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
Contact: Summer Yang (+86 15916286020)
Email: international-sales01@zhcomking.com;comkingswitchgear@gmail.com
http://www.comkingswitchgear.com
www.zhcomking.com
Product Tags:
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CKWZ Outdoor Vacuum Breaker Images
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