The high voltage vacuum contactor is designed to operate without protection, similar to the switch on a household light, it cannot disconnect the short circuit current, so it is often used in conjunction with a high voltage vacuum circuit breaker to provide more comprehensive circuit protection. Because of its small size, light weight, frequent operation and other characteristics, this equipment is widely used in a variety of frequent operation fields, including power system, metallurgy, mining, rolling stock, rail transit and other industries of high voltage equipment, to ensure the safety of equipment and personnel.
Technical parameters:
|
NO. |
Parameters |
Unit |
Value |
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|
BKZC(R)-12-630/400/250 |
BKZC(R)-12-630/400/250 |
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|
1 |
Rated Voltage |
kV |
7.2 |
12 |
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|
2 |
Rated Current |
A |
630 |
400 |
250 |
630 |
400 |
250 |
|
|
3 |
Rated closing current (rms) |
A |
6300 |
4000 |
2500 |
6300 |
4000 |
2500 |
|
|
4 |
rated breaking current |
5040 |
3200 |
2500 |
5040 |
3200 |
2500 |
||
|
5 |
4S thermal current |
6300 |
4000 |
2500 |
6300 |
4000 |
2500 |
||
|
6 |
Limit breaking current |
6300 |
4000 |
2500 |
6300 |
4000 |
2500 |
||
|
7 |
Power frequency withstand voltage |
kV |
32 |
42 |
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|
8 |
operating frequency |
Times/h |
300 |
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|
9 |
Electric life time |
AC-3 |
×104 Times |
25 |
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|
AC-4 |
10 |
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|
10 |
Mechanical life |
30 |
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|
11 |
Rated operating voltage |
V |
AC110/220 |
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|
12 |
Closing coil pull current |
A |
≤ DC6/3 |
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|
13 |
Holding coil holding current |
D:DC0.32/0.16 |
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|
14 |
Shunt trip coil current |
J:DC2.5/1.3 |
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