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Help Center12kv / 24kv, 50 / 60Hz Outdoor Residual Current Circuit Breaker Apply in Mining
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Certification:GB1984, IEC
12kv / 24kv, 50 / 60Hz outdoor Residual Current Circuit Breaker apply in mining
Residual Current Circuit Breaker Technical parameter
|
Table 1 Circuit Breaker\'s Main Technical Data |
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|
Data |
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|
NO |
Item |
Unit |
12kv |
24kv |
|
|
1 |
Rated voltage |
kV |
12 |
24 |
|
|
2 |
Rated frequency |
Hz |
50 |
50 |
|
|
3 |
Rated current |
A |
630/1250 |
630/1250 |
|
|
4 |
Rated short circuit breaking current |
kA |
20/25 |
20/25 |
|
|
5 |
Rated peak withstand current |
kA |
50/63 |
50/63 |
|
|
6 |
Rated short time withstand current/ lasting time |
kA/s |
20/4 , 25/4 |
20/4 , 25/4 |
|
|
7 |
Rated short circuit closing current(peak) |
kA |
50/63 |
50/63 |
|
|
8 |
Rated operating sequence |
O-0.3s-CO-180s-CO |
|||
|
9 |
Mechanical life |
10000 |
10000 |
||
|
10 |
Rated short circuit breaking current breaking times |
50 |
20 |
||
|
11 |
1min power frequency withstand current |
(wet) |
kV |
34/36 |
50/64 |
|
(dry) |
kV |
42/49 |
65/79 |
||
|
12 |
Lightning impulse withstand voltage(peak) |
kV |
75/85 |
125/145 |
|
|
13 |
Secondary circuit power frequency withstand voltage (1min) |
V |
2000 |
2000 |
|
|
Table2 Circuit Breaker\'s Main Mechanical Data |
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|
NO |
Item |
Unit |
Data |
||
|
12kv |
24kv |
||||
|
1 |
Clearance between contacts |
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