The DD283/DD28/DD284 type single phase watt-hour meter is a kind of induction meter,which is applicable to measure the rated frequency 50Hz and measurement of  active electric energy in single phase A.C electric net.All technical targets are completely conformed to National Standard GB/T17215.311-2008 Class 0.5 1 and 2AC Active Watt hour Meter.
Function and Fearture
1.The meter has seqarable iron core structure
2.The bearing has three kinds: single-jewel,dual jewel,magnetic floating
3.The case has three kinds: aluminum,plastic and glass
4.The die-casting frame is alloy aluminum with excellent mechanical strength.