Ring Main Unit in Power Distribution Equipment made of Cold-rolled Steel
Ring Main Unit in Power Distribution Equipment made of Cold-rolled Steel
The XGN15-12 series AC metal ring network switchgear is a sulphur hexafluoride switch as the main switch, while the whole cabinet is air-insulated for distribution automation, and it is a compact and expandable metal-enclosed switchgear. With simple structure, flexible operation, reliable chain, easy installation, etc., it can provide satisfactory technical solutions, sensing technology and the latest protection relays for various user requirements, plus advanced technical performance and light weight. Flexible assembly solutions can fully meet the constant changes in the market.
The main switches of XGN15-12 series AC metal ring network switchgear are respectively made by our company to produce FLN36-12D and FLN48-12D type or ABB SFG type SF6 load switch and Schneider SC6 load switch; also can be equipped according to user needs with today's international highest technical level of the Ukrainian BP series permanent magnet mechanism vacuum circuit breaker or ABB production vd4 type circuit breaker. The main switch in the ring network cabinet operates in manual or electric mode, which matches with FTU RTU to meet the requirement for "four shakes"
Technical parameters
| No | Item name | Unit | Parameter | |
1 | Rated voltage | kV | 12 | |
| 2 | Rated lightning impact withstand voltage | Inter-phase and relative | kV | 75 |
| Between break opening | kV | 85 | ||
| 3 | One minute power frequency withstand voltage | Inter-phase and relative | kV | 42 |
| Fracture room | kV | 48 | ||
| 4 | Rated frequency | Hz | 50/60 | |
| 5
| Rated current | Main bus | A | 630 1250 |
| Branch bus | A | 630 | ||
6 | Rated short-time withstand current | Main circuit | kA | 20/4S (25/2S) |
| Ground circuit | kA | 20/4S | ||
| 7 | Rated peak withstand current | kA | 50 63 | |
| 8 | Transfer current | A | 1500 | |
| 9 | Protection level | IP3X | ||
| 10 | Load switch mechanical life | Times | 5000 | |
| 11 | Grounding switch mechanical life | Times | 2000 | |
| 12 | Load switch cabinet | Cabinet width | mm | 375,500,650,750 |
| Cabinet depth | mm | 916,940 | ||
| Cabinet height | mm | 1635,1885 | ||
| 13 | Circuit breaker cabinet | Cabinet width | mm | 650,750 |
| Cabinet depth | mm | 916,940 | ||
| Cabinet height | mm | 1635,1885,2000 | ||
Purpose
XGN15-12 series AC metal ring network switchgear is suitable for AC 50Hz, 12kV power system, widely used in industrial and civil cable ring network and power supply end.
Especially suitable for the following places: urban residential area distribution, small secondary substation, opening and closing, box-type substation, industrial and mining enterprises, shopping malls, airports, subways, wind power, hospitals, stadiums, railways, tunnels, etc.
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