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Areva MiCom P121 User Manual

Areva MiCom P121
668 pages
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MiCOM
P120/P121/P122/P123
Overcurrent Relays
Version 11
Technical Guide
P12X/EN T/A96
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Areva MiCom P121 Specifications

General IconGeneral
ModelMiCOM P121
Frequency50/60 Hz
OutputsRelay outputs
DisplayLCD
TypeProtection Relay
ManufacturerAreva
CommunicationRS485
ProtocolsModbus
Protection FunctionsEarth fault
EnclosurePanel mount

Summary

Introduction

Safety Instructions

General safety statements and external label information for AREVA T&D equipment.

User Guide

Instructions on relay interface, menus, displays, alarms, and password management.

Technical Data

Comprehensive technical specifications including ratings, insulation, EMC tests, and protection/automation setting ranges.

Commissioning Test & Record Sheets

Guidelines and forms for relay commissioning tests, setting checks, and final verification.

Earth and Phase Current Overcurrent Functions

Transformer Inrush Current

Blocking Logic Function (Blocked Overcurrent Protection)

Restricted Earth Fault

Setting Guide

Provides guidance on selecting typical setting values for the relay and CT requirements for REF.

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