DD202 type single-phase watt-hour meter is the abroad advanced technology, to design and development of a new generation of single phase watt-hour meter long life technology, used for measuring and frequency than for 50 Hz ac meritorious electric power c

DD202 type single-phase watt-hour meter is the abroad advanced technology, to design and development of a new generation of single phase watt-hour meter long life technology, used for measuring and frequency than for 50 Hz ac meritorious electric power communication….With…