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 phase sequence indicator offered by ae is a rotating disc type instrument. The following are its distinct features:
1. it is an electro-mechanical type instrument
2. operating voltage 50v to 500v ac
3. frequency 25 hz to 60 hz.
4. insulation resistance is greater than 20 mohms at 500v dc
5. dielectric strength is 2kv rms for one minute
6. operating temperature range is -10°c to 55°c
It is suitable for use in horizontal position and should not be left in circuit. Three, 1 meter long red, yellow, blue colour leads with clips and sheaths are provided.