SF6 Gas Insulated Sectionalizer
The SF6 gas insulated sectionalizer is designed for a self-contained, circuit-opening device used in conjunction with source-side protective devices, such as reclosers or cicuit breakers, to automatically isolate faulted sections of electrical distribution systems.
FEATURE
- Maintenance free
- Light weight and easy installation
- Inrush current restraint
- Safety devices(low pressure interlocking, pressure relief, locking)
ADVANTAGES
- It can be applied between two protective devices having operating curves, which are close together. This is a vital feature in a location where an additional step in coordination is not practical or possible.
- It can be used on close-in taps where high available fault current prevents coordination with fuses.
- It has fault close and latch capability for any fault-closing operations.
SPECIFICATIONS
| Rated voltage(kV) | 12(15) | 24(25.8) | 36(38) | |
|---|---|---|---|---|
| Rated current(A) | 200 / 400 / 630 | 200 / 400 / 630 | 200 / 400 / 630 | |
| Rated power frequency withstand voltage(kV) | 50 | 60 | 70 | |
| Rated lightning impulse withstand voltage(kV) | 110 | 150 | 170 | |
| Rated short circuit making current(kA, peak) | 25 / 32.5 | 25 / 32.5 | 25 / 32.5 | |
| Rated short-time current(kA, RMS) | 1s | 10 / 12.5 | 10 / 12.5 | 10 / 12.5 |
| 10s | 3.5 | 3.5 | 3.5 | |
| Minimum actuating current(A) | Phase | 10 ~ 900 | ||
| Ground | 2 ~ 900 | |||
| Inrush restraint multiplier | 1.0 ~ 10.0 | |||
| Mechanical endurance(times) | 5,000 | 5,000 | 5,000 | |