Original
By certification 
plateau type indoor vacuum circuit breaker
VS1-24indoor high-voltage vacuum circuit breaker is an AC three-phase 50HZ indoor high-voltage switching equipment with rated voltage of 24KV,mainly applied for protection and control in power distribution system of power plant, electric substation and industrial and mining enterprise, It is especially applied for breaking of important load and place requiring frequent operation.
1.Altitude:≤2000m,It should be custom-made for>2000m.
2.Ambient temperature:Max.+40 °C,Min.-25°C
3.Relative Humidity: Daily average value should be less than 95%,monthly average value should be less than 90%
4.The earthquake intensity: less than 8 degree.
5.The place where it is used is free from fire, explosion, chemical corrosion and intense vibration.
NO |
Item |
Units |
parameters |
1 |
Rated voltage |
KV |
12 |
2 |
Rated Frequency |
HZ |
50 |
3 |
Rated Current |
A |
630.1250.1600.2000.3150 |
4 |
Rated short-circuit breaking current |
KA |
20 25 31.5 |
5 |
Rated short-circuit closing current (peak) |
KA |
50 63 80 |
6 |
Rated short-circuit duration |
S |
4 |
7 |
Rated short-circuit breaking current breaking number |
nos |
50s |
8 |
Rated operating sequence |
0-0.3s-CO-180s-CO |
|
9 |
Rated lightning impulse withstand voltage |
kv |
125 |
10 |
1min power frequency withstand voltage |
KV |
65 |
11 |
Closing time |
ms |
≤ 70 |
12 |
opening time |
ms |
≤ 50 |
13 |
Mechanical life |
Times |
20000 |
14 |
Rated Storage and operation voltage |
V |
AC DC 220/110 |
15 |
Breaking life |
ms |
≤ 80 |
16 |
Storage life |
s |
≤ 10 |
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