Use DRM to analyze the behaviour of the SF6 CBs' breaking contact

Dynamic Resistance Measurement (DRM) consists of sequentially measuring and recording resistance across any two points of a conducting element (e.g. a circuit breaker’s chamber) whose resistance varies in time, typically at very high speed.

The new Prime 600 will immediately display a DRM graph with the progressive variations of resistance across the circuit breaker’s pole during the open operation. Excessive shortening of the arcing contact is made evident at a first glance, and you can then dig into the details by comparing results from other poles or from previous tests on your computer. Other values like operation time in micro seconds are also taken to evaluate the circuit breaker’s response performance.

The Prime 600 is the only micro ohmmeter in the market featuring the Dynamic Resistance Measurement function. It will provide you in seconds with a graphic profile of the arcing contact of your sealed high voltage circuit breakers. No need to invest on an expensive analyzer or to use your most qualified field engineers for such a simple task.

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