MM 200 – Micro Ohm Meter

Micro-Ohm Meter Self Powered 100A / 200A Test Current

In response to ever growing demands for safer and more accurate methods of testing circuit breakers, Weis has developed the Self Powered MM200 portable micro-ohm meter. It is used for measurement of resistance (μ) by injecting a heavy current through a breaker contact or load carrying joint.

A fixed regulated test current output of 100A pure DC or 200A pure DC is used in either pulsed or true continuous test modes, for static resistance measurement.

As a stand-alone unit, static testing can be performed with a direct readout on a built in LCD meter. When used in conjunction with the Weis SA100, SA100R or SA100RS switchgear analyser / breaker tester (having a travel input for breaker mechanism movement), a dynamic micro-ohm test can be made that will give detailed information about the state of fixed contact surfaces, moving contact surfaces, main contact, arcing contact and the complete current circuit of the breaker in every step during a close-open operation.

Download “MM 200 v2”

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