I. Overview

XGN15-12 AC high-voltage sulfur hexafluoride ring network switchgear (hereinafter referred to as ring network cabinet) is a new generation of high-voltage electrical appliances successfully developed by Daya Electrical Appliances Group by introducing foreign advanced technology and in accordance with the requirements of domestic home appliances and urban power grids. product. After strict type testing and long-term trial operation assessment, all technical performance indicators have reached IEC298 and GB3906 standards. The main switch, operating mechanism and components of the unit cabinet adopt FLN36-12D SF6 switch equipment independently produced by Daya Electric Group. It can also be equipped with ABB's original HAD/US SF6 circuit breaker or VD4-S vacuum according to user needs. The operation mode of circuit breaker is divided into HAD manual and electric. The cabinet is made of aluminum-zinc plate processed by CNC machine tools and then riveted. The protection level reaches IP3X and has reliable mechanical interlocking and anti-misoperation functions. This product has significant features such as small size, light weight, beautiful appearance, easy operation, long life, high parameters, no pollution, and low maintenance. It is widely used in industrial and mining enterprises, high-rise buildings, residential areas, schools, etc. as ring network power supply and terminal power distribution in 10KV power distribution systems. The ring main unit is equipped with a sulfur hexafluoride load switch or a sulfur hexafluoride load switch and fuse combination appliance that can make and break the rated load current, make the rated short-circuit current, and break the no-load current of the transformer. The combined appliance is equipped with The fuse can break 31.5KA short-circuit current at one time, playing a control and protective role in the power system.

二、Model meaning

X G N 15－12 FR

│ │ │  │   │  │

│ │ │  │   │  │

│ │ │  │   │  └──────SF6Load switch-fuse combination electrical appliance  

│ │ │  │   └───────Rated voltage（KV）

│ │ │  └─────────Design Number

│ │ └──────────Indoor

│ └───────────Fixed

└────────────Box type

 3. Advantages:

The XGN15-12 unit type ring network switch cabinet produced by Daya Electrical Appliance Group is made of aluminum-zinc plate and riveted after processing with CNC machine tools. It is more beautiful in appearance, stronger and more stable in performance than traditional enterprise products. And because SF6 ring network cabinet has many advantages such as small size (width 375mm × height 1400 × depth 980mm), simple structure, maintenance-free, reasonable price, etc., it is deeply favored by the market. Daya Electric Group has users in more than 30 provinces and cities in China except Tibet and Taiwan: in Beijing, Shanghai, Tianjin, Chongqing, Guangzhou, Chengdu, Shenyang, Wuhan, Xi'an, Hunan, Zhejiang, Jiangsu, Shandong, Shanxi and other places Widely used and unanimously praised by users.

4. Switch cabinet structure

Note: XGN15-12 unit type sulfur hexafluoride ring main unit consists of the following 4 parts:

① Busbar room ② Main switch ③ Cable room ④ Operating mechanism, interlocking mechanism and low voltage control

①Busbar room

The busbar room is arranged in the upper part of the cabinet. The main busbars are connected together in the busbar room and run through the entire row of switch cabinets.

②Load switch

There is a sulfur hexafluoride load switch (FLN36 or FLN56) installed in the switch room. The shell of the load switch is made of cast epoxy resin and is filled with sulfur hexafluoride (SF6) gas.

It has an edge medium and an observation hole on the casing. The switch room can be equipped with an SF6 gas density meter or a gas density device with alarm contacts according to customer requirements.

③Cable room

The load switch cabinet has a spacious cable room, which is mainly used for cable connection, so that single-core or three-core cables can be connected using the simplest unshielded cable heads.

connection, and the ample space can also accommodate components such as lightning arresters, current transformers, and lower grounding switches. Designed according to standards, the cabinet door has an observation window

and safety interlocks. The cable compartment floor is equipped with a sealing cover and suitably sized cable clamps with supporting frames. The bottom plate and door frame of the cable room can be removed to facilitate cable installation.

④Operating mechanism, interlocking mechanism and low-voltage control room

The interlocked low-pressure chamber also serves as a control panel. The low-pressure chamber is equipped with a spring operating mechanism and a mechanical linkage with a position indicator.

The lock device can also be equipped with auxiliary contacts, trip coils, emergency trip mechanisms, capacitive live indicators, key locks and electric operating devices.

The low-voltage room space can also be used to install control circuits, measuring instruments and protective relays. The 750mm wide cabinet is equipped with two identical low-voltage rooms, which can accommodate more accessories.

The entire XGN15 switch cabinet can be divided into upper and lower parts. The upper part of the cabinet includes the busbar room, load switch, operating mechanism and low-voltage room, and the lower part of the switc