The Coil Analyzer SAT40A II series is a powerful and lightweight (only 11 kg / 24.3 lbs) tool for testing circuit breakers where a substation battery is not available. It is a unique device in the market due to its dual purpose.
SAT40A can be used as a DC and AC power supply unit for circuit breakers during commissioning and regular maintenance testing. The typical application covers scenarios when the substation battery is not connected or available. An advantage over substation batteries is enabled testing in under-voltage and over-voltage conditions. Furthermore, the stable voltage outputs enable an analysis of the coil and motor current graphs recorded with circuit breaker analyzers.
The outputs features are stated below:
International standards, such as IEC 62271-100 define recommended tests for circuit breakers’ condition assessment. Coil resistance, minimum trip voltage, and mechanism charging time are the tests that are mandatory in order to assess the state of a circuit breaker´s auxiliary circuit. SAT40A is capable to perform the following type of measurements:
Unlike many similar devices on the market, SAT instruments have regulated output voltage with a very low ripple (<0,5%).
When used with the DV Power’s CAT devices, SAT and CAT create one test system, controllable with the DV-Win software.
SAT40A can be used with other vendors’ circuit breaker analyzers also.