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permanent magnetic intelligent outdoor vacuum circuit breaker
ZWM8-12 permanent magnetic intelligent outdoor high-voltage vacuum circuit breaker(hereinafter called intelligent breaker) is applied for breaking, on or off of load current in AC three-phase power system of rated 10-12KV with 50/60Hz, it owns functions of overload and short protection, fast breaking protection, time lapse delay and auto matic reclosing, it can also be equipped with arrestor or disconnecting ( circuit breaker and disconnecting switch combination, hereinafter called combination intelligent circuit breakers) according to customers requirement. This intelligent breaker owns power supply itself, available for remote control, interfacs of CT,PT are for remote control, can meet the requirements of remote control.
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Item |
Units |
Parameters |
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Rated voltage |
KV |
12 |
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Rated insulation level |
1 min PF withstand voltage |
Dry |
42 |
|
|
Wet |
34 |
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Lightening impulse withstand voltage(peak) |
75 |
|||
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Rated current |
A |
400.630 |
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Rated short circuit making current |
KA |
20.16.12.5 |
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Rated operating sequence |
|
0-0.3s-co-180s-CO |
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Breaking t short circuit breaking times |
times |
30 |
||
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Rated short circuit closing current(peak) |
|
50 |
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Rated peak withstand current |
KA |
50 |
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Rated short time withstand current |
20.16.12.5 |
|||
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Duration of rated short circuit breaking |
s |
4 |
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Opening time (shunt trip) |
Max. operating voltage |
ms |
15~50 |
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|
Rated operating voltage |
15~50 |
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Min. operating voltage |
30~60 |
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Closing time |
25~50 |
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Total breaking time |
≤100 |
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Arc time |
≤20 |
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Mechanical life |
Times |
10000 |
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Closing frequency |
J |
70 |
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Energy storage motor rated input power |
W |
≤220 |
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Rated operating voltage and subsidiary loop rated voltage |
V |
AC/DC220 110,24 |
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|
AC/DC220 110,24 |
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Energy storage time under rated voltage |
S |
<8 |
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Over current release |
Rated current |
A |
5 |
|
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Accuracy of release current |
% |
±10 |
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Over current adjust |
A |
1~9 |
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Quick break adjust |
ms |
6~20 |
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|
80~500 |
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Remote control distance |
m |
30 |
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The number of overlapping |
Times |
1~3 |
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