Fully insulatedFully Enclosed inflatable cabinetsIs the use of welding, inflatable, leak detection technology manufacturing stainless steel fully insulated fully enclosed inflatable switchgear. It does not have multiple intervals in the form.

(1) Metal enclosed armored inflatable cabinets (expressed in letter K) The main components (such as circuit breakers, transformers, Busbar, etc.) are installed in metal closed grounding switchgear separated by metal partitions respectively. For example, KYN28A-12 high-voltage switchgear.

(2) Metal closed interval inflatable cabinets (expressed in letter J) are similar to armored metal closed switchgear. Its main electrical components are also installed in separate compartments, but it has one or more non-metallic partitions that meet a certain level of protection. For example, Jyn2-12 high-voltage switchgear.

(3) Metal closed box type inflatable cabinet (in letter X), switchgear shell for metal closed switchgear. For example, XGN15-12 high-voltage switchgear.

(4) Open the inflatable cabinet, no protection level requirements, part of the shell for the open switchgear. For example, the GG-1A (F) type high-voltage switchgear.

Inflatable cabinets are divided into four categories: Metal closed armored inflatable cabinets, metal closed interval inflatable cabinets, metal closed box inflatable cabinets and open inflatable cabinets.

Select Type 1

(1) Mainstream choice of imported products

Customers choose the most C-GIS cabinets, accounting for the total demand of 70-85%, followed by Siemens, Areva and other cylindrical products, and 72.5 kv above the GIS similar. The choice is focused on 8 major market-leading products such as Siemens, ABB and Areva (formerly Alstom), Tamco Malaysia, Korean Hyundai and Japanese AE. These manufacturers have their own companies or joint ventures in China, their products have been serialized, and free of many design practices and habits, forming their own unique design concepts and design style. For example, the C-GIS of some European companies is very striking. It not only meets the requirements of complex network nodes or user terminals, but also meets the need for flexible use of compact switchgear in a variety of two substations, thus increasing the number of users. In addition, because the quality of China's power grid can not meet the requirements of international first-class, the instability of the power grid requires C-GIS to increase the rated parameters, enhance the insulation of the product. At present, the user in the 10,000 KV power supply network using C-GIS, and more than 12,000 KV rated voltage switch cabinet.

(2) Mainstream choice of domestic products

As a result of C-GIS on the process equipment requirements, processing difficult, domestic enterprises through the introduction, digestion, cooperation and development of a group of suitable cabinets C-GIS. It not only passed the type test, but also entered the mass production. Some of them have formed a series, such as: Sigosso, Siansen source, Zhenjiang Longyuan, Tianshui Great Wall, Shanghai Tian Ling (see table 2), Shunde, Guangdong, etc., the use of sealed pressure system and protection measurement and control technology of new products, online insulation aging detection technology and temperature RIS. Wireless sensor technology, so that the condition monitoring and fault diagnosis technology of C-GIS has been improved qualitatively, which has aroused people's special attention.