Description:
The FZW32 series outdoor high-voltage isolation vacuum load switch (hereinafter referred to as load switch) is the first generation of high-voltage distribution equipment developed and produced by our company. After strict type testing and long-term operation assessment, all technical performance indexes have reached relevant national standards. The rated voltage of this series of load switches is 12 ~ 72.5kV. It is widely used in substations, industrial and mining enterprises, urban and rural automatic distribution networks and places with frequent operation.
Description of product model
TECHNICAL PARAMETER
| No. | Item | Unit | Value |
| 1 | Rated voltage | kV | 24 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630 |
| 4 | 1min power frequency withstand voltage (dry) vacuum fracture, interphase, ground / isolation fracture | kV | 65/79 |
| 5 | Lightning impulse withstand voltage (peak value) interphase, ground / isolation fracture | kV | 125/145 |
| 6 | Rated short-time withstand current | kV/4s | 20 |
| 7 | Rated peak withstand current | kA | 50 |
| 8 | Rated Active load breaking current | A | 630 |
| 9 | Rated cable charging breaking current | A | 10 |
| 10 | Rated closed-loop breaking current | A | 630 |
| 11 | Main circuit resistance | μΩ | ≤150 |
| 12 | Auxiliary circuit resistance | μΩ | 400≤R≤1500 |
| 13 | Small fracture / large fracture | mm | ≥80/200 |
| 14 | Creepage distance of external insulation | mm | 744 |
| 15 | Mechanical life | Times | 10000 |
| 16 | Net weight | kg | 90 |
THE USE OF CONDITIONS
No. |
Item |
Unit |
Value |
||
| 1 | Ambient temperature | Max. Temp. | ºC | +40 | |
| Min. Temp. | -25 | ||||
| The Max. Daily Temp. difference | 25 | ||||
| 2 | Altitude | m | ≤1000 | ||
| 3 | Intensity of solar radiation (outdoor) |
W/cm 2 |
0.1 | ||
| 4 | Pollution class | V |
|||
| 5 | Radial thickness of ice | mm | 10 | ||
| 6 | Wind velocity/Wind pressure (outdoor) | m/s/Pa | 34/700 | ||
| 7 | Humidity | The average daily relative humidity |
% | ≤95 | |
| The average monthly relative humidity | ≤90 | ||||
| 8 | Seismic resistance | Horizontal acceleration | m/s 2 |
0.3g | |
| Vertical acceleration | 0.2g | ||||
