... power consumption, long life etc, is suitable for the single-phase AC active electric energywith rated frequency of 50Hz.Function ... )50 or 60Accuracy classClass 1 or class 2 DDS226 Single-phase Elect ionic Watt-hour Meter Verified Information This ... report >> Production Capacity: Product line name Production Line Capacity Actual Units Produced(Previous Year) Circuit breaker, KWH meter, Power supply, ...