... 60x70 mm, 60x60 mm, 50x50 mm, other round type meter Panel meter is one kind of electric measure indicator with the direct ... 3. Outside mechanical applied force withstand: common type 4. Insulation strength Arcsine 50Hz, 2kV/2min. There should be no feed-through ... torque equality ANNAI series frequency active reactive power, power factor meter are adjustable current type. The construction is made of ...