MANUFACTURING
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STANDARDS
We manufacture transformers according to customer’s requirements corresponding to the following standards.
- IEC-76 (International Electrotechnical Commission)
- BSS-171 (British Standards Specification)
- ANSI-C-57.12 (American National Standards Institute)
- VDE-O532 (Verin Deutscher Elecktrotechnik)
RANGE
- Rated power range 5 to 5000 KVA
- Rated frequency 50\60 HZ
- Rated primary voltage range 11 – 22 – 33 KV or 10 – 15 – 20 – 30 KV
- Rated secondary voltage range 380 – 400 – 415 – 420 – 433 V
WINDINGS
- Windings are made from high conductivity.
- 99.95 percent pure, electrolytic copper conductor.
IMPEDANCE VOLTAGE
- IEC-76 (International Electrotechnical Commission).
- BSS-171 (British Standards Specification).
- ANSI-C-57.12 (American National Standards Institute).
- VDE-O532 (Verin Deutscher Elecktrotechnik)
HOW WE MANUFACTURE?
Transformers Core
Transformer cores are made from grain oriented, cold rolled, high permeability, silicon sheets with inorganic insulation on both sides.
Tank Fabrication
Trafolink tanks are fabricated from high grade steel sheets and plates. The additional cooling surface is provided by cooling tubes fitted in the form of coolers or headers. Individual cooler or header is tested at 20 PSI and the completed tank is checked at 15-18 PSI.
Painting
Inner and outer surfaces of tank are thoroughly cleaned, mill scale is removed and grease and other foreign matter are washed off. A clean and dry surface with sufficient roughness is achieved for the application of primer coat. All transformers normally receive one under coat one intermediate coat and one final coat of synthetic enamel paint. In general the color is grey but other color can be provided.
Conservator/Sealed Tank:
We manufacture both conservator type and sealed type transformers. In the sealed type construction inner air is not repelled out during load and no-load conditions. In the conservator type construction the conservator is connected to the tank cover by a pipe and is equipped with oil level gauge and silicagel breather. This allows the expansion and contraction of inner air of the transformer.
Porcelain Bushings:
The bushings are made from wet process porcelain, homogenous and free from all flaws. They are brown glazed, well vitrified, tough and impervious to moisture Permissible rating of neutral bushing is 100 percent.
Silicagel Breather:
Conservator type transformer is fitted with silicagel breather for inhaling and exhaling of air in the tank while the transformer is in operation.