11KV GIS Distribution Switchgear Company
11KV gas insulated distribution switchgear(GIS) is one of the types of SF6 high-voltage isolation loop network gas insulated switchgear which is applied to medium voltage electrical distribution networks such as underground metro, airport and mall building etc.
11KV gas insulated distribution switchgear(GIS) is a high-voltage SF6 insulated ring network switchgear used in the medium voltage distribution network.
Ring6 11KV gis switchgear is a medium voltage switchgear which adopts a fully-sealed structure, and all primary charged components are sealed in the same insulated gas chamber made of stainless steel and protected to IP67.
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Both of 11KV and 33KV gas insulated switchgear belong to medium voltage switchgear, but there is a bit different between them: 11KV line is normally designed for residential zone through the distribution transformer(11kv/0.145KV), it has higher current and shorter distance than 33KV line, 33KV line normally transfer the power from one city to another which is far from residential zone, then the power is divided into 11KV segments to consumer zone.
Ring6 has been designed in multiple modules, which can be combined in different ways according to the requirements of users, and provide a variety of combinations to meet the needs of the vast majority of applications requiring ring network units.
Up to 6 modules can be configured in the same SF6 chamber. When more than 6 modules are used, the expansion busbars can be used to connect the switchgear.
SF6 gas insulated switchgear is widely used in the power system of small secondary substations, power substations, residential quarters, mining enterprises, large shopping malls, airports, and railways.
SF6 gas insulated switchgear has many advantages and the greatest advantage is that they are not affected by the external environment, such as condensation, contamination, small animals and chemical substances. Another advantage is that the use of SF6 compressed gas insulation is conducive to the development of miniaturization.
| Ring6 11KV | 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 | 12/17, 5/24 | 12/17,5/24 | 12/17,5/24 | 12/17,5/24 | 12/17,5/24 | 12/17,5/24 |
| Rated frequency 5) | Hz | 50/50/50 | 50/50/50 | 50/50/50 | 50/5 0/50 | 50/50/50 | 50/50/50 |
| Power frequency withstand voltage | kV | 284)/38/50 | 284)/38 /50 | 284,/38 /50 | 284,/38 /50 | 284)/38/50 | 284)/38/50 |
| Lightning impulse withstand voitage | kV | 95/95/125 | 95/95/125 | 95/95/125 | 95/95/125 | 95/95/125 | 95/95/125 |
| Rated normai current | A | 6 30/630/630 | 2001) | 200/200/200 | |||
| Breaking capacities: | |||||||
| -active load | A | 630/630/630 | |||||
| -closed loop | A | 650/650/650 | |||||
| -offload cable charging | A | 140/140/140 | |||||
| -offload transformer | A | 20/20/20 | |||||
| -earth-fault | A | 205/160/160 | |||||
| -earth-fault cable charging | A | 117/91/91 | |||||
| -short-circuit breaking current | kA | see2) | 16/16/16 | ||||
| Marking capacity | kA | 52,5/40/40 | 52,5/40/40 | see2) 5 | 12,5/12,5/12, | 40/40/40 | 40/40/40 |
| Short tirne current 3 sec,3) | kA | 21/16/16 | 21/16/16 | 16/16/16 | 16/16/16 | ||
1) Depending on the current rating of the fuse-link
2) Limited by high voltage fuse-links
3) Maximum rating for bushings Interface C (400 series bolted)
4) GOST version is available with 42kV power frequency to withstand voltage
5) For rated frequency 60Hz de-rating for current parameter needs to be applied
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