Huazheng HZGC3521 Series, Руководство пользователя

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Three-phase energy meter field calibrator
Notes to check parameter settings:
1. "Photoelectric" mode and "manual" mode.
For example: check three-phase mechanical watt-hour meter, the energy constant is
450 r/kW.h, and the number of turns is set to 3.
When the "photoelectric” mode is used for calibration, each the black pointer of the
energy meter walks one circle, the photoelectric sampler will produce a pulse; when the
instrument receives a total of three pulse signals, an error is then calculated.
When the "manual" mode is used for calibration, each the black pointer of the energy
meter walks 3 circles, press the manual switch once. Each instrument receives a pulse signal,
it will calculate an error.
2. When the current is higher than or equal to 100A, the correct TA transformation ratio
must be entered; otherwise it is impossible to accurately check the meter error