1.FN7-12KV 11KV 10KV Vacuum Load Break Switch With Fuse
FN7-12 series indoor AC HV load switch is a gas-production HV load switch and fuse combination unit with arc quenching principle.It is applied in three-phase AC 50Hz power system with rated voltage 12kV for breaking the load current and making the short-circuit current.The fuse combination unit can break the short-circuit current and has the function of single-phase fuse three-phase tripping and breaking.It is the ideal selection for protecting the line, equipment and transformer. Its performance meets the requirements of national standards GB 3804-2004 High-voltage alternating-current switches for rated voltage above 3.6kV and less than 40.5kV and GB 16926-2009
2.Product parameter
| Serial No. | Item | Unit | YFN7-12 HV Load Switch |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated frequency | HZ | 50 |
| 3 | Rated current | A | 630 |
| 4 | Rated short-circuit breaking current of fuse | kA | --- |
| 5 | Rated breaking transfer current | A | --- |
| 6 | Main loop resistance | μΩ | ≤80 |
| 7 | Rated active load breaking current | A | 630 |
| 8 | Rated short-time withstand current(thermal stability current)/duration | kA/s | 20/4 |
| 9 | Rated short-time withstand current(thermal stability current)/duration of earthing switch | kA/s | 16/2 |
| 10 | Rated peak withstand current(dynamic current) | kA | 50 |
| 11 | 1 min power-frequency withstand voltage(effective value)to earth,phase-to-phase/isolating fracture | kV/kV | 42/48 |
| 12 | Full-wave lightning impluse withstand voltage(peak) to earth,phase-to-phase/isolating fracture | kV/kV | 75/85 |
| 13 | Mechanical life | Time | 2000 |
| 14 | Rated opening operation voltage | V | --- |
| 15 | Time of switch opening triggered by breaking of fuse | ms | --- |
3.Product Characteristics
small size
light weight
simple & reasonable structure
small operating force
reliable performance & convenient maintenance
4.Service Conditions
(1).Altitude≤1000m;
(2).Ambient temperature-25ºC-+ 40ºC;
(3).The daily average of relative humidity shall not be larger than 95% and the monthly average shall not be larger than 90%:
(4).The ambient air shall not be subject to the obvious pollution such as corrosive or combustible gas and steam;
(5).The site without fire hazards and explosion hazards;
(6).The site that the seismic intensity does not exceed degree 8; the gradient shall not exceed 5°
5.Technical detail
6.Shippment service
7. FAQ
(1). How to order the products?
Send your product name, model and drawing and let us confirm the right one, and recommend and make a good offer.
(2). About lead time and shipping time?
Usually it is 3-10 days, if quantity is big, lead time will be extended.
(3)．Life span of our XG brand?
Generally we promise two years quality guarantee, some products will be extended longer time for life span.
8.Contact us
Emma
Phone/wechat/whatsapp: 0086 13319220197
Wechat ID: Sales_E
Email: emma@zgxgdn.com; 40516034@qq.com;
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FN7 12KV 11KV 10KV Vacuum Load Break Switch With Fuse Images
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