Main use:
     Measuring single / three phase transformers and transformer change, group, polarity error.
Main features:
     Three-phase automatic measurement, the measurement results full screen, quick and easy.
     Overvoltage protection function, ensure personal and equipment safety.
     Large-screen liquid crystal display, full Chinese menu operation.
     Own panel mini printer, measurements can be finished print
     Can store 20 groups of measurements, and are free to view.
Specifications:
     Range: 1 ~ 10000
     Group range: 1 ~ 12
     Accuracy: 0.2%