Ring6 Series SF6 gas insulated mv switchgear (GIS) is suitable for three-phase AC 50Hz, rated voltage 33kV distribution system for split load current, overload current,it acts as a distribution, control, and protection of electrical energy in the power system.
Ring6 33KV sf6 gis switchgear adopts a fully-sealed structure, and all the live parts components are sealed in a stainless steel tank, with a degree of protection of IP67.
Ring6 Series SF6 gas insulated mv switchgear (GIS) is suitable for three-phase AC 50Hz, rated voltage 33kV distribution system for split load current, overload current,it acts as a distribution, control, and protection of electrical energy in the power system.
Ring6 33KV sf6 gis switchgear adopts a fully-sealed structure, and all the live parts components are sealed in a stainless steel tank, with a degree of protection of IP67.
Ring6 sf6 gas insulated switchgear can bear humid and salty fog, such as flood, heavy pollution, and other harsh environmental conditions. The GIS is Widely used in industrial parks, streets, airports, residential areas, bustling commercial centers, etc., is the ideal equipment for distribution automation.
Ring6 sf6 gis switchgear has multiple modules, which can be combined in different ways according to user requirements. It can provide multiple combinations to meet the needs of the vast majority of applications requiring ring network units.
Up to 3 modules can be configured in the same SF6 tank. When more than 3 modules are used, the expansion busbars can be used to connect the switchgear.
Ring6 can be supplied with an integrated remote control and monitoring unit.
Ring6 is an SF6 insulated, extendable compact switchgear system for secondary distribution. The switchgear has a unique flexibility due to its extendability and the possible combination of fully modular semi-modular configurations.
33kV GIS gas insulated switchgear will be in trial operation before delivery, it must to perform a voltage withstand test according to the standard IEC62271. We have developed a testing system to ensure the isolation matches the rated voltage.
33kv sf6 gis gas insulated switchgear Advantages:
Firstly, 33kv sf6 gis gas insulated switchgear is compact, achieved by replacing air insulation in metal-enclosed switchgear with SF6 and N2 gases, with each unit located within the cabinet and filled with low-pressure (0.03~0.16MPa) SF6 and other gases.
Secondly, 33kv sf6 gis gas insulated switchgear enhances reliability and safety. The main conductive parts of the circuit are sealed within SF6 and similar gases, along with the closure of high-voltage live conductors. This setup remains unaffected by external environmental changes, making it suitable for harsh conditions. This design allows for long-term safe operation, high reliability, and eliminates the risk of electric shock and fire hazards. Due to the low gas pressure, there are no significant sealing issues, and the gas-tightness can last for up to 30 years without refilling.
Thirdly, maintenance is simplified. High-voltage components are sealed using gas or metal, which prevents rust or corrosion, resulting in minimal maintenance requirements. The use of long-lasting, stable-performing vacuum circuit breakers enables maintenance-free or low-maintenance operation.
Fourthly, 33kv sf6 gis gas insulated switchgear offers convenient application and arrangement. Gas-insulated switchgear organizes high-voltage components into standard modules that can be combined to meet various primary wiring requirements, catering to different usage scenarios.
In summary, 33kv sf6 gis gas insulated switchgear simplifies the manufacturing process, assembly, and testing at the factory. It is transported as a complete set and can be easily installed on-site without the need to handle SF6 or similar gases. The system can be expanded by conveniently adding cable sockets as needed. The three-phase high-voltage components are enclosed within the gas-insulated switchgear’s inflatable casing, making it easy to introduce and extract power via cables. The connection to the main transformer and the layout are also simplified. The use of gas-insulated switchgear significantly reduces the overall dimensions, making it easier to arrange and reducing the required footprint.
Ring6 33KV | C-module | F-module | v-module | ||||
Switch disconnector | Earthing switch | Switch-fuse disconnector | Downstream earthing switch | Vacuum circuit-breaker | Earthing switch/ disconnector | ||
Rated voltage | kV | 36/ 40,5 | 36/40,5 | 36/40,5 | 36/ 40,5 | 36/ 40,5 | 36/ 40,5 |
Power frequency-withstand voltage | kV | 70/95 | 70/95 | 70/95 | 70/95 | 70/95 | 7D / 95 |
-across disconnector | kV | 80/ 110 | 80/110 | 80/110 | |||
Lightning inpulse withstand voltage | kV | 170/185 | 170/185 | 170/185 | 170 /185 | 170/185 | 170/185 |
-across disconnector | kV | 195/215 | 195/215 | 195/215 | |||
Rated normal current | A | 630/ 6301) | 200/ 2002) | 630/ 6301) | |||
Breaking capacities | |||||||
-active load | A | 630/ 630 | 200/ 200 | ||||
-closed loop | A | 630/ 630 | 200/ 200 | ||||
-off load cable charging | A | 20/ 21 | 20/21 | 50(Class Cl) | |||
-earth fault | A | 60/63 | 60/63 | ||||
-earth fault cable charging | A | 35/36 | 35/36 | ||||
-transfer current | A | 840/750 | |||||
-shart-circuit breaking current | kA | see3) | 20/20 | ||||
Making capacity | kA | 50/50 | 50/50 | see3) | 2,5/ 2,5 | 50/50 | 50/50 |
Class (Electrical endurance) | E3/ E2 | E2/E2 | -/- | E2/E2 | E1/ E1 | E2/E2 | |
Short time current 1 sec.4) | kA | 16/16 | 16/16 | 1/1 | 16/16 | 16/16 | |
Short time current 1 sec.5) | kA | 25/25 | 25/25 | 25/25 | 25/ 25 | ||
Short time current 3 sec.5) | kA | 20/20 | 20/20 | 20/20 | 20/20 | ||
Internal arc classitication IACAFL,1s | kA | 20/20 | 20/20 | 20/20 |