Logic is simple...in S/S -A for that particular FDR CB is open and there is current threshold, this current will not be counted rather end fault will be activated and it will also send a direct trip to the far end and thereby avoid delayed TRIPPING due to zone 2 from far end.
How busbar at ss A will detect end fault pls explain the logic
Logic is simple...in S/S -A for that particular FDR CB is open and there is current threshold, this current will not be counted rather end fault will be activated and it will also send a direct trip to the far end and thereby avoid delayed TRIPPING due to zone 2 from far end.