The DD738 type single-phase long life watt-hour meter is a kind of induction type meter, which measure active energy electric power consumption in rated frequency 50Hz and single phase AC electricity net. The type single-phase watt-hour meter is a new style induction type meter and absorb domestic and over seas induction meter new techniques and use long life techniques. Its technique performance is completely conform to the stipulated requirement of National Standard GB/T15283-1994 Class 0.5 1 and 2 AC Active Watt-hour Meter.

Function and Feature
1. The frame adopts high quality steel plate once molding
2. The voltage elements adopt whole closed vacuum mounding with excellent mechanical strength, stable structure and anti-impact
3. The meter adopts magnetic thrust bottom bearing
4. It also has small abrasion, long life and small error change, All kind of adjustment mechanism adopted stepless shifting mechanism the meter starting and creeping need not to be adjusted which is finished by anti-creeping hole of disc and convenient for adjusting by user.