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Premium-quality transformer fittings, bushings, hardware and critical components engineered for high reliability and long operational life. Manufactured to match global electrical and mechanical standards.
Our Transformer Accessories Division supplies a complete range of precision components required for power and distribution transformers. Each accessory is designed for performance, durability and safety under demanding operational conditions.
From fittings to bushings and mechanical hardware, every product is manufactured using high-grade materials and strict quality checks to ensure flawless operation in transformer assemblies.
Explore our complete range of transformer accessories engineered for protection, high performance and long operational life.
Electrical insulation materials are a vital part of transformers, as they must withstand the operating temperatures that occur during the transformer’s operating life. The lifetime of a transformer depends on the reliability of the insulation used. Hitachi Energy pays particular attention to the manufacturing systems and processes used and continues to improve product quality and reliability by investing in modern equipment and experienced people. Offers a broad range of insulation components, kits and materials for distribution and power transformers, liquid-filled and dry-type.
High-density insulation pressboard used in winding support, spacer blocks and major insulation structures.
Complete insulation kits designed for winding assembly and transformer insulation support.
Insulation winding kits comprise all the necessary components for assembling a winding. The aim of the winding kit is to have the insulation parts at hand or pre-mounted when manufacturing and assembling windings.
Insulation components made from pressboard - such as angle rings (segments), chimney segments, and molded parts in the expelling area - allow optimal adaptation to the electric field conditions in the transformer. Our insulation components are suitable for use in oil-filled power transformers due to their high purity, mechanical strength, and ability to be impregnated with oil.
Insulation components for oil-filled distribution transformers stand out for their high purity, mechanical strength, and oil impregnability.
Hitachi Energy offers a wide range of flexible insulating laminates for dry-type transformers, both vacuum-cast resin and open wound.
Choke windings in shunt reactors require similar insulation components to power and distribution transformers. These are manufactured from a pressboard and used for insulation, cooling channels, and mechanical support in compensating chokes.
High-purity, hydro-cracked transformer insulating oils engineered for reliable dielectric strength, oxidation resistance and long service life across all transformer applications.
ELECTROL® Series of Uninhibited Transformer oils are severely refined hydro-cracked / hydro-treated virgin mineral insulating oils with the highest degree of purity and stability. These oils are produced from carefully chosen blends of advanced technology feed stocks.
They are recommended for equipment where normal oxidation resistance is sufficient. For higher oxidation demands or elevated temperature operations, consider the ELECTROL® Inhibited or ELECTROL® Inhibited High Grade variants.
These uninhibited transformer oils follow the same high-purity refining process using hydro-cracked / hydro-treated mineral oils. Manufactured with selected feed stocks, they offer excellent stability and consistent dielectric performance.
Suitable for equipment where standard oxidation resistance is required. For more critical applications, ELECTROL® Inhibited variants are recommended.
ELECTROL® U provides extremely pure uninhibited insulating oil derived from severely refined hydro-cracked virgin stocks. Offers dependable dielectric strength and excellent chemical stability.
Ideal for standard oxidation environments; for high-temperature applications, ELECTROL® Inhibited oils are recommended.
ELECTROL® X oils are inhibited insulating oils providing superior oxidation stability and a long operational life. Manufactured with hydro-cracked / hydro-treated virgin mineral oils, they offer high dielectric strength and excellent aging performance.
Suitable for transformers operating at elevated temperatures or requiring enhanced oxidation resistance.
Premium inhibited transformer oils designed to provide exceptional thermal stability and oxidation resistance. Produced using advanced hydro-cracked and hydro-treated refining, ensuring purity and longevity in high-stress applications.
Recommended for industrial and utility-grade transformers requiring maximum reliability and reduced oil degradation.
High-stability inhibited transformer oil offering enhanced oxidation performance and extended service life. Produced from judiciously selected hydro-cracked feed stocks for superior purity.
Ideal for demanding transformer environments where long-term stability is crucial.
ELECTROL® Naphthenic grade insulating oils are produced using state-of-the-art technology in ISO certified facilities supported by NABL accredited laboratories.
Manufactured from severely refined hydro-cracked / hydro-treated virgin oils, they provide excellent purity, oxidation stability and extended equipment life—ideal for high-criticality transformers with long operational cycles.
Electrol naphthenic oils meet various International, National, Utility and OEM-specific specifications.
High-performance HV/LV bushings providing safe current conduction and reliable insulation between internal & external circuits.
AMP – 250 , 630 , 1000, 2000, 3150
AMP – 250 , 630 , 1000, 2000, 3150
AMP – 250 , 630 , 1000, 2000, 3150
High-sealing gaskets ensuring zero leakage between flanges, lids and radiators, even under thermal expansion.
