TFR-100 Transformer Turn Ratio Finder Automatic

Vanguard Instruments TFR-100 Transformer Turn Ratio Finder Automatic 3 Phase TFR

The TRF-100 can perform a specific test for each transformer type (such as single phase, delta to Y, Y to delta, delta to delta, or Y to Y) without the need to switch test hookup cables. Also, the unit’s automatic transformer phase detection feature can detect different transformer vector diagrams. The TRF-100 can automatically detect and test 67 transformer types defined by ANSI, CEI/IEC.

To prevent an accidental wrong test-lead hook-up (e.g., when the operator reverses H and X leads), the TRF-100 outputs a low-level test voltage to verify the hook-up condition before applying the full test voltage to the transformer.

In good working and cosmetic condition. Tested and works.