Finally, winding resistance tests are invaluable when fault finding transformers, as many transformer faults or problems will cause a change in the DC resistance measured from the bushings.

In a large solar installation, high harmonics from inverters can destroy transformers primarily by causing excessive heat ...

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 ...

Neoptix Fiber-Optic Sensors has introduced its T/Guard Direct Windings Monitoring System standard with large backlighted LCD and MODBUS RTU communication. Neoptix T/Guard now features a standard four ...

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 CDEL itself also needs power: 12V for MOSFET drive (and maybe a fan relay), and 3.3V for everything else. No problem. I’ll just throw a couple more windings onto the donut. And they won’t need to ...