FZW28-12 Outdoor Vacuum Load Break Switch
- Description
- Specification
- Features
- Size
- Catalogue
FZW28(A)-12FOutdoor Vacuum Load Break Switch can be applied in outdoor three-phase AC power distribution system with rated voltage of 12kV and rated frequency of 50Hz, opening and closing load current and short-circuit making current.
It is widely used in substation, industrial and mining establishment and urban and rural grid as protection, and in urban and rural automatic distribution grid and other sites where operation is frequent.
The product is pole mounted and operated manually or electrically, free of maintenance. It uses the technology of vacuum interrupter and SF6 gas as the insulating medium of phase to phase or earth, safe and reliable.
It meets the standards of GB3804 and GB11022.
|
No. |
Description |
Unit |
Parameter |
|||
|
1 |
Rated voltage |
kV |
12 |
|||
|
2 |
Rated current |
A |
630 |
|||
|
3 |
Rated frequency |
Hz |
50 |
|||
|
4 |
Rated short-time withstand current 4s |
kA |
12.5 |
16 |
20 |
|
|
5 |
Rated peak making current |
kA |
31.5 |
40 |
50 |
|
|
6 |
Rated insulation level |
Power frequency withstand voltage(1 min) general/ open contacts |
kV |
42/48 |
||
|
Impulse withstand voltage(peak) general/ open contacts |
kV |
75/85 |
||||
|
7 |
Rated SF6 gas pressure |
|
0 pressure, concentration≥93% |
|||
|
8 |
Main circuit resistance |
μΩ |
≤500 |
|||
1. It uses the technology of vacuum interrupter and SF6 gas as the insulating medium of phase to phase or earth, thus it is of high quality, with excellent breaking capacity, safe and reliable.
2. Isolating distance inside the switch is connected to vacuum interrupter, enhancing the safety.
3. With integrated design of manual and electric operation, it can be used alone or achieve automation by controller.
4. It can be used together with a controller, having the function of fault detection, protection, control and communication. When installed in 10kV overhead line, it can automatically cut off single phase earth fault and isolate phase-phase short-circuit fault.
