Perform routine polarity validation and turns ratio tests on power, distribution, and instrument transformers guided by colour-coded leads, clamps, and customisable on-screen vectors that match the transformer nameplate under test. In addition to turns ratio tests, the TTRU1 adds go/no-go short circuit, open circuit, and inductance test capabilities. The easy to follow setup ensures the right result the first time – just click start and perform over 1000 turns ratio tests on a single NiMH AA battery charge!