PREVENTION OF ERRONEOUS MOTION AND NONNACTIVATION OF PROTECTIVE RELAY FOR GROUND BUS BAR

摘要

PURPOSE:The current in a cable system and a reactor system is taken out from the secondary side of a transformer, and is totalled by a total current transformation so as to regulate the phase aimed at is to prevent the occurrence of erroneous or non-activation motion of a phase comparison relay in accordance with the phase difference of the incoming electric currnet.