The Winding Ohmmeter RMO30TW instrument is designed for winding resistance measurement of inductive objects. The RMO30TW instrument is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO30TW instrument is accurate (0,1%), powerful (up to 30 A) and lightweight (8,5 kg / 18.7 lbs). It generates a true DC ripple free current with automaticallyregulated measurement and discharging circuit.
RMO30TW instrument can perform a simple, quick and reliable transformer on-load tap changer verification. This instrument enables measurements of a winding resistance in every tap position of an on-load tap changer without discharging between the tests. Problems with switching of the OLTC, such as interruption, can be detected with these measurements.