Powertek Transformers are designed as per IS: 2026, IS : 1180
Transformers will be connected as per group reference Dyn 11. Other groups can be offered as specific requirements.
Transformers are designed for a maximum rise of 50/55 degree C of oil/winding, lower temperature rise can be offered on request
A. Off Circuit Tap Changing Switch
Tapping from +5% to -5% in step of 2.5% HV vari oras per customer’s requirement
B. OnLoad Tap Changer +5%to+15% 1.25%
All gaskets used for making oil tight joints to be with cork as base banded by oil resisting synthetic material or rubber. Neroprene rubber is used for oil tight joints for HV & LV terminals. The gasket conforms to5:4253, Part-Il-1980 (Reaffirmed 1990) NC777.RC70C.
Tapping range as per specific requirement can be. offered OLTC for remote/auto/ parallel operation
Our Transformer undergo rigorous quality control checks and are routine tested as per IS in our full equipped laboratory. Any specific test required by the customer can also be arranged.
Note: Transformer with other rating, voltage ratio, vector group, terminal arrangement can be supplied as per costumer requirements. Fitting like Cable Boxes, Gas Operated Relay MOG, WTI, Marshelling Box can be provided as per requirement.