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. Potential transformer testing unit compares & reads the error due to imbalance in signals of test p.T. With reference p.T. And applies necessary proportional signal to nullify the error. The following are its key features:
1. input is displayed in percentage or actual value, and phase error in centi radians or minutes.
2. micro processor controlled
3. self zero check and calibration check
4. digital display of %input, ratio error and phase error.
5. programmable voltage input
6. manual and auto ranging modes
7. rs 232c port and parallel port for printing
8. built in real time clock
9. parameter entry through keyboard
10. numeric keys, decimal point key, enter key etc keys included
11. 4digit led display to indicate input voltage, ratio error and phase error.
