Zhuhai Comking Electric Co.,Ltd.
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1.Description
CKWZ is a three-phase AC outdoor vacuum circuit breaker maximum up to 24kV rated voltage and 50Hz rated frequency.
2. Working Condition
2.1 Ambient air temperature: -45℃～+40℃,daily range of temperature: diurnal variation 25℃
2.2 Relative humidity: daily average data ≤95%, monthly average data ≤90%
2.3 Seismic capacity: ≤magnitude 8, horizontal acceleration ≤ 0.4g, vertical acceleration ≤ 0.2g
2.4 Altitude: ≤1000m
2.5 Pollution classification: IV.
2.6 Wind speed: ≤35m/s
2.7 Applicable in the places without fire, without explosion risk, and without violent vibration
(Exceeding above working condition is available as customized product)
3.Technical Data
|
Description |
Unit |
Parameter |
|
|
Rated voltage |
kV |
12 |
24 |
|
Rated frequency |
Hz |
50 |
50 |
|
Rated current |
A |
630 |
630 |
|
Rated short-time withstand current(4s) |
kA |
20 |
20 |
|
Rated peak withstand current |
kA |
50 |
50 |
|
Rated short-circuit making current(peak) |
kA |
50 |
50 |
|
Rated short-circuit breaking current |
kA |
20 |
20 |
|
Breaking times for rated short-circuit breaking current |
times |
30 |
30 |
|
Mechanical life |
times |
10000 |
10000 |
|
Power frequency withstand voltage(1min) |
kV |
42/48 |
50/60 |
|
Lighting impulse withstand voltage |
kV |
75/85 |
125/145 |
|
Clearance between open contacts |
mm |
9±1 |
12±1 |
|
Withstand voltage for secondary circuit (1 min) |
V |
2000 |
2000 |
|
Opening speed |
m/s |
1.2±0.2 |
1.4±0.25 |
|
Closing speed |
m/s |
0.8±0.2 |
0.8±0.2 |
|
Bounce time for contact’s closing |
ms |
≤2 |
≤2 |
|
Opening simultaneity for three-phase |
ms |
≤2 |
≤2 |
|
Loop resistance (without disconnector) |
μΩ |
<80 |
<80 |
4. Standard
----GB1984-2003
----GB/T11022-2011
----GB/T11023-1989
----GB311.1-1997
----DL/T593-1996
----DL/T402-1999
----GB/T3309-1989
----DL403-1999
----IEC62271-100