It is composed of electromagnetic element,moving disc, bearing, dsmping magent steel,counter,and regulator equipment etc. The electromagnetic element employing divided formation are in horizontal position.The voltage cores of semi-enclosed and plug-in type are used.The current element is made of large section of copper wire around the seperate silicon steel cores and insulated by epoxy coat which can bear more than 6KV pulse.Meanwhile,it adopts two -stage compensation to have wide load property.The voltage coil rounded by high electricity conduction copper wire and plastic-enclosed in the whole,which can bear pounding of instance large voltage.To ensure the long-life of meter ,double-jewel or magnetic bearing is used in bearing system.limitation cornudum is set on the driving axle of the register to reduce friction and keep stability of data.Frames are made of aluminium alloy by die casting and have undergone heating and cooling processes,so have good mechanism characteristic.The biplolar aluminium nickel cobalt damping magnet steels have coercivity,stable magnetic properity.

National united designation,well-knit structure and design,compactness,large range load,long lifetime,low power consumption,good consisteney;stable,relible and easy to maintain.

When the kilowatt-hour meter connected into electric circuit the magnetometive caused by voltage and current coil,pass through disc,these magnetonetive of different phase in time and space inducted vortex on disc respectively.For mutual function between magnetometive and vortex produced rotating torque to make disc rotate.The operation of magnet steel makes the disc rorate at average speed.The disc moves in positive proportion with load current under its effect,because magnetometive is in positive proportion with voltage and current in electric circuit.Disc rotation into register by worm,the digital display on register is real used energy in circuit.