The SMC Raptor C-05 Primary Injection Testing System is suitable for numerous test and measurement functions involving medium- to moderate current where the distance to the tested device is not a factor, as when testing MCBs or medium-sized MCCBs.
The ETI PI-1600B High Current Test Set will test low-voltage, molded-case and metal-clad, direct acting ACcircuit breakersfrom various manufactures. The test set can also be used on high current applications like ratio transformers, and heat runs.
The protective devices that are used for the oversight and operational decision making in low voltage circuit breakers (LVCBs) are are often simply referred to as a Solid-State Trip device (SST). They are essentially protective relays that are frequently an integrated part of a low voltage circuit breaker and monitor the primary current path of the circuit breaker. In normal operation, these solid-state trip devices will sense changes in the primary current path and make the decision to open the circuit based on the magnitude and duration of the fluctuation.
Primary current injection testing is usually associated with high current and high voltage power distribution systems generally found in an electricity substation, or in a large industrial installation.
Secondary current injection testing is performed on solid-state trip units using a specially designed power supply unit. However, the secondary injection method only tests the solid-state trip unit, and does not test the current sensors, wiring, or the breaker current handling components.