Haefely/Tettex has released the new transformer winding resistance meter – type Tettex 2293.

The Tettex 2293 is the result of extensive research and years of experience testing transformers. It incorporates a fast and highly advanced procedure to measure winding resistance. A simple one-time-connection system together with the simultaneous winding magnetisation method drastically reduces measuring time.

The simultaneous winding magnetisation (SWM) method guarantees fast and reliable measurements even on large power transformers with delta windings on the low voltage side, where stable measurements can be seldom reached, using traditional winding resistance measurement instruments.

In addition, the new demagnetisation function eliminates the magnetic remanence in the core after the application of a DC voltage.

The full graphical interface with a 7in touch screen guides the operator through the test procedure. The unit visualises each test cycle and displays the results graphically or in list format.