Load switch cabinet mechanism
- Product Description
-
First, the standard three-station design (optional two stations), in line with the requirements of "GB3804-2017 3 ~ 63kV AC high-voltage load switch"
Second, the mature arc-extinguishing grid design ensures that the closing and arc-extinguishing arc is stable and reliable.
Third, select the disc spring to ensure that the contact pressure is stable and reliable for a long time.
Fourth, the plastic arm is subjected to low temperature experiments to ensure that it does not rupture or crack under low temperature conditions.
5. Reserve the grounding circuit copper bus interface to strengthen the grounding circuit closing and current withstand capability as needed.
Sixth, the grounding switch form is optional
Details
|
序号 |
负荷开关电气参数 |
|
|
1. |
相间中心距 |
150mm±2 |
|
2. |
三相合闸不同期 |
≤2ms |
|
3. |
三相分闸不同期 |
≤2ms |
|
4. |
合闸弹跳 |
≤2ms |
|
5. |
分闸弹跳 |
≤2ms |
|
6. |
合闸速度 |
≥3m/s |
|
7. |
分闸速度 |
≥3m/s |
|
8. |
工频耐压 |
42/45kV |
|
9. |
雷电冲击电压 |
75/85kV |
|
10. |
机械寿命(负荷开关/接地开关) |
5000/3000次 |
|
11. |
电气寿命 |
E3级 |
|
12. |
主回路电阻 |
≤150μΩ |
|
13. |
动热稳定性及峰值耐受电流 |
20kA/4S，20KA |
|
14. |
温升 |
1.1x630A |