Sigma Toroidal Current Transformers are specially produced for Sigma Leakage Current Detection Relays.

Sigma Toroidal Current Transformers;

80mm, 110mm, 160mm, 210mm, 300mm according to the inner diameter

110mm and 210mm in the inner diameter can be opened as type

280*1125 and 470*160mm as a rectangular type.

illegal current detection relay + opening coil + thermal magnetic switch combination created by using toroidal current transformers.

In this combination, thermal magnetic circuit cutter performs the opening of the circuit with other auxiliary elements in case of illegal current occurs, while at the same time protects the system against excessive load currents and short circuit currents. Leakage current detection relay measures the leakage current from the toroidal current transformers and allows the circuit breaker to quickly cut the circuit in case the specified leakage current level is exceeded.

Phase and neutral conductors through the Sigma Electrical Toroidal current transformers. The vector totals of the currents that go through the phase conductor and return via the neutral conductor are zero “0 .. When a leakage current occurs in the system, the toroidal current transformers perceive this difference current and protect the system thanks to the illegal current protection relay and circuit breaker.

Standard Type Sigma Toroidal Current Transformer