Abb presents capacitor protection relays who protects against overload produced by harmonic currents and over voltage caused by internal faults in the bank. Being a part of that the numerical capacitor relay spaj 160 c is an integrated current measuring multi-function relay designed to be used for the protection of capacitor banks. Salient features are as follows:
1 the capacitor banks are usually protected against overload caused by harmonic currents and over voltage caused by internal faults in the bank. Protection against unintentional reconnection of a charged capacitor to an energized network is also to be included.
2 all these functions are incorporated in the capacitor protection relay.
3 a complete protection system for capacitor banks should also include over current, short circuit and earth-fault protection.
4 the capacitor protection relay spaj 160 c is easily supplemented with adequate over current and earth-fault relays from the spacom product range.
