unsymmetrieschutz for line switched kondensatoreinheiten

摘要

Capacitors operable at high voltages consist of series-connected capacitor units, each of which is in turn composed of capacitors which are connected parallel to each other and can be individually disconnected by fuses. An asymmetry protection arrangement is disclosed for monitoring these units for voltage asymmetries. The arrangement compares the sum of the voltage drops present at the individual capacitor units with the voltage drop of the individual capacitor units to provide a signal in response to a fault condition. The signal thus obtained is usable for initiating a turn-off operation or for indicating a fault condition.