Development in Transformer Technology - Prof. V.G. Patel

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Explore new developments in transformer technology presented by Prof. V.G. Patel, including innovations like Hi-B ultra-low core loss electrical sheet steel, SF6 cooling, polymeric insulators, controlled switching, and more. Discover the latest advancements that enhance transformer efficiency and longevity.

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Uploaded on Apr 19, 2025 | 0 Views

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New development New development Transformer Cooling of in Transformer in Transformer Transformer Oil Main Parts Transformer Technology Technology PRESENTED BY PROF. VG PATEL VG PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY New development {23ZDKH90 / Hi-B (Laser Scribed) ultra low core loss electrical sheet steel, laser irradiation to reduce the width of magnetic domain. Step lapped construction for energy saving.SF6 cooled Transformer, Polymeric Insulator in place of Porcelain Insulator, Plug-in connection in place of cable box, Controlled Switching of Transformer Breaker, Transformer life extension using ON LINE Transformer dry out system using super dry cartridges, without heat or vacuum, ensuring dry oil with normal characteristics and enhanced IR value of the insulation system of the Transformer}. in Transformer Technology Saturday, April 19, 2025 2 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY Distribution winding withstand capability. Open ventilated dry type vacuum pressure Transformer having numerous advanta- ges over resin cast transformers. Amorph- ous core technology. Hermitically sealed type construction. Corrugated tank. Transformers having ------- short Foil better circuit impregnated Saturday, April 19, 2025 3 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY SF6 cooled Transformer Saturday, April 19, 2025 4 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY Polymeric Insulator in place of Porcelain Insulator Saturday, April 19, 2025 5 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY 23ZDKH90 / Hi-B (Laser Scribed) ultra low core loss electrical sheet steel, laser irradiation to reduce the width of magnetic domain. Saturday, April 19, 2025 6 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY Plug-in connection in place of cable box Saturday, April 19, 2025 7 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY Controlled Switching of Transformer Breaker Saturday, April 19, 2025 8 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY Corrugated tank for DT Saturday, April 19, 2025 9 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY Amorphous core technology for DT Saturday, April 19, 2025 10 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY GRADES OF CRGO STEEL In India, Distribution transformer are manufactured using 0.27 M4 CRGO steel. The following changes in grades are suggested in order to minimize losses. a) CRGO - 0.27 M4 replaced by HI-B-0.27 MOH (Effecting reduction of losses by 16%) b) HI-B-0.27 MOH replaced by HI-B-0.23 MOH (Effecting reduction of losses by 8%) Saturday, April 19, 2025 11 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY c) HI-B-0.23 replaced by Laser grade 0.23 ZDKH (Effecting reduction of losses by 8%) d) Laser grade 0.23 ZDKH replaced by Amorphous metal (Effecting reduction of losses by 42%) By using better Grades of steel, the losses can be reduced by (16 + 8 + 8 + 42 = 74%) from that of the Conventional core transformer designed with 0.27 M4 Grade CRGO steel. Reduction of Losses not only minimizes the running cost, but also helps to reduce the Core frame size, thereby reducing the cost of winding as well as the cost of Oil. Saturday, April 19, 2025 12 PROF. V. G. PATEL

TRANSFORMER ENCYCLOPAEDIA NEW DEVELOPMENT IN TRANSFORMER TECHNOLOGY Transformer life extension using ON line Transformer dry out system using super dry cartridges, without heat or vacuum, ensuring dry oil with normal characteristics and enhanced IR value of the insulation system of the Transformer. Saturday, April 19, 2025 13 PROF. V. G. PATEL