DD949(S) Single-phase watt-hour meter (round s ℃ket) 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.

Its cassette mechanism is the same as DD949 meter, and its dimension is designed as per American standard.

Structure

     1.Case: round bakelite base and round transparent glass cover;

     2.Bearing: magnetic bearing or double jewel bearing;

     3.Register: wheel type, six digitals;

     4.Frame: molded aluminum alloy;

     5.Braking component: Al.Ni.Co double pole magnet, has two types of dividing magnet including adjusting board type and adjusting screw type;

     6.Driving component: unitary rivet type voltage steel core, revolving phase plate type phase adjustment, handle type and adjusting screw type light load adjustment;

     7.It's designed as per the most advanced technicwith reasonable construction, beautiful appearance, stable performance, low consumption, high overload of 6.67 times load.

Main Technical data

Reference voltage	110V, 120V, 220V, 230V, 240V
Frequency	50Hz or 60Hz
Basic current (rated max, current)	15(60)A, 15(100)A, 20(120)A
Class	2
Voltage circuit consumption	1W  6VA
Current circuit consumption	2.5VA
Basic speed	9 r/min
Torque	4.5×10-4N·M
Weight of rotor	24g
Weight of meter	1.5kg
Standard	IEC62053-11, GB/T15283-94