Environmental conditions:
- Altitude: the altitude does not exceed 1000m;
- Ambient temperature: no higher than +40℃, not lower than -25℃;
- Relative humidity: the daily average does not exceed 95%, and the monthly average does not exceed 90%;
- Earthquake intensity: no more than 8 degrees;
- Locations without fire, explosion hazard, serious contamination, chemical corrosion and severe vibration
The main technical parameters:
|
NO |
Item |
Units |
Technical parameters |
|||||
|
1 |
Rated voltage |
kV |
12 |
|||||
|
2 |
Maximum working voltage |
kV |
12 |
|||||
|
3 |
Rated current |
A |
630/1250 |
630/1250 |
630/1250 |
|||
|
4 |
Rated short-circuit breaking current |
kA |
20 |
25 |
31.5 |
|||
|
5 |
Rated short circuit closing current |
kA |
50 |
63 |
80 |
|||
|
6 |
Rated peak withstand current |
kA |
50 |
63 |
80 |
|||
|
7 |
4S rated short circuit withstand current |
kA |
20 |
25 |
31.5 |
|||
|
8
|
Rated insulation level |
Power frequency withstand voltage (before and after rated breaking) |
kV |
42(Fracture:48) |
||||
|
|
|
Impact withstand voltage (before and after rated breaking) |
|
75(Fracture:84) |
||||
|
9 |
Rated operation sequence |
|
0-0.3s-Co-180s-Co |
|||||
|
10 |
Mechanical life |
times |
10000 |
|||||
|
11 |
Rated short circuit current breaking times |
times |
50 |
|||||
|
12 |
Operating mechanism rated closing voltage (DC) |
V |
110,220 |
|||||
|
13 |
Operating mechanism rated trip current (DC) |
V |
110,200 |
|||||
|
14 |
Contact stroke |
mm |
11±1 |
|||||
|
15 |
Overtravel (contact spring compression length) |
mm |
3.5±0.5 |
|||||
|
16 |
Three-phase split and close bounce time |
ms |
≤2 |
|||||
|
17 |
Contact closing bounce time |
ms |
≤2 |
|||||
|
18 |
Average opening speed |
m/s |
1.2±0.2 |
|||||
|
19 |
Average closing speed |
m/s |
0.6±0.2 |
|||||
|
20 |
Opening time |
At the highest operating voltage |
s |
≤0.05 |
||||
|
|
|
At the lowest operating voltage |
|
≤0.08 |
||||
|
21 |
Closing time |
S |
0.1 |
|||||
|
22 |
Main loop resistance of each phase |
μΩ |
60 |
50 |
||||
|
23 |
Dynamic and static contacts allow wear cumulative thickness |
mm |
3 |
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