KEL Transformers

Transformer Range:100kva - 5MVA; 33kV classCore: 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 classTAPS: 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.ASSEMBLY: LV winding is placed next to the core and HV winding is placed condentrically around the LV winding. Press board and Kraft paper are used for insulation. The inter-turn and lnter - layer insultions are designed for specific impulse level. Special care and attention is given for the insulation between HV and LV winding and LV winding and core. After assembly of the coils, they are dried in electrically heated drying oven and allowed to shrink ao that the dimensions do not change during service.TERMINATIONS: The terminal arrangements are provided as per customers requirements.PRODUCT RANGE: Oil filled off- circuit distribution transformers.Oil filled on load tap changer(OLTC)transformer with voltage regulater.And remote tap changing cubicle(RTCC)Oil filled auto transformers.Amorphous transformers.Dry type transformers(resin impregnated)Unitised substations with oil filled or dry type transformers.The Transformers are certified by "Central Power Research Institute"based in Bangalore.List of Major Customers of KEL transformers are 1) National Electric Co   (3000 KVA)2) Federal Transformers AbuDhabi  (1500 KVA)3) Bhaba Atomic Research Center Mumbai(500 KVA)4) National Thermal Power Corporation Bharuch (1600 KVA).5) Bharth Electronics LTD Bangalore.(1000 kva)6) Karnataka Power Corporation(1600 KVA).7) ONGC (Oil & Natural Gas Commisioner Rajamahendry) (1250 KVA)8)NTPC9)Sothern Railways10)ISRO