DT607、DS607 series three-phase inductance type meters(long life technics)

DT607、DS607 series three-phase inductance type meteres are used to measure active energy with reference frequency 50Hz. features: low power consumption, high stability, long life.

1、Specified operation temperature range：-25℃～55℃;
2、Limit operation temperature range：-40℃～70℃;
3、Relative humidity : less than 85%(ambient temperature is 23℃);
4、No corrosive gas and dust-proof, no mildew, no insects.

1、Rotating parts use long life technics:a、use oxidation-proof magnet bearing, no abrasion. b、fixed bearing on and under rotating axis(imported from german) c、use high strength and high rigidity material for up-down bearing pin; d、rotating axis and worm in a same axis to ensure long life operation(more than 25 years).
2、Electranagnetic system uses new construction: voltage and current coil are all fixed on a iron frame to ensure stability.
3、Braking components use new construction and high magnet-accumulating material( LNG37 permanent magnet alloy) to ensure stability；
4、Use excellent material for voltage coil(can withstand Uimp more than 6kV；
5、High accuracy of register to ensure long life.
6、Base and terminal block use high insulation and burning-proof material;
7、Use polycarbonate as cover to ensure good transparent effect and high strength.

1、Conform to GB/T 15283-1994 and IEC 521-1988 standards;
2、Class index：2;
3、Reference voltage：3×220V / 380V、3×380V、3×100V;
4、Ib and Imax：3×1.5(6)A、3×3(6)A、3×5(20)A、3×10(40)A、3×10(60)A、
3×20(80)A、3×30(100)A;
5、Power consumption：less than 1.5W and 2VA under reference voltage,current and frequency;
6、Start-up: under the condition of the referenced pressure, referenced frequency and cosΦ=1,and the load circuit doesn't exceed the 0.5% of the basic circuit, the ammeter's rotor can be started up and constant turning.
7、Potential action: the ammeter's rotor turns without exceeding one cycle when its line has no electric current and the pressure is 80%～110%of the reference.
8、Dielectic properties conform to GB / T 15283-1994.