DD949（G）Single-phase watt-hour meter is used to measure electric power in single-phase 50Hz or 60Hz AC circuit. It should be fixed to use with the limited working temperature of －30℃～＋55℃ and  the relative humidity of not exceeding 95%, and without the corrosive gas and  salty spray in the air.

It is manifested by long-life design, passed the test

of  China electrical  industrial power instruments and the inspection centre, and passed the Kema certificate.

Structure

      1.Case: one-piece steel or molded aluminum alloy base,transparent glass cover or transparent PC cover, extended the terminal cover;

      2.Bearing: magnetic bearing or double jewel bearing;

      3.Register: wheel type, five or six digitals, has the function of unidirectional, jumping, return to zero setting, low friction designed wheels;

      4.Frame: complete unitary steel frame or molded aluminum alloy frame;

      5.Braking component: AI.Ni.Co double pole magnet, screw adjustment dividing magnet.

      6.Driving  component: unitary revit type voltage steel core, handle type light load adjustment, revolving phase plate type phase adjustment;

      7.It's designed as per the most advanced technic with reasonable construction, beautiful appearance, stable performance, low consumption, high overload of 4 times load.

Main technical data

Reference voltage	110V, 120V, 220V, 230V, 240V
Frequency	50Hz or 60Hz
Basic current (rated max, current)	1.5(6)A, 2.5(10)A, 5(20)A, 10(40)A, 15(60)A, 20(80)A, 30(100)A, 2.5(15)A, 5(30)A, 10(60)A, 15(100)A
Class	2
Voltage circuit consumption	1W  6VA
Current circuit consumption	2.5VA
Basic speed	4 times: 12.28 r/min    6 times  9.9 r/min
Torque	4.5×10-4N·M
Weight of rotor	24g
Weight of meter	1.4kg
Standard	IEC62053-11, GB/T15283-94