Kel Transformers By Chola Turbo Machinery International Pvt Ltd

Transformer Range:100kva - 5MVA; 33kV class
Core: Special non aging CRGO silicon steel laminations are used for the cores. The core laminations are interleaved clamped and taped to reduce vibration and noise as well as to provide excellent mechanical strength. Eddy current losses are reduced by coating the laminations with suitable insulation. The cores are effectively earthed.

Windings:
Coils are wound with electrolytic, high conductivity, paper covered with copper conductors. Spiral disc and cross over types of windings are used giving due consideration to the thermal, electrical and mechanical aspects. Strong self supporting coils are made by anchoring the turns using tapes. Adequate horizontal and vertical ducts are provided to ensure that the temperature gradient between the windings and oil do not exceed the limit and no hot spots are developed.
Transformer Range:100kva - 5MVA; 33kV class

TAPS: Tappings are normally provided in HV windings at +/- 5% of the rated voltage in steps of 2.5%. However, any other tap range as per customer specification can be provided.


OIL: Transformer oil confirming to IS:335 is used as the coolant and insulating medium. The transformer are supplied after topping it up with filtered transformer oil.