Indoor AC Medium Voltage Vacuum Load Break switch HV LBS- 36-40kV
Key attributes
| Brand | ROCKWILL |
| Model NO. | Indoor AC Medium Voltage Vacuum Load Break switch HV LBS- 36-40kV |
| Rated voltage | 40.5kV |
| Rated frequency | 50Hz |
| Series | FZN21 |
Product descriptions from the supplier
Description
Product Description
FZN21-40/T630-20 and FZN21-40(R)D/T125-31.5 type Indoor AC high voltage load switch- fuse combination units appliances for three-phase AC 40kV, 50Hz power system, or with the complete power distribution equipment and loop-network switch cabinet, combined substation and other ancillary uses, is widely used in urban network construction and transformation engineering, industrial and mining enterprises, high-rise buildings and public facilities, can be used as ring power supply unit or terminal equipment, play power distribution, control and protection.
Breaking with rated current, overload current (FZRN21-40D/T125-31.5 can short-circuit breaking current) and to prevent equipment missing running ability to switch a visible fracture of isolation, with combined installed capacity of the ground with the relevant switches and electrical spring agencies, to remote control.
The use of environmental conditions
- Air temperature: -25°C ~ +40°C;
- Altitude: ≤1000m;
- Relative humidity: daily average is not more than 95%,
- Installation places: No fire, explosion hazard, serious filthy places.
- Contamination level: II
Mainly technical parameters
| NO. | Items | Unit | Value |
| 1 | Rated voltage | kV | 40.5 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Maximum rated current of fuse | A | 63 |
| 4 | 1min power frequency withstand voltage | kV | 95/110 |
| 5 | Lightning impulse withstand voltage | kV | 185/215 |
| 6 | Rated peak withstand current | kA | 50 |
| 7 | 4S rated short time withstand current | kA | 20 |
| 8 | Rated active load breaking current | A | 1250 |
| 9 | Rated closed loop breaking current | A | 1250 |
| 10 | Rated cable charging breaking current | kA | 21 |
| 11 | Rated short circuit breaking current | kA | 31.5 |
| 12 | Rated short circuit making current | kA | 80(expected peak value) |
| 13 | Mechanical life | times | 10000 |
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