... 3)CE,CB,ISO9001,14001,IEC 4)OEM GeneralThe DDS226 type single-phase electronic watt-hour meter adopt exclusive use LSI,the ... power consumption, long life etc, is suitable for the single-phase AC active electric energywith rated frequency of 50Hz.Function and ... Produced(Previous Year) Circuit breaker, KWH meter, Power supply, Transformer, Switch cabinet, Explosion-proof products USD46,000,000 Per Month ...