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General
The DD28 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 sigle-phase A.C electric net.

Function and features
1. The meter has separable iron core structure;
2. The bearing has three kinds: single-jewel, dual jewel, magnetic floating; The case
has three kinds: aluminum, plastic and glass;
3. The die-casting frame is allow aluminum with excellent mechanical strength.

Specifications

Type	Accuracy	Rated voltage (V)	Rated current (A)
DD282	2	220~240	2(4),2.5(5),3(6),5(10) 10(20),20(40),20(80)
DD284	2	220~240	5(20),3(12),10(40) 15(60),20(80)

Type	Overload capacity	Starting current	Insulation performance
DD282	200%Ib	0.5%Ib	AC voltage 2KV for 1 min impulse voltage 6kV
DD284	400%Ib	0.5%Ib

Overall and mounting dimensions(mm)