Learn how to test a transformer: insulation resistance, TTR, winding resistance, polarity, continuity, and dielectric checks.

Bob is a service technician who is well trained and nationally certified. However, he sometimes suffers from the same confusion that all technicians occasionally do — the facts that he gathers may or ...

Bushings are the most critical component of a low-voltage (LV) transformer. They are important to the transformer’s operation because they are active parts. Unfortunately, bushing failures are the ...