The product mainly consists two parts,combined mutual-inductor and watt-hour meter tank.The former is made up of two or three single-phase voltage mutual-inductors and current mutual-inductor,which adopts 25#mutual inductor oil as insultaing medium and whose primary and secondary line ends are both installed on the panel by porcelain bushing.Watt-hour meter tank is fixed on the flank of combined mutual-inductor and comprise one active watt-hour meter and reactive watt-hour meter,which has high-precision measurement,light weight,convenient installation and electricity theft resistance.The power measuringtank is applicable to three-phase system net with rated voltage of 6,10,35KVand rated frequecy of 50HZ.1.Ratevoltage:6kv,10kv,35kv 2.Accurate Grade:0.5 and 0.2 0.5s and 0.2s 3.Rated Ratio:ratio-voltage 6000/100 10000/100 35000/100 ratio-current 5~~~300/5(high ratio-current can be set)