Power Transformer Testing with One-Time Test Connection


TESTRANO 600 is the world’s first portable, three-phase test system, which supports all common electrical tests on power transformers. Weighing just 44 lbs / 20 kg, it is ideal for routine and diagnostic testing on-site and during factory acceptance tests (FAT). In addition, its innovative design significantly reduces wiring efforts, cutting down testing time to one third compared to conventional single-phase testing.

Get in touch with the innovative and simple connection concept of TESTRANO 600 and check out this short video!


TESTRANO 600 was demonstrated at the Knoxville Utilities Board (KUB) in Tennessee as part of the T&D HOW video series. With the new three-phase system, power transformers can be tested using a one-time test connection. Thus, common diagnostic tests such as transformer turns ratio, exciting current, DC winding resistance, dynamic resistance, short-circuit impedance / leakage reactance as well as frequency response of stray losses (FRSL) can be measured with a single setup. By combining TESTRANO 600 with the accessory CP TD1, it can also test power/dissipation factor and capacitance up to 12 kV.

You are using an outdated browser version.
Please upgrade your browser or use another browser to view this page correctly.