Directional Earth-Fault Relay SPAS 120 C ABB

Two-stage directional earth-fault relay for distribution networks Directional low-set earth-fault stage with definite time characteristic Directional high-set earth-fault stage with instantaneous operation or definite time characteristic The operation direction of the high-set earthfault stage can be the same as that of the low-set stage or the opposite Output relay functions can be freely configured by the user Flexible adaptation of the relay to different applications Manual selection or remote control of the operation characteristic I0sinj or I0cosj Digital display of settings, measured quantities, recorded fault values, etc Extensive two-way data communication via fibre- optic serial bus Continuous self-supervision of hardware and software including autodiagnosis Powerful software support for parametrization and supervision of the relay Member of the SPACOM product family and PYRAMID® , ABB' s coordinated protection and control concept