2022-07-02
The design of the gas-filled cabinet provides two options for the protection of the transformer: load switch-fuse combination and circuit breaker with relay protection. As the preferred ring network unit, the gas-filled cabinet can provide a complete set of integrated remote control and monitoring units. The ring network cabinet adopts standardized components such as load switches, SF6 or vacuum circuit breakers, earthing switches, transformers and secondary components. Through the combination of these standardized components, the ring main unit can be widely used in different occasions.
2022-07-02
(1) The shell of the inflatable cabinet is welded into a completely airtight structure, which excludes the influence of environmental factors. The insulating strength of SF6 gas is 2. times that of air, thus obtaining the advantage of saving space, reducing the building area, and achieving good economic benefits. (2) Using laser welding technology to prevent SF6 insulating gas from escaping and moisture intrusion. This laser welded gas-filled cabinet meets the requirements of IEC60698 and VDE0670 part 1000 for airtight pressure systems.
2022-07-02
"By 2050, the global energy Internet will be built, the proportion of global clean energy will reach more than 80%, carbon dioxide emissions will return to half of the level in the 1990s, and the global temperature rise will be controlled within 2 degrees Celsius." Yesterday, the development of the global energy Internet Liu Zhenya, chairman of the cooperation organization and chairman of the China Electricity Council, put forward the above-mentioned development goals at the high-end forum on the global energy Internet—the first anniversary of the China Initiative. (Global Energy Internet Development Cooperation
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State Grid's policies and regulations on solid insulation ring network cabinets
On August 31, 2011, the State Grid Corporation of China issued the "National Grid Corporation of China's First Batch of New Technology Catalogues for Key Plants" (State Grid Division [20111286]), the document pointed out: "From the development of more stringent technical reliability and environmental protection requirements In terms of trends, solid insulation ring network cabinets have a tendency to completely replace SF6 gas insulation ring network cabinets. However, the process requirements of solid insulation ring network frames are higher than those of SF6 gas insulation ring network cabinets. failure probability, danger
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【Product introduction】The improvement policy for the inflatable cabinet in the future
In recent years, more and more prefabricated substations have been used in the transformation of urban power grids and 12kV terminal substations in rural power grids in high-altitude areas of western my country, which are not only convenient for construction and installation, but also do not require too much land for building. Its technical parameters and functions, as well as major equipment such as c-gis, mostly conform to the national standard GB/T17467. The regulations in 1998 promoted the development of power grid technology and equipment, and were welcomed by the operating department. But there are also some 12kV pre-installed high-voltage power distribution devices and integrated substations
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Knowledge points about high voltage switchgear
High-voltage switchgear (also known as complete switchgear or complete set of power distribution devices): electrical equipment mainly based on circuit breakers; refers to the manufacturer, according to the requirements of the primary electrical wiring diagram, the relevant high and low voltage electrical appliances (including control appliances, Protective appliances, measuring appliances) and busbars, current-carrying conductors, insulators, etc. are assembled in closed or open metal noble bodies as devices for receiving and distributing electrical energy in power systems. 1. Normal use conditions of high-voltage switchgear 1. Ambient temperature: weekly
2022-07-02
