electricalscho

A feature of digital relays that enables compensation to be carried out for a CT or VT ratio that is not ideal.

The output at standard calibration.

With regard to lighting, the point in time when 50% of a statistically significant number of lamps has failed.

The number of Amp-Hours a battery can deliver under specific conditions (rate of discharge, end voltage, temperature).

2 Time-delay, 21 Distance, 25 Synchronism-check, 27 Undervoltage, 30 Annunciator, 32 Directional power, 37 Undercurrent or underpower, 38 Bearing, 40 Field, 46 Reverse-phase, 47 Phase-sequence voltage, 49 Thermal, 50 Instantaneous