Calibration current maximum rated current calibration

Choosing a Home meter should be the main consideration of its rated voltage, frequency, calibration current and the maximum rated current, meter appearance four aspects. 1 collar rated voltage of the constant voltage  Circuit breaker be home in the same supply voltage,  power transformers  meter is rated at 220V. (2) Power frequency of household alternating current frequency is typically 50 Hz, 50 Hz should be used in labeled (or 50Hz) of the meter. 3 Calibration current maximum rated current meter  electric meter current is nominal current, the general said, 3A, SA, 10A is the calibration current. According to meter manufacturing requirements, when the current through the meter calibration current 5% or less, the meter is not accurate measurement.