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Insulation structure of oil-immersed transformers

2025/12/23

Insulation structure of oil-immersed transformers

Transformer insulation can be divided into internal and external insulation, internal insulation refers to all parts of the tank insulation, external insulation refers to the upper part of the casing to the ground and the insulation between them. Internal insulation can be divided into two parts: main insulation and longitudinal insulation.

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Breakthrough! World-first ±1,100 kV live-line work carried out in Anhui

2025/10/28

Breakthrough! World-first ±1,100 kV live-line work carried out in Anhui

On October 31, State Grid Anhui Electric Power employees successfully completed live-line work on a ±1100 kV ultra-high-voltage transmission line at an altitude of 111 meters in Nangang Town, Shucheng County, Lu'an City, Anhui Province. This milestone marks the official entry of live-line operations into the ±1100 kV domain.

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The wind power industry is riding the "wind" of growth: Affordable grid parity is just around the corner, driving steady industry expansion.

2025/09/26

The wind power industry is riding the "wind" of growth: Affordable grid parity is just around the corner, driving steady industry expansion.

Recently, Fujian's first 220kV offshore booster substation "settled" at the Three Gorges Group's Fuzhou Xinghua Bay Offshore Wind Farm. The photo shows China's first SVG dynamic reactive power compensation system installed atop an offshore booster station—also currently the most highly integrated and one of the largest and heaviest offshore substations in the country.

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Skills Light Up Life: The First "Schneider Electric Cup" Electrical Installation Application Technology Competition Successfully Held

2025/09/26

Skills Light Up Life: The First "Schneider Electric Cup" Electrical Installation Application Technology Competition Successfully Held

Beijing, China – November 4, 2019: The "Schneider Electric Cup" Electrical Installation Application Technology Competition of the 2019 National Vocational Education Skills Contest for the Machinery Industry successfully took place at Nanjing Technician College on November 2–3. The event drew 52 student teams representing 32 vocational colleges from across the country. Among them, four teams from Nanjing Technician College and Kaifeng Technician College clinched first place in the secondary vocational group, while one team from Xinxiang Technician College claimed the top honor in the higher vocational category.

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Henan Wanjin Electrical Equipment Co., Ltd.
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Henan Wanjin Electrical Equipment Co., Ltd.

Phone:+86-377-62178288

E-mail:hnwjdianqi@163.com

Address: Nanyang New Energy Technology Entrepreneurship Park, Songshan Road, Wancheng District, Nanyang City, Henan Province

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