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Provides an overview of the safety guide's purpose and scope.
Details essential health and safety information for handling electrical equipment.
Explains safety symbols and labels used on the equipment and in documentation.
Covers procedures for safe installation, commissioning, and servicing of the equipment.
Lists technical safety specifications including fuse rating, protective class, installation category, and environment.
Details CE conformity and relevant European Community directives.
Lists recognized and listed marks applicable for North American safety certifications.
Provides general information on handling, unpacking, and storing relays.
Details default parameter settings and their configurable ranges for P125, P126, P127 relays.
Provides a description of the rear terminal blocks for all relay models.
Explains how to establish a local connection to a PC using RS232 serial cable.
Provides guidance on connecting the relays via RS485 cable for remote network access.
Illustrates wiring diagrams for P125, P126, and P127 relays.
Provides detailed case dimensions for P126 & P127 and P125 relays.
Lists contact details for AREVA T&D After Sales Service for product information.
Covers relay receipt, handling, and electrostatic discharge (ESD) precautions.
Provides detailed precautions for handling electronic modules to prevent damage.
Describes how to mount relays individually or as part of a panel/rack assembly.
Details precautions for unpacking relays to prevent damage or alteration of settings.
Provides guidelines for storing relays in their original cartons to protect from dust and moisture.
Specifies that MiCOM P125, P126, and P127 relays are available in a 4U metal case.
Describes MiCOM P125, P126 & P127 relays as numerical relays for protection and control.
Details password protection, entry, changing, and invalidation procedures.
Covers analogue inputs and general characteristics of the relays.
Explains the relay's menu structure, including OP PARAMETERS, CONFIGURATION, MEASUREMENTS, COMMUNICATION, PROTECTION, AUTOMAT. CTRL, and RECORDS.
Details power supply, frequency, current inputs, voltage inputs, logic inputs, and output relay characteristics.
Specifies dielectric withstand, impulse voltage, and insulation resistance ratings.
Outlines immunity to high frequency disturbances, fast transients, electrostatic discharge, and radio frequency impulses.
Defines operating temperature, humidity, enclosure protection, sinusoidal vibrations, shocks, bump, and seismic ratings.
Provides deviation specifications for protection elements like phase overcurrent and earth fault elements.
Lists deviation specifications for automation timers such as autoreclose and auxiliary timers.
Details deviation specifications for measurements like phase current, earth current, and voltage.
Specifies setting ranges for various protection functions like overcurrent, earth fault, and undervoltage.
Introduces protection of underground/overhead lines and MiCOM directional relays.
Details current protections like overcurrent, earth fault, thermal overload, undercurrent, negative sequence.
Covers undervoltage and overvoltage protection settings and considerations.
Explains autoreclose function functionality, settings, and application guidelines.
Covers trip commands, latch relays, broken conductor detection, cold load pickup, auxiliary timers, and logic functions.
Outlines requirements and preliminary checks before commissioning MiCOM relays.
Details important notes, injection test sets, and communication requirements for commissioning.
Covers tests for terminal allocation, ESD, visual inspection, earthing, and CTs.
Provides procedures for verifying applied settings, measurements, and thresholds.
Provides a detailed description of the P125 relay's rear terminal layout.
Details the rear terminal description for MiCOM P126 and P127 relays.
Illustrates current transformer insertion schemes for P126 & P127 relays.
Covers relay identification, test records, auxiliary supply, measurements, and introduction to tests.
Provides a structured sheet for recording commissioning test results and parameters.
Details additional tests for P126 and P127 relays, including overcurrent and earth fault protection.
General| Rated Voltage | 24-250V DC or 48-265V AC |
|---|---|
| Rated current | 1A or 5A |
| Frequency | 50/60 Hz |
| Digital Inputs | 8 |
| Standards | IEC 60255 |
| Inputs | 8 Digital Inputs |
| Operating Temperature | -25°C to +70°C |
| Current Rating | 1 A, 5 A |
| Communication Protocols | IEC 60870-5-103, Modbus |
| Protection functions | Overcurrent, Earth fault |
| Mounting | Panel or DIN rail |
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