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It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.
The regulation system is based on a continuously variable motorized autotransformer (Variac) that supplies to a power transformer that delivers the high current outputs and isolate the main supply from the load. A built-in ammeter and a timer gives the information about the current value and the operation time of the relay or breaker under test.
CHARACTERISTICS
Permanent current up to 2000A, 4kVA in 4 Ranges.
Made up of 2 units, control and power unit.
Built in digital ammeter 0.5% accuracy.
Built in digital timer resolution 1 ms.
Thermal and shortcircuit protection.
Motorized Variac.
APPLICATIONS
Direct and motor overload relay test.
In general, primary tests including the complete loop, i.e., current transformer, leads, protective relay and circuit breaker.