The numerical capacitor relay SPAJ 160 C is an integrated current measuring multi-function relay designed to be used for theprotection of capacitor banks. Capacitor banks are used in the power system for compensating the reactive power and for filtering harmonics.
The capacitor banks are usually protected against overload caused by harmonic currents and overvoltage caused by internal faults in the bank. Protection against unintentional reconnection of a charged capacitor to an energized network is also to be included. All these functions are incorporated in the capacitor protection relay.

A complete protection system for capacitor banks should also include overcurrent, short circuit and earth-fault protection. The capacitor protection relay SPAJ 160 C is easily supplemented with adequate overcurrent and earth-fault relays from the SPACOM product range.

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