Earth fault protection can be coordinated using ETAP software. Earth fault protection is set at 20%-30% of FLC (Full Load Current).
Earth fault protection can be provided by calculated fault current using the same phase CT current input (50N/51N) and by the measured fault current using neutral CT in transformer neutral (50G/51G).
Study of IDMT Overcurrent Relay
Inverse definite minimum time over current relay (IDMT)
IDMT RELAY || COMPLETE AND EASY EXPLANATION
IDMT RELAY EASY EXPLANATION | why we use IDMT relay on feeder | What is IDMT over current relay
What is IDMT Relay| Inverse Time Relay| DMT vs IDMT Relay
Relay settings Calculation | Relay trip co ordination | IDMT Relay setting Calculation
OVER-CURRENT RELAY SETTINGS CALCULATION FOR TRANSFORMER and Relay Coordination
IDMT Overcurrent Relay Setting & Coordination
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