Automatic electric ltd. Is engaged in manufacturing electrical instruments, power systems and instrument transformers in india. The company has been accredited with an iso 9001 certification. The digital power factor meter incorporates solid state circuitry with micro-controller to measure power factor of single phase and three phase system. The following are its salient features:
1. the meter does not require external transducer, hence panel wiring is reduced.
2. absence of current is indicated by "err"
3. negative sign indicates lagging p.F.
4. single phase/three phase single element type
5. operating voltages are
63.5v/110v/240v/440v., 2va.
6. has a resolution of 0.001
7. accuracy is ± 2deg