DD28 single phase watt-hour meter is an induction meter which is applicable to measure the rated frequency of 50Hz. It has the features of small volume, tightly structure design, low power loss etc. All technical target are conformed to National Standard GB/T 15283-94 idt International Standard IEC62053-11.
The meter has separable electromagnet and the bearing have four kinds:single-jewel, dualjewel, magnetic thrust and magnetic floating. The case adopts material of glass, plastic, poly carbonate etc.The frame is aluminium alloy with excellnet mechanical intensity.

