Need help?Do you have a question about the Areva MiCOM P127 and is the answer not in the manual?
Describes the design, applications, and features of MiCOM P125, P126, and P127 relays.
Explains the directional overcurrent and earth fault protection functions, including setting current thresholds and tripping zones.
Provides instructions for correctly energizing the relay, including system and auxiliary power supply connections.
Details the password protection feature, its application to settings, and recovery procedures.
Details parameters configurable in the CONFIGURATION menu, including LEDs, CT/VT ratios, and logic inputs.
Allows programming of protection functions and settings for phase or earth fault protection.
Details the setting ranges for directional/non-directional phase overcurrent protection on the P127 relay.
Specifies the protection setting ranges for phase overcurrent protection on the P126 relay.
Provides protection setting ranges for directional/non-directional earth fault protection across models.
Details the setting ranges for the Earth Wattmetric protection functionality.
Details the protection setting ranges for undervoltage protection specifically on the P127 relay.
Details the various settings available for the multishot autoreclose function.
Details the function for detecting series or open circuit faults caused by broken conductors.
Explains the circuit breaker failure detection mechanism and associated parameters.
Describes the trip circuit supervision mechanism to ensure trip circuit continuity.
Details features for supervising and monitoring circuit breaker status and condition.
Explains the Switch on to Fault and Trip on Reclose functions for fast fault clearing.
Outlines the necessary steps and verifications before commissioning MiCOM P125, P126, and P127 relays.
Details important notes and requirements for the commissioning test environment, including test sets and communication.
Describes tests for verifying product allocation of terminals, ESD, visual inspection, earthing, and CTs.
Ensures that all relay settings are correctly applied for the specific application.
Addresses detection of internal faults (minor/major) and associated alarm messages and LEDs.
Provides instructions for replacing the active part or the complete relay.
Details the procedure for testing phase overcurrent protection elements.
Details the test procedure for earth overcurrent protection.
Explains the test for directional earth fault overcurrent protection.
Describes the test procedure for earth fault wattmetric protection.
Details the trip circuit supervision function and its connection.
Verifies the Breaker Failure operation with specific relay settings.
Verifies directional earth fault elements operate at set thresholds and boundary trip zone.
To Next Page
General
