TWA STANDARD/ADVANCED 3-PHASE WINDING RESISTANCE & TAP CHANGER ANALYSIS

When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.

Available models:

TWA STANDARD

TWA-25A, 5 mA –25 A

TWA-40D, 5 mA –25 A; up to 25 A for winding resistance measurement and up to 40 A for the 3-phase synchronization test

TWA ADVANCED

TWA-400, 5 mA –40 A DC, 7’’ graphical touchscreen display, thermal printer (optional)

TWA-500, 5 mA –40 A DC, 10.1’’ graphical touchscreen display