Temperature Rise Test Kit

The Temperature Rise Test Kit is used to check the temperature rises of the active parts of the transformer including oil, windings, core etc which should not exceed the limits agreed on or by the standards. It is ideally suited to commissioning and maintenance testing where very high currents are required. The system consists of separate control and loading units for maximum flexibility. The control unit contains all control and metering circuitry, and is linked to the loading unit by control and metering cables.

The test system is different whether we have to carry out the temperature rise test on one transformer liquid filled (oil or silicone liquid) or dry-type. In fact in the first case we use the short-circuit method while in the second case we use the back-to-back method.

Primary current injection test sets have two main applications. The first of these is the testing of complete relay protection systems comprising the isolated high voltage conductor, the current transformer, the protection relay and the circuit breaker. Because of the inconvenience of breaking into the feeder circuit on the primary side of the current transformer, primary current injection is normally applied at the time of commissioning protection equipment or after major repair. As many of the protection systems requiring testing have a critical performance in relation to time, the primary current injection test sets incorporate a time counter facility.