IGS's Solution: Transient Voltage Surge Plant damage

The ZORC is a unique, high frequency transient overvoltage surge suppressor for the protection of motors, transformers and generators from steep wave-front, short rise-time, high magnitude, spikes, surges, other transient voltages and circuit switching:

·        Provides comprehensive protective characteristics at all practical surge magnitudes and rise-times for insulation co-ordination

·        Conforms with both the CIGRë and IEEE motor impulse voltage withstand recommendations, as shown in the additional technical ZORC document

·        Halves the magnitude of steep wave-front surges impinging on the load terminals by providing a matched cable terminating impedance under transient conditions, thereby eliminating refraction of steep wave-front surges (i.e. eliminates voltage doubling effects).

·        Eliminates multiple pre-striking and re-striking transients associated with vacuum and other switchgear, by eliminating reflections of the pre-strike and re-strike current wave-fronts, and thus preventing high frequency current zeros in the contact gap of the switch.

Key Features:

·        Saves money by eliminating production downtime due to insulation failures.


·        Protects motors, generators and transformers throughout their service life.


·        Eliminates multiple pre and re-strike transients associated with vacuum and other switchgear

·        Standard and intrinsically safe models available


·        Three and single phase panels.

  Download more information on the ZORC