Specification :

test single phase or three phase energy meter at real load on site.

Measure various parameters: U, I, P, Q, PF, phase angle, frequency, harmonics and etc.

Judge the mistake of the cable connection according to relationship of the voltage and current.

Display vector chart.

Store and print the testing results.

Display wave of voltage, current, and bar graph of each harmonics.

Measure the ratio or lag-angle of low-voltage transformer.