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Areva MiCOM P922 User Manual

Areva MiCOM P922
376 pages
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MiCOM
P921/P922/P923
Voltage and Frequency Relays
Technical guide
P92x/EN T/E11
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Areva MiCOM P922 Specifications

General IconGeneral
Rated Voltage24-250 V DC / 48-265 V AC
Rated frequency50/60 Hz
Binary inputs8
DisplayLCD
Communication portsRS485
Communication ProtocolsIEC 61850, DNP3, Modbus
Protection FunctionsOvercurrent, Earth Fault
MountingPanel
InputsBinary
OutputsBinary
EnclosureIP54 (front), IP30 (rear)

Summary

Safety Section

1. SAFETY INSTRUCTIONS

Provides essential safety instructions for handling and operating the MiCOM relay to prevent damage and ensure user safety.

Getting Started

11. ACCESS TO THE MENU

Guides the user on how to navigate the relay's menu structure, including password protection and setting changes.

Technical Data

3. PROTECTION SETTING RANGES

Outlines the setting ranges for various protection functions like undervoltage, overvoltage, and frequency, including time delays and characteristics.

12. SAFETY

Covers safety aspects, specifically the Low Voltage (safety and insulation) Directive compliance.

User Guide

10. PROTECTIONS

Explains the configuration and HMI descriptions for various protection functions including undervoltage, overvoltage, residual overvoltage, negative sequence, and positive sequence undervoltage.

Communications

1. MODBUS PROTOCOL

Details the MODBUS protocol characteristics, network features, connection parameters, message validation, and functions supported by MiCOM relays.

2. K-BUS PROTOCOL AND COURIER LANGUAGE

Explains the K-Bus protocol, its transmission layer, connection, and the Courier language, including relay database organization and event lists.

Installation

5. RELAY MOUNTING

Describes methods for mounting MiCOM relays, including rack mounting with specific frames and panel mounting with fixing details.

Commissioning Guide

3. EQUIPMENT REQUIRED FOR COMMISSIONING

Lists the minimum and optional equipment required for commissioning MiCOM relays, including test sets, multimeters, and PCs.

4. PRODUCT CHECKS

Details essential checks for the relay before and after applying power, covering visual inspection, wiring, insulation, and operational status.

5. SETTING CHECKS

Ensures that all protection, control, and logic equation settings are correctly applied to the relay, providing methods for applying and checking them.

5.3 Testing the "Phase overvoltage protection" and "Phase undervoltage protection" functions

Provides detailed test procedures and expected results for phase overvoltage and undervoltage protection functions using definite and inverse time delays.

5.4 "Under/overfrequency" function tests

Describes how to test the under/overfrequency protection function, including relay parameter configuration and test examples.

5.5 "Rate of change of frequency" function tests

Explains how to test the rate of change of frequency function, including wiring diagrams, relay parameters, and test examples.

8. PREVENTATIVE MAINTENANCE

Recommends periodic monitoring and maintenance for protective relays to ensure correct operation, covering checks for alarms, inputs, outputs, and accuracy.

Test Report

1. COMMISSIONING TEST RECORD

Provides a template for recording commissioning details, including date, operator, substation, circuit, protection relay information, and safety checks.

2. PRODUCT CHECKS

Details checks to be performed on the relay before and after energization, covering visual inspection, wiring, insulation, watchdog contacts, and auxiliary supply.

3. SETTING CHECKS

Guides the verification of application-specific settings, including programmable logic equations and their validation.

4. ON-LOAD CHECKS

Describes on-load checks for test cables, wiring, and voltage inputs, ensuring correct operation and measurements.

6. INPUT/OUTPUT AND LED CONFIGURATION

Details the configuration of logic inputs, timer delays in logic equations, and the mapping of functions to LEDs and output relays.

7. PROTECTION ELEMENT SETTINGS

Provides tables for setting parameters of various protection elements including undervoltage, overvoltage, residual overvoltage, negative sequence, positive sequence, and frequency protections.

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