Symmetrical components analyze unbalanced three-phase systems: positive sequence (balanced, normal operation), negative sequence (balanced but reverse rotation, causes motor heating), and zero sequence (in-phase, linked to earth faults).
Differential protection detects faults by comparing input and output currents of equipment; imbalance triggers a trip signal to isolate the fault. It offers high sensitivity and selectivity.
Differential protection detects faults by comparing input and output currents of equipment; imbalance triggers a trip signal to isolate the fault. It offers high sensitivity and selectivity.