The RMO-A is a portable micro-ohmmeter designed for contact resistance measurements of switchgear during manufacturing, commissioning and maintenance stages.
This micro-ohmmeter is widely used by medium and high-voltage circuit breakers manufacturers.
Other typical applications are testing of disconnecting switches, high-current bus bar joints, cable splices, and different high-current links.
It accurately measures not only in factory environments but also in high-induction fields and substations. Although placed in a very portable and lightweight metal housing, RMO-A micro-ohmmeters have very high output power capabilities. They can generate 600 A test current continuously for up to 20 s. You can test with current up to 100 A without rest time.
High output voltage enables a wider measurement range at the highest test currents, as well as the use of thinner/longer test cables.
RMO-A micro-ohmmeter generates a true DC ripple-free (less than 1 %) current with automatically regulated test ramps. During a test, the RMO-A ramps up with increasing current before measuring and decreasing current after the measurement. This significantly decreases magnetic transients and ensures great accuracy.
