Application

DD607 series single-phase inductive meters use long life technics to measure AC active energy with reference frequency 50Hz. This series use new international design and manufacturing skills to ensure excellent features.
This series has many excellent features such as reliable construction, stable performance, long life, wide load range ,high accuracy , low power consumption and nice appearance.

Normal operation and installation conditions

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

Construction features

1,Combinations of voltage components, current parts,damp parts with frame and the combination with meter base parts that adept reinforce fix that ensure the no-moving of the meter components;
2,High magnet performance(hard to be oxided), high stable magnet bearing. leading parts use imported graphite bearing and high rigidity stainless steel pin to form long-life rotating parts to ensure high stability and long life of meters.
3,Damp alnico use high magnet material(AlNiCo37) which has better temperature compensation features.
4,Main magnet components use vaccum thermal treatment to ensure magnet consistency.
5,Smooth calibration curve,small change for error causecl by effective rate change.
6,No adjustment needed for starting with no-load;
7,Excellent voltage coil material(can withstand Uimp more than 6kV);
8,No danger under normal operational condition.

Main technical parameters

1,Conform to GB/T 15283-1994 and IEC 521-1988 standard;
2,Class index:2;
3,Reference voltage:220V,230V,240V;
4,Reference frequency:50Hz;
5,Power consumption of voltage circuit: less than 1W(and less than 1.5VA);
6,Starting current:0.5%Ib;
7,Uimp(withstand shock voltage):1.2/50ms, peak value:6kV, no damage after 10 times test;
8,Out-construction and endurance:
a,Metal base and transparent plastic meter cover(using life more than 15 years);
b,Phenolphthalein base and polycarbonate meter cover(using life more than 25 years)
9 ,Main current specifications:1.5(6)A,2.5(10)A,5(20)A,10(40)A,15(60)A,20(80)A,5(30)A,
10(60)A.