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

This test set uniquely combines winding resistance measurement, transformer turns ratio, tap changer dynamic resistance, core demagnetization, transformer type detection, magnetic balance, short ...

Voltage transformers (VT) are used in electrical grids for metering and/or protection purposes. The high requirements regarding their precision demand a calibration ...

Weighing just 3.3 lbs., the Megger TTR100 handheld test set measures the turns ratio, excitation current, phase displacement, DC resistance, and polarity of windings in single-phase and three-phase ...

The use of a copper winding as a temperature sensor for transformer windings is not new. But the circuit presented here goes further. It can make the measurement in-circuit and in real time. The use ...

Alpha-Core introduces the Model HBC-2 turns counter, a precision instrument that accurately counts the number of turns of magnet wire in toroidal and other types of core transformers. The HBC-2 also ...