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SF6 type metal enclosed insulation series ring main switchgear uses SF6 gas as arc extinguishing and insulation medium;
The switchgear is a fully sealed and insulated structure; The busbar, switch, and live parts are completely enclosed in a stainless steel casing. The chamber is filled with SF6 gas at 1.4 bar, with a protection level of IP67; The entire switch device is c
The switchgear has a complete five prevention interlocking device, which completely eliminates personnel and equipment operation failures that may be caused by human error;
All switch cabinets have reliable safety relief channels, which can ensure the personal safety of operators even in extreme situations;
Switchgear is divided into two types: fixed unit combinations and expandable unit combinations; Switchgear usually has front incoming and outgoing lines, and can also be installed in different positions to achieve side outgoing lines or side extensions;
The cabinet size is small, easy to install, and can be suitable for places with limited space and poor environmental conditions;
The switchgear can be equipped with electric, remote control, and monitoring devices according to different user needs.
Product Description：
The SF6 metal enclosed insulation series ring main switch cabinet is a new type of fully sealed series switch product developed by our company using computer simulation technology and years of product design and manufacturing experience. The SF6 metal enclosed insulation series ring network switchgear is a fixed ring network main unit structure that can be combined with up to 15 fixing methods; Each fixed inflatable chamber can be configured with 6 unit modules.
Sf6 metal enclosed insulation series ring main switchgear is a compact and expandable switchgear, which can be configured with up to 6 unit modules in the same inflatable chamber; The top of each unit busbar room can be connected to another inflatable switch unit through a fully sealed busbar. It can be expanded into several sets of combination units with different functions.
Application field：
The SF6 type metal enclosed insulation series ring main switchgear is suitable for AC 50Hz, 12kV power systems and is widely used in industrial and civilian cable ring networks and power supply terminals. Specially suitable for the protection and control of electrical equipment in urban residential areas, small secondary substations, switch stations, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, small and medium-sized power plants, hospitals, sports stadiums, railways, tunnels, and other places.
Technical Parameter：
| project | с module | F module | V module | CB module | ||
| load switch | combined electrical apparatus | vacuum switch | Isolation/grounding switch | vacuum circuit breaker | Isolation/grounding switch | |
| rated voltage kV | 12 | 12 | 12 | 12 | 12 | 12 |
| rated frequency Hz | 50 | 50 | 50 | 50 | 50 | 50 |
| power frequency withstand voltage (phase/break) kV | 42/48 | 42/48 | 42/48 | 42/48 | 42/48 | 42/48 |
| power frequency withstand voltage (phase/break) kV | 75/85 | 75/85 | 75/85 | 75/85 | 75/85 | 75/85 |
| rated current A | 630 | (注1) | 1250/630 | 1250/630 | ||
| segmental ability | ||||||
| rated closed-loop breaking current A | 630 | |||||
| rated cable charging breaking current A | 10 | |||||
| rated short-circuit closing current (peak) A | 50 | 80 | ||||
| rated peak withstand current kA | 50 | |||||
| rated short-time withstand current kA/3S | 20 | |||||
| rated short-circuit breaking current kA | 31.5 | 20 | 25 | |||
| rated transfer current A | 1700 | |||||
| equipped with fuse, maximum current A | 125 | |||||
| circuit resistance | ≤300 | ≤600 | ||||
| mechanical lifespan μQ | 5000 | 3000 | 5000 | 2000 | 5000 | 5000 |
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