Open/ Closed Type Isolation Transformer has rating ranging from 1 KVA to 500 KVA, 50 Hz and has input voltage range from 230 v/ 240 V AC nominal to 400 v, 415 V AC nominal. The Transformer has dielectric strength of 3 KV for 60 seconds. The Transformer has operating temperature ranging from 0 ° C to 45 ° C. The Open/ Closed Type Isolation Transformer isolate sensitive equipment from noisy power lines and come complete with electrostatic shielding.