DV Power is pleased to announce the official launch of the TWR250B, a new three-phase test analyzer developed for fast, accurate, and fully automated field testing of power transformers.

The TWR250B enables single-step three-phase connection to all transformer windings, significantly reducing setup time during on-site testing. With turns ratio testing up to 250 V AC and winding resistance testing up to 25 A DC, the instrument delivers precise and repeatable measurement results.

Automated tests, demagnetization, and vector group detection are performed directly from the 10.1 in graphical touchscreen, allowing intuitive operation in the field. The built-in battery ensures reliable testing even in locations without external power supply.

The TWR250B is supported with the product brochure available in English, German, French, Spanish, and Italian.

Click here to read more or to request a quote.

January 14, 2026