Idel transformer

Step down transformer

Step up transformer

Instrument transformer

440 V

11000 V

660 V

110 V

2 Amp

3 Amp

4 Amp

5 Amp

Remove the earth of CT

short the secondary of CT

Opened the secondary side of CT

Switch OFF total supply

Protect the transformers from surge

For short circuit protection

For open circuit protection

For leakage protection