The D66- φ/4 1.0 level three-phase power factor meter is a portable laboratory instrument used to measure the power factor of three-phase symmetrical AC circuits with a frequency of 50Hz. The principle of the ratio meter for instruments is composed of two frameless moving frames fixed on the rotating shaft of the movable part, intersecting at a 60 ° angle. Adopting air damping and gemstone shaft tip structure. The measuring institution is protected by a double-layer magnetic shielding, which uses high permeability iron nickel alloy for shielding. All features of this table fully comply with the IEC51 international standard and the GB/T7676.5-1998 national standard.

D66- φ/4 Type 1.0 Grade Three Phase Power Factor Meter for Electric Power System