DT862-type B three-phase four-wire meritorious electric energy meter is combined with long life technology and regular watt-hour meter features electric energy meter, elaborate design and manufacture of a new generation of electric energy meter, used for

DT862-type B three-phase four-wire meritorious electric energy meter is combined with long life technology and regular watt-hour meter features electric energy meter, elaborate design and manufacture of a new generation of electric energy meter, used for measuring and frequency than in 50 Hz ac