The EPA are used for power factor (cos φ) measurement. There are versions for single-phse and three-phase AC, for balanced. neutral. The frequency is 50 or 60 Hz. They embody a moving-coil movement with electronic transducer. All of them are equipped with eddy-current damping, pivot suspension and spring-loaded jewel bearings for vibration and shock resistance.
Scale - 240º
Class - 1.5
Dimensions in mm - 72 x 72 / 96 x 96 / 144 x 144
Scales
Non-linear 240º scales. Coarse-fine division. The EPA can be furnished with scales covering phase angle spans from 90 up to 260 electric degrees.
Standard scale execution:
cap. 0,5-1-0,5 ind.
cap. 0,8-1-0,3 ind.
cap. 0,8-1-0,8 ind