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Areva Manuals
Relays
MiCOM P922
Technical manual
Areva MiCOM P922 Technical Manual
Voltage and frequency relays
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Contents
Table of Contents
Bookmarks
Table of Contents
Section 1
Table of Contents
1 Receipt of Relays
2 Handling of Electronic Equipment
3 Stockage
4 Unpacking
5 Relay Mounting
Rack Mounting
Panel Mounting
Section 2
6 Relay Wiring
Medium and Heavy Duty Terminal Block Connections
RS485 Port
Visual Inspection
Insulation
On Completion of the Insulation Resistance Tests, Ensure All External Wiring Is Correctly Reconnected to the Relay
External Wiring
Watchdog Contacts
Auxiliary Supply
With the Relay Energised
Watchdog Contacts
Date and Time
Light Emitting Diodes (Leds)
Testing the Alarm LED
Testing the Trip LED
Testing the User-Programmable Leds
Opto-Isolated Inputs
Output Relays
Rear Communications Port
Courier Communications
Modbus Communications
IEC60870-5-103 (VDEW) Communications
Voltage Inputs
Setting Checks
Applying the Settings to the Relay
Checking the Relay Settings
Testing the "Phase Overvoltage Protection" and "Phase Undervoltage Protection" Functions
Wiring Diagram
Micom P921-P922-P923 Relay Parameters
Configuration with 3 Single Voltages ("3Vpn") and "AND" Detection Logic
Stages (V>) or (V<) with Definite Time Delay
Stages (V>) or (V<) with Inverse Time Delay
Configuration with 3 Single Voltages ("3Vpn") and "OR" Detection Logic
Under/Overfrequency" Function Tests
Wiring Diagram
Micom P922-P923 Relay Parameters
Test Example: Stage (F1>) or (F1<)
Rate of Change of Frequency" Function Tests
Wiring Diagram
Micom P923 Relay Parameters
Test Example : Stage Df/Dt1 & Df/Dt2
On-Load Checks - Voltage Input Connections
Final Checks
Preventative Maintenance
Maintenance Period
Maintenance Checks
Alarms
Opto-Isolated Inputs
Output Relays
Measurement Accuracy
Method of Repair
Replacing the Complete Relay
Changing the Battery
Instructions for Replacing the Battery
Post Modification Tests
Battery Disposal
Cleaning
Section 3
1 Commissioning Test Record
2 Product Checks
Relay De-Energised
Relay Energised
3 Setting Checks
4 On-Load Checks
5 Relay Settings Information
6 Input/Output and Led Configuration
Configuration of Logic Inputs
Timer Delays Used in Logic Equations
7 Protection Element Settings
Setting Group Used (P922-P923)
Phase Undervoltage Protection" Function
Phase Overvoltage Protection" Function
Residual (Zero Sequence) Overvoltage Protection" Function
Negative Sequence Overvoltage Protection" Function (P922-P923)
Positive Sequence Undervoltage Protection" Function (P922-P923)
Under/Overfrequency Protection" Function (P922-P923)
Rate of Change of Frequency" Function (P923)
8 Checks and Supervision
9 Disturbance Records and Measurements
10 Communications
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Quick Links
1
Receipt of Relays
2
Relay Wiring
3
Communications
Download this manual
MiCOM
P921/P922/P923
Voltage and Frequency Relays
Technical guide
P92x/EN T/E11
Table of
Contents
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Chapters
Section 1
311
Section 2
322
Section 3
353
Table of Contents
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