...
  • Page 225 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 35/118 1.7.5.7 Rate of change of frequency ( Only MiCOM P923) Settings Default Address Group Description Step Unit Format range settings 03E2 df/dt1 03E3 df/dt1 threshold -100 to 100 1/10 Hz/s...
  • Page 226 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 36/118 MiCOM P921-P922-P923 1.7.9 Page 8 : Time synchronisation Time synchronisation : access in writing for n words (function 16). The time synchronisation format is based on 8 bits (4 words). Timer @page...
  • Page 227 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 37/118 1.7.10 Page 9 to 21h : Disturbance records data (25 pages) (MiCOM P922 and P923 only) Disturbance records data (25 pages). Access in words writing, each disturbance mapping page contains 250 words.
  • Page 228 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 38/118 MiCOM P921-P922-P923 N.B. : - The disturbance data pages contain values of one channel from one given disturbance record. - significance of the value according to the type of channel : = 16 bits values...
  • Page 229 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 39/118 1.7.11 Page 22h : Disturbance record index frame (MiCOM P922 and P923 only) Read access only. Address Contents Format 2200h Disturbance data index frame 1.7.12 Page 35h : Events record (MiCOM P922 and P923 only) Read access only.
  • Page 230 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 40/118 MiCOM P921-P922-P923 1.7.14 Page 37h : 5 last fault records data (MiCOM P922 and P923 only) Read access only. Address Contents Format 3700h Fault record values n°1 3701h Fault record values n°2 3702h Fault record values n°3...
  • Page 231 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 41/118 Disturbance record Address Channel Format number 3C00h 3C01h 3C02h 3C03h 3C04h Frequency 3C05h Logic input and outputs 1.7.16 Page 3Dh : Number of disturbance records available (MiCOM P922 and P923 only) Read access only.
  • Page 232 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 42/118 MiCOM P921-P922-P923 1.7.19 Page 41h: selection of Frequency Disturbance Record and channel (MiCOM P923 only). Read access only Address Contents Format 4100h Average Va Vb Vc 4101h Measured period 4102h Logic inputs/outputs...
  • Page 233 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 43/118 1.7.21 Page 4Ah: Frequency Disturbance Record Frame index and acknowledgment (MiCOM P923 only). Read access only Address Contents Format 4A00h Freq disturbance record frame index and acknowledgement...
  • Page 234 Unsigned integer : selection of the information assigned to the trip output (RL1) and of the information latched to the other output contacts (RL2 to RL4 for MiCOM P921, RL2 to RL8 for MiCOM P922- P923). bit 0 : tV<...
  • Page 235 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 45/118 PRODUCTS CODE DESCRIPTION P921 P922 P923 Unsigned integer : selection of the information assigned to the trip output (RL1) and of the information latched to the other output contacts. Selection of the information which is blocked by the blocking logic (1 or 2) bit 0 :tV2>...
  • Page 236 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 46/118 MiCOM P921-P922-P923 PRODUCTS CODE DESCRIPTION P921 P922 P923 Unsigned integer : Remote commands bit 0 : Tripping contact delatched (RL1) bit 1 : 1 st alarm acknowledgement bit 2 : All alarms acknowledgement...
  • Page 237 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 47/118 PRODUCTS CODE DESCRIPTION P921 P922 P923 bit 7 : logic output number RL7 bit 8 : logic output number RL8 bits 9 to 15 : reserved Unsigned integer : logic outputs configuration (excepted...
  • Page 238 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 48/118 MiCOM P921-P922-P923 PRODUCTS CODE DESCRIPTION P921 P922 P923 Unsigned integer : Information generated by the overvoltage function bit 0 : instantaneous information (V>) or (V>>) or (V>>>) bit 1 : instantaneous information VA...
  • Page 239 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 49/118 PRODUCTS CODE DESCRIPTION P921 P922 P923 F19' Unsigned long integer: LED configuration (cont.) Bit 0 : Vo>>> Bit 1 : tVo>>> Bit 2 : taux1 Bit 3 : taux2 Bit 4 : V2>...
  • Page 240 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 50/118 MiCOM P921-P922-P923 PRODUCTS CODE DESCRIPTION P921 P922 P923 Unsigned integer : Logic input status bit 0 : Blocking logic 1 (BLK LG1) bit 1 : Blocking logic 2 (BLK LG2) bit 2 : Unlatched of the output contacts...
  • Page 241 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 51/118 PRODUCTS CODE DESCRIPTION P921 P922 P923 Selection of the default display 1 : RMS value Va or Vab 2 : RMS value Vb or Vbc 3 : RMS value Vc or Vca...
  • Page 242 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 52/118 MiCOM P921-P922-P923 PRODUCTS CODE DESCRIPTION P921 P922 P923 Unsigned integer : Latch of auxiliary output relays bit 0 : selection of the auxiliary output relay no 2 bit 1 : selection of the auxiliary output relay no 3...
  • Page 243 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 53/118 PRODUCTS CODE DESCRIPTION P921 P922 P923 Bit 8 : instantaneous information f5 Bit 9 : time delayed information f5 Bit 10 : instantaneous information f6 Bit 11 : time delayed information f6...
  • Page 244 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 54/118 MiCOM P921-P922-P923 PRODUCTS CODE DESCRIPTION P921 P922 P923 Unsigned integer : MiCOM relay status Bit 0 : Watchdog Bit 1 : Communication failure Bit 2 : EEPROM data failure Bit 3 : Analog failure...
  • Page 245 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 55/118 PRODUCTS CODE DESCRIPTION P921 P922 P923 Bit 6 : instantaneous information threshold V1< Bit 7 : instantaneous information V1< Bit 8 : time delayed information V1< Bit 9 : instantaneous information threshold V1<<...
  • Page 246 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 56/118 MiCOM P921-P922-P923 PRODUCTS CODE DESCRIPTION P921 P922 P923 Unsigned integer : Configuration of the under/overvoltage thresholds 0 : Disabled 1 : "OR" detection 2 : "AND" detection Unsigned integer : Configuration of the frequency...
  • Page 247 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 57/118 Specific formats for the records files (P922 and P923 only) CODE DESCRIPTION Conversion rules for the voltage values of the disturbance record * In order to obtain the phase voltages values at the VT primary, apply the following formula : «...
  • Page 248 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 58/118 MiCOM P921-P922-P923 CODE DESCRIPTION Fault record data word : Fault record number word : Fault date (sec) : second number since 01/01/94 word : Fault date (sec) : second number since 01/01/94...
  • Page 249 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 59/118 CODE DESCRIPTION Data for the available disturbance records word : Number of disturbance record available word : Oldest disturbance record number word : Oldest disturbance record date (sec) word : Oldest disturbance record date (sec)
  • Page 250 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 60/118 MiCOM P921-P922-P923 Address Cellule CODE DESCRIPTION Type Modbus Courier Code of event and type of the associated value "No event" "Remote closing" 013H "Remote tripping" 013H "Start of disturbance record" "Trip output unlatched"...
  • Page 251 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 61/118 Address Cellule CODE DESCRIPTION Type Modbus Courier "trip : tV >>" 013H "trip : tV >>>" 013H "trip : tV <" 013H "trip : tV <<" 013H "trip : tV <<<"...
  • Page 252 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 62/118 MiCOM P921-P922-P923 Address Cellule CODE DESCRIPTION Type Modbus Courier "tf2" 01FH­¯ "tf3" 020H­¯ "tf4" 021H­¯ "tf5" 022H­¯ "tf6" 023H­¯ "Frequency out of range" 024H­¯ "CB operating time" 024H­¯ "Number of operations" 024H­¯...
  • Page 253 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 63/118 Address Cellule CODE DESCRIPTION Type Modbus Courier “trip: df/dt5” 013H “trip: df/dt6” 013H “Latch of the relays “ 060H N.B. : The double arrow means the event is generated on event ­¯...
  • Page 254 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 64/118 MiCOM P921-P922-P923 CODE DESCRIPTION "Trip output contact for : tV1<<" "Trip output contact for : tf1" "Trip output contact for : tf2" "Trip output contact for : tf3" "Trip output contact for : tf4"...
  • Page 255 Technical Guide P92x/EN CT/E11 Modbus Protocol MiCOM P921-P922-P923 Page 65/118 Specific formats for the frequency disturbance records files (P923 only) 1.10 CODE DESCRIPTION Stauts Frame of the frequency disturbance record 1st Word: Flag of Presence of the frequency disturbance (0: absent , 1: present , 2 under recording).
  • Page 256 P92x/EN CT/E11 Technical Guide Modbus Protocol Page 66/118 MiCOM P921-P922-P923 CODE DESCRIPTION Conversion rules for the voltage values of the frequency disturbance record * In ordre to obtain the phase voltages values at the VT primary, apply the following formula: “Read value”...
  • Page 257 Technical Guide P92x/EN CT/E11 Courier Database MiCOM P921-P922-P923 Page 67/118 Courier Database...
  • Page 258 P92x/EN CT/E11 Technical Guide Courier Database Page 68/118 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 259 Technical Guide P92x/EN CT/E11 Courier Database MiCOM P921-P922-P923 Page 69/118 K-BUS PROTOCOL AND COURIER LANGUAGE The serial communications are transmitted on K-Bus, a multi –drop network proposing an instantaneous interface with the IEC 870-5 FT1.2 standards. language and the communication protocol used are Courier. this concept permits...
  • Page 260 P92x/EN CT/E11 Technical Guide Courier Database Page 70/118 MiCOM P921-P922-P923 2.1.3 Auxiliary equipment For communication with the relay it is necessary to have at least one converter case K-Bus/IEC870-5 of the type KITZ and a computer suitable software, an interconnection cable RS232 for connecting the KITZ to the computer and a software conform to the specification of the Courier protocol.
  • Page 261 Technical Guide P92x/EN CT/E11 Courier Database MiCOM P921-P922-P923 Page 71/118 2.2.2 List of events generated by the relay MiCOM P922 and P923 Associated Code Event text Description COURIER cell 0001 TC CLOSE Close by TC 0021 0002 TC TRIP Trip by TC...
  • Page 262 P92x/EN CT/E11 Technical Guide Courier Database Page 72/118 MiCOM P921-P922-P923 Associated Code Event text Description COURIER cell 0035 TRIP t V> Trip t V> 0036 TRIP t V>> Trip t V>> 0037 TRIP t V>>> Trip t V>>> 0038 TRIP t V<...
  • Page 263 Technical Guide P92x/EN CT/E11 Courier Database MiCOM P921-P922-P923 Page 73/118 Associated Code Event text Description COURIER cell 0070 t F2 Trip F2 0024 0071 t F3 Trip F3 0024 0072 t F4 Trip F4 0025 0073 t F5 Trip F5...
  • Page 264 P92x/EN CT/E11 Technical Guide Courier Database Page 74/118 MiCOM P921-P922-P923 Associated Code Event text Description COURIER cell 0105 TRIP : t dF / dT 4 Trip t df / dt 4 0106 TRIP : t dF / dT 5 Trip t df / dt 5...
  • Page 265 The unit status word is located in the menu 000C Each bits pair of the unit status word serves to indicate the status (position ) of the unit elements checked through the relay. This functionality is not supported on MiCOM P921,P922 and P923 relays. 2.4.5 Control status word...
  • Page 266 P92x/EN CT/E11 Technical Guide Courier Database Page 76/118 MiCOM P921-P922-P923 2.4.6 Logic Input status word The logic control input status can be observed in proceeding to a selective call from the cell of menu 0020. The 2 bits inferior of the returned value indicating the status of each of the 2 logic inputs.
  • Page 267 Technical Guide P92x/EN CT/E11 Courier Database MiCOM P921-P922-P923 Page 77/118 The following table presents the list of the protection indications of the cell 0023: Bit Position Protection Function U< U<< U<<< U> U>> U>>> V0> V0>> tU< tU<< tU<<< tU>...
  • Page 268 P92x/EN CT/E11 Technical Guide Courier Database Page 78/118 MiCOM P921-P922-P923 Bit Position Protection Function V2> V2>> V1< V1<< tV2> tV2>> tV1< tV1<< t Equ 3 t Equ 4 The following table presents the list of the protection indications of the cell 0026:...
  • Page 269 Technical Guide P92x/EN CT/E11 Courier Database MiCOM P921-P922-P923 Page 79/118 NOTE : The control commands are generally materialized by the change of the cell value. They dispose the same inherent security. No response is allowed for the global orders to avoid any conflict in the bus.
  • Page 270 P92x/EN CT/E11 Technical Guide Courier Database Page 80/118 MiCOM P921-P922-P923 2.5.3 Event Format The Send Event Command results in the return of the following fields by the relay: · Cell Reference Time stamp · · Cell text Cell value ·...
  • Page 297 Technical Guide P92x/EN CT/E11 IEC 60870-5-103 MiCOM P921-P922-P923 Page 107/118 IEC 60870-5-103...
  • Page 298 P92x/EN CT/E11 Technical Guide IEC 60870-5-103 Page 108/118 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 299 The following information will be contained in the data section of this ASDU: Manufacturer Name : AREVA The Software Identification Section will contain the first four characters of the relay model number to identify the type of relay, e.g. P923.
  • Page 300 Technical Guide IEC 60870-5-103 Page 110/118 MiCOM P921-P922-P923 Time Synchronization (P922 & P932 only) The relay time and date can be set using the time synchronization feature of the IEC60870-5-103 protocol. The relay will correct the transmission delay as specified in the IEC60870-5-103.
  • Page 301 Technical Guide P92x/EN CT/E11 IEC 60870-5-103 MiCOM P921-P922-P923 Page 111/118 Disturbance Records (P922 & P923 only) The disturbance records stored by the relay can not be extracted using the mechanism defined in the IEC60870-5-103 standard. The relay maintains compatibility with the VDEW control system by transmitting an ASDU 23 with no disturbance records at the start of every GI cycle.
  • Page 302 P92x/EN CT/E11 Technical Guide IEC 60870-5-103 Page 112/118 MiCOM P921-P922-P923 APPENDIX 2 IEC 60870-5-103 DATABASES An event is always generated on the rising edge of the information. Some events can be generated on the rising or lowering edge. In the list below, events only generated on rising edge will be tagged with a ‘*’.
  • Page 303 Technical Guide P92x/EN CT/E11 IEC 60870-5-103 MiCOM P921-P922-P923 Page 113/118 Fault Indications (monitor direction) : Start U> : INF <64>; TYP <2>; COT<1>, Start U>> : INF <65>; TYP <2>; COT<1>, Start U>>> : INF <66>; TYP <2>; COT<1>, Start V0> : INF <67>;...
  • Page 304 P92x/EN CT/E11 Technical Guide IEC 60870-5-103 Page 114/118 MiCOM P921-P922-P923 Trip F1 : INF <113>; TYP <2>; COT<1>,* Start F2 : INF <114>; TYP <2>; COT<1>, Trip F2 : INF <115>; TYP <2>; COT<1>,* Start F3 : INF <116>; TYP <2>; COT<1>, Trip F3 : INF <117>;...
  • Page 305 Technical Guide P92x/EN CT/E11 IEC 60870-5-103 MiCOM P921-P922-P923 Page 115/118 Logical input 4 : INF <164>; TYP <1>; COT<9> Logical input 5 : INF <165>; TYP <1>; COT<9> Logical output 1 : INF <176>; TYP <1>; COT<9> Logical output 2 : INF <177>;...
  • Page 306 P92x/EN CT/E11 Technical Guide IEC 60870-5-103 Page 116/118 MiCOM P921-P922-P923 PROCESSED COMMANDS System Commands Synchronization Command (ASDU 6) : INF <0>, TYP <6>, COT<9> This command can be sent to a specific relay, or global, it only exists on the P922 and P923.
  • Page 307 Technical Guide P92x/EN CT/E11 IEC 60870-5-103 MiCOM P921-P922-P923 Page 117/118 RELAY RE-INITIALIZATION In case of relay re-initialization, the relay send to the master station : A message indicating relay start (INF <5>; TYP <5> COT <6>) An identification message of the relay (ASDU 5), which contains the manufacturer name in 8 ASCII characters et 4 free characters containing : «...
  • Page 308 P92x/EN CT/E11 Technical Guide IEC 60870-5-103 Page 118/118 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 309 Technical Guide P92x/EN IN/E11 MiCOM P921-P922-P923 Installation...

  • Page 311: Table Of Contents

    Technical Guide P92x/EN IN/E11 Installation MiCOM P921-P922-P923 Page 1/10 CONTENTS RECEIPT OF RELAYS HANDLING OF ELECTRONIC EQUIPMENT STOCKAGE UNPACKING RELAY MOUNTING Rack Mounting Panel Mounting RELAY WIRING Medium and Heavy Duty Terminal Block Connections RS485 Port Earth Connection...
  • Page 312 P92x/EN IN/E11 Technical Guide Installation Page 2/10 MiCOM P921-P922-P923 BLANK PAGE...

  • Page 313: Receipt Of Relays

    Upon receipt, relays should be examined immediately to ensure no external damage has been sustained in transit. If damage has been sustained, a claim should be made to the transport contractor and AREVA should be promptly notified.

  • Page 314: Stockage

    Technical Guide Installation Page 4/10 MiCOM P921-P922-P923 In the unlikely event that you are making measurements on the internal electronic circuitry of a relay in service, it is preferable that you are earthed to the case with a conductive wrist strap. Wrist straps should have a resistance to ground between 500kW to 10MW.

  • Page 315: Relay Mounting

    Technical Guide P92x/EN IN/E11 Installation MiCOM P921-P922-P923 Page 5/10 RELAY MOUNTING MiCOM relays are dispatched either individually or as part of a panel/rack assembly. Individual relays are normally supplied with an outline diagram showing the dimensions for panel cut-outs and hole centres. This information can also be found in the product publication.
  • Page 316 P92x/EN IN/E11 Technical Guide Installation Page 6/10 MiCOM P921-P922-P923 P0403XXa FIGURE 1 : RACK MOUNTING OF RELAYS Relays can be mechanically grouped into single tier (4U) or multi-tier arrangements by means of the rack frame. This enables schemes using products from the MiCOM and MiDOS product ranges to be pre-wired together prior to mounting.

  • Page 317: Panel Mounting

    Technical Guide P92x/EN IN/E11 Installation MiCOM P921-P922-P923 Page 7/10 Panel Mounting The relays can be flush mounted into panels using self-tapping screws passing through the front mounting flanges. Alternatively tapped holes can be used if the panel has a minimum thickness of 2.5 mm.
  • Page 318 Technical Guide P92x/EN IN/E11 Installation MiCOM P921-P922-P923 Page 9/10 It is recommended that the auxiliary supply wiring should be protected by a 16A high rupture capacity (HRC) fuse of type NIT or TIA. For safety reasons, current transformer circuits must never be fused. Other circuits should be appropriately fused to protect the wire used.
  • Page 319 P92x/EN IN/E11 Technical Guide Installation Page 10/10 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 320 Technical Guide P92x/EN CM/E11 MiCOM P921-P922-P923 Commissioning Guide...
  • Page 322 Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 1/28 CONTENTS INTRODUCTION SETTING FAMILIARISATION EQUIPMENT REQUIRED FOR COMMISSIONING Minimum equipment required Optional equipment PRODUCT CHECKS With the relay de-energised 4.1.1 Visual inspection 4.1.2 Insulation 4.1.3 On completion of the insulation resistance tests, ensure all external wiring is correctly reconnected to the relay.
  • Page 323 Testing the "Phase overvoltage protection" and "Phase undervoltage protection" functions 5.3.1 Wiring diagram 5.3.2 MiCOM P921-P922-P923 relay parameters 5.3.3 Configuration with 3 single voltages (“3Vpn”) and “AND” detection logic 5.3.3.1 Stages (V>) or (V<) with definite time delay 5.3.3.2 Stages (V>) or (V<) with inverse time delay 5.3.4...
  • Page 324 Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 3/28 FIGURES FIGURE 1 : REAR TERMINAL BLOCKS ON SIZE 20TE CASE TABLE 1 : WATCHDOG CONTACT STATUS TABLE 2 : OPERATIONAL RANGE OF AUXILIARY SUPPLY TABLE 3 : OPTO-ISOLATED INPUT TERMINALS...
  • Page 325 P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 4/28 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 326 MiCOM P921-P922-P923 Page 5/28 INTRODUCTION The MiCOM P921-P922-P923 protection relays are fully numerical in their design, implementing many protection and non-protection functions. The relays periodically conduct self-checking and, in the unlikely event of a failure, will trigger an alarm. As a result of this, the commissioning tests do not need to be as extensive as with non- numeric electronic or electro-mechanical relays.
  • Page 327 Page 6/28 MiCOM P921-P922-P923 SETTING FAMILIARISATION When commissioning a MiCOM P921, P922 or P923 relay for the first time, sufficient time should be allowed to become familiar with various menus containing the settings. The “User Guide” section (Chapter P92x/EN FT) of this technical guide gives a detailed description of the menu structures for the MiCOM P921, P922 and P923 relays.
  • Page 328 NOTE: In the event that the password has been lost, a recovery password can be obtained from AREVA by quoting the serial number of the relay. With the relay de-energised THE FOLLOWING GROUP OF TESTS SHOULD BE CARRIED OUT WITHOUT THE AUXILIARY SUPPLY BEING APPLIED TO THE RELAY AND WITH THE TRIP CIRCUIT ISOLATED.

  • Page 329: Relay Wiring

    If required, AREVA can supply M4 90° crimp ring terminals in five different sizes depending on wire size (see Table 3 and Table 4). Each type is available in bags of 100.

  • Page 330: Visual Inspection

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 8/28 MiCOM P921-P922-P923 4.1.1 Visual inspection Carefully examine the relay to see that no physical damage has occurred since installation. The rating information given under the top cover on the front of the relay should be checked to ensure it is correct for the particular installation.

  • Page 331: Insulation

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 9/28 4.1.2 Insulation Insulation resistance tests are only necessary during commissioning if it is required for them to be done and they haven’t been performed during installation. Isolate all wiring from the earth and test the insulation with an electronic insulation tester at a DC voltage not exceeding 500V.

  • Page 332: Auxiliary Supply

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 10/28 MiCOM P921-P922-P923 4.1.6 Auxiliary supply The relay can be operated from either a DC only or an AC/DC auxiliary supply depending on the relay’s nominal supply rating. The voltage must be within the operating range specified in Table 2.

  • Page 333: Light Emitting Diodes (Leds)

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 11/28 4.2.3 Light Emitting Diodes (LEDs) On power up the green LED should have illuminated and stayed on indicating that the relay is healthy. The relay has non-volatile memory which remembers the state (on or off) of the alarm and trip LEDs when the relay was last energised from an auxiliary supply.

  • Page 334: Output Relays

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 12/28 MiCOM P921-P922-P923 4.2.5 Output relays This test checks that all the output relays are functioning correctly. (4 output relays for the P921 and 8 output relays for the P922-P923). The output relays should be energised one at a time.

  • Page 335: Rear Communications Port

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 13/28 4.2.6 Rear communications port This test should only be performed where the relay is to be accessed from a remote location and will vary depending on the communications standard being adopted.

  • Page 336: Voltage Inputs

    This test verifies the accuracy of voltage measurement is within the acceptable tolerances. 4 types of connection are possible for the MiCOM P921, P922 and P923 relays: 3VT (phase-neutral), 3VT (phase-phase) + residual VT, 3VT (phase-neutral) + residual VT, 2VT (phase-phase) + residual VT.

  • Page 337: Setting Checks

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 15/28 SETTING CHECKS The setting checks ensure that all of the relay settings (i.e. the relay’s protection and control settings and programmable logic equations) for the particular installation have been correctly applied to the relay.

  • Page 338: Testing The "Phase Overvoltage Protection" And "Phase Undervoltage Protection" Functions

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 16/28 MiCOM P921-P922-P923 Testing the "Phase overvoltage protection" and "Phase undervoltage protection" functions 5.3.1 Wiring diagram Auxiliary power supply Watchdog Stop chrono MiCOM P92 * Auxiliary power supply Voltage source See note 3...

  • Page 339: Micom P921-P922-P923 Relay Parameters

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 17/28 5.3.2 MiCOM P921-P922-P923 relay parameters Note the settings of the MiCOM P921-P922-P923 relays in the tables below. [59] OVERVOLTAGE Default values Settings Group 1 Group 2 (P922-P923) stage activated...

  • Page 340: Configuration With 3 Single Voltages ("3Vpn") And "And" Detection Logic

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 18/28 MiCOM P921-P922-P923 5.3.3 Configuration with 3 single voltages (“3Vpn”) and “AND” detection logic Do not exceed a maximum voltage of 2xVn in the following tests. In view of the detection logic (“AND”), the voltages must be injected into the 3 phase inputs to cause tripping to occur.

  • Page 341: Stages (V>) Or (V<) With Inverse Time Delay

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 19/28 Time delay (tV>) check: Preset the injection voltage to a value equal to 2x(V>). Inject the voltage into the 3 phases simultaneously. Measure the time delay (tV>): it must be equal to the parametered value ±2% (or a minimum of ±20ms).

  • Page 342: Under/Overfrequency" Function Tests

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 20/28 MiCOM P921-P922-P923 "Under/overfrequency" function tests 5.4.1 Wiring diagram Refer to the diagram used for the "Phase over/undervoltage protection” function tests. 5.4.2 MiCOM P922-P923 relay parameters Only configure the frequency for one of the six stages available.

  • Page 343: Rate Of Change Of Frequency" Function Tests

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 21/28 Stage (f1>) check: If time delay (tf1>) is short, gradually increase the frequency from the nominal frequency fn to the value of the stage (f1>): tripping should occur for a frequency in the range [(f1>) –...

  • Page 344: Test Example : Stage Df/Dt1 & Df/Dt2

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 22/28 MiCOM P921-P922-P923 [81R] Rate of change of Default values Settings frequency Group 1/2 stage activated No/Yes stage 1.0 Hz/s Hz/s stage activated No/Yes stage 1.0 Hz/s Hz/s stage activated No/Yes stage 1.0 Hz/s...

  • Page 345: On-Load Checks - Voltage Input Connections

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 23/28 ON-LOAD CHECKS - VOLTAGE INPUT CONNECTIONS The following on-load measuring checks ensure the external wiring to the voltage inputs is correct but can only be carried out if there are no restrictions preventing the energisation of the plant being protected.

  • Page 346: Final Checks

    P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 24/28 MiCOM P921-P922-P923 FINAL CHECKS The tests are now complete. REMOVE ALL TEST OR TEMPORARY SHORTING LEADS, ETC. IF IT HAS BEEN NECESSARY TO DISCONNECT ANY OF THE EXTERNAL WIRING FROM THE...

  • Page 347: Preventative Maintenance

    AREVA protective relays are designed for a life in excess of 20 years. The MiCOM P921-P922-P923 protection relays are self-checking. They thus require less maintenance than models using earlier technologies.

  • Page 348: Measurement Accuracy

    MiCOM P921- P922-P923 relays are designed to be removed while energised for fast replacement of the live part of the relay, thus minimising the absence of protection.

  • Page 349: Changing The Battery

    Technical Guide P92x/EN CM/E11 Commissioning Guide MiCOM P921-P922-P923 Page 27/28 Changing the battery Each relay has a battery to maintain records (P922-P923) and the correct time in case the auxiliary supply fails. The data maintained in a P922-P923 relay thus includes event, fault and disturbance records at the time of failure.
  • Page 350 P92x/EN CM/E11 Techncal Guide Commissioning Guide Page 28/28 MiCOM P921-P922-P923 BLANK PAGE...
  • Page 351 Technical Guide P92x/EN RS/E11 MiCOM P921-P922-P923 Test Report...
  • Page 353 Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 1/22 CONTENTS COMMISSIONING TEST RECORD PRODUCT CHECKS Relay de-energised Relay energised SETTING CHECKS ON-LOAD CHECKS RELAY SETTINGS INFORMATION INPUT/OUTPUT AND LED CONFIGURATION Configuration of logic inputs Timer delays used in logic equations...
  • Page 354 P92x/EN RS/E11 Technical Guide Test Report Page 2/22 MiCOM P921-P922-P923 BLANK PAGE...

  • Page 355: Commissioning Test Record

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 3/22 COMMISSIONING TEST RECORD Date Operator name Substation Circuit name Nominal network frequency Front plate information Protection relay Model number Serial number Nominal voltage Vn Auxiliary supply Vaux Communication protocol *Delete as...

  • Page 356: Product Checks

    P92x/EN RS/E11 Technical Guide Test Report Page 4/22 MiCOM P921-P922-P923 PRODUCT CHECKS Relay de-energised 2.1.1 Visual inspection Relay damaged? Yes/No* Rating information in conformity with installation? Yes/No* Earth terminals on case connected? Yes/No* 2.1.2 External wiring Wiring checked against diagram?

  • Page 357: Relay Energised

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 5/22 Relay energised 2.2.1 Watchdog contacts (auxiliary supply connected) Terminals 35 and 36 Contact open? Yes/No* Terminals 36 and 37 Contact closed? Yes/No* Contact resistance ____W/Not measured* 2.2.2 Date and Time...
  • Page 358 P92x/EN RS/E11 Technical Guide Test Report Page 6/22 MiCOM P921-P922-P923 P923) Contact resistance ____W/Not measured* Relay 6 (P922- Operation OK? Yes/No* P923) Contact resistance ____W/Not measured* Relay 7 (P922- Operation OK? Yes/No* P923) Contact resistance ____W/Not measured* Relay 8 (P922-...

  • Page 359: Setting Checks

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 7/22 SETTING CHECKS Application-specific settings? Yes/No* Programmable application-specific logic equations? Yes/No/Not used* If settings made using a portable PC, which software ___________________ (and version) was used? Programmable application-specific logic equations Yes/No/Not used*...

  • Page 360: On-Load Checks

    P92x/EN RS/E11 Technical Guide Test Report Page 8/22 MiCOM P921-P922-P923 ON-LOAD CHECKS Test cables disconnected? Yes/No/Not used* Wiring modified by client re-checked? Yes/No/Not used* On-load tests performed? Yes/No* “Voltage” input wiring checked? Yes/No/Not used* Type of wiring parametered in the relay?

  • Page 361: Relay Settings Information

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 9/22 RELAY SETTINGS INFORMATION OPERATION Default values Settings Password AAAA Model MiCOM P92- Part number ALST Frequency 50 Hz 50 Hz/60 Hz* DATE AND Default values Settings TIME (P922-P923) Date 01 Jan 1994...
  • Page 362 P92x/EN RS/E11 Technical Guide Test Report Page 10/22 MiCOM P921-P922-P923 CONFIGURATION Default values Settings df/dt : CYCLE NB 1/200* df/dt : Validat. NB 2 or 4* PROTECTION BLOCK 5 if H1 5-130 20 if H2 20-480 ALARMS Inst. Self-reset Yes/No*...

  • Page 363: Input/Output And Led Configuration

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 11/22 INPUT/OUTPUT AND LED CONFIGURATION Configuration of logic inputs Input 1 Input 2 Input 3 Input 4 Input 5 Functions/logic (P922/P923) (P922/P923) (P922/P923) inputs NONE UNLATCH CB FAIL AUX1 AUX2 BLK LOG1...
  • Page 364 P92x/EN RS/E11 Technical Guide Test Report Page 12/22 MiCOM P921-P922-P923 BLANK PAGE * Delete as appropriate...

  • Page 369: Protection Element Settings

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 17/22 PROTECTION ELEMENT SETTINGS The following notations are used in all of the tables below: H1 = type 1 hardware corresponding to the 57-130V range of inputs H2 = type 2 hardware corresponding to the 220-480V range of inputs...

  • Page 370: Phase Overvoltage Protection" Function

    P92x/EN RS/E11 Technical Guide Test Report Page 18/22 MiCOM P921-P922-P923 “Phase overvoltage protection” function [59] OVERVOLTAGE Default values Settings Group 1 Group 2 (P922-P923) stage activated No / AND / OR * No / AND / OR * overvoltage stage 130.0V if H1...

  • Page 371: Negative Sequence Overvoltage Protection" Function (P922-P923)

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 19/22 “Negative sequence overvoltage protection” function (P922-P923) [47] Neg. seq. O/V Default values Settings Group 1 Group 2 (P922-P923) stage activated No/Yes * No/Yes * neg. seq. O/V 130.0V if H1 stage 480.0V if H2...

  • Page 372: Under/Overfrequency Protection" Function (P922-P923)

    P92x/EN RS/E11 Technical Guide Test Report Page 20/22 MiCOM P921-P922-P923 “Under/overfrequency protection” function (P922-P923) [81] FREQUENCY Default values Settings Group 1 Group 2 stage activated No / 81< / 81> * No / 81< / 81> * frequency stage 50 Hz stage time delay 0.04s...

  • Page 373: Checks And Supervision

    Technical Guide P92x/EN RS/E11 Test Report MiCOM P921-P922-P923 Page 21/22 CHECKS AND SUPERVISION Information common to MiCOM P921-P922-P923 relays: CB SUPERVISION Default values Settings TCLOSE= 0.1 secs Secs TTRIP= 0.1 secs Secs Information specific to MiCOM P922-P923 relay: CB SUPERVISION...

  • Page 374: Communications

    P92x/EN RS/E11 Technical Guide Test Report Page 22/22 MiCOM P921-P922-P923 COMMUNICATIONS If the relay has the Modbus protocol installed for remote communication, the following parameters are required: COMMUNICATION Default values Settings COM Present No/Yes * Baud rate 19200 Bauds 300 / 600 / 1200 / 2400 / 4800 /...
  • Page 376 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/...

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