1.Description
CKVB-12/G is a solid insulated vacuum circuit breaker with epoxy resin pole and working in a voltage range maximum up to 12kV. The CKVB-12/G family includes CKVB-12/GA, CKVB-12/GB, CKVB-12/GC, and CKVB-12/GD.
2. Working Condition
2.1Ambient air temperature: -25℃～+40℃
2.2Ambient humidity:
----relative average daily humidity: ≤95%
----relative average daily water vapor pressure: ≤2.2kPa
----relative average monthly humidity: ≤90%
----relative average monthly water vapor pressure: ≤1.8kPa
2.3Altitude: ≤1000m
2.4 Earthquake intensity: ≤magnitude 8
2.5 Ambient air doesn’t obviously pollute by dust, smoke, corrosive or combustible gas, vapors or salt spray.
(Exceeding above working condition is available as customized product)
3.Technical Data
|
Description
|
Unit
|
Parameter
|
|
Rated voltage
|
kV
|
12
|
|
Short-time withstand voltage
|
kV
|
42
|
|
Lighting impulse withstand voltage
|
kV
|
75
|
|
Rated frequency
|
Hz
|
50
|
|
Rated current
|
A
|
630
|
1250
|
1600
|
2000,2500
|
3150,4000
|
|
Pole centre distance
|
mm
|
150
|
210
|
150
|
210
|
275
|
210
|
275
|
275
|
275
|
|
Rated short-circuit breaking current
|
kA
|
25
|
31.5
|
25
|
31.5
|
25
|
31.5
|
25
|
31.5
|
40
|
40
|
31.5
|
40
|
31.5
|
40
|
31.5
|
40
|
40
|
|
Rated short-circuit making current
|
kA
|
63
|
80
|
63
|
80
|
63
|
80
|
63
|
80
|
100
|
100
|
80
|
100
|
80
|
100
|
80
|
100
|
100
|
|
Short-time withstand current(4s)
|
kA
|
25
|
31.5
|
25
|
31.5
|
25
|
31.5
|
25
|
31.5
|
40
|
40
|
31.5
|
40
|
31.5
|
40
|
31.5
|
40
|
40
|
|
Rated peak withstand current
|
kA
|
63
|
80
|
63
|
80
|
63
|
80
|
63
|
80
|
100
|
100
|
80
|
100
|
80
|
100
|
80
|
100
|
100
|
|
Operating sequence
|
|
Opening-0.3s –closing opening-180s –closing opening
|
|
Opening time
|
ms
|
20～50
|
|
Arc time
|
ms
|
≤15
|
|
Closing time
|
ms
|
30～70
|
|
Average closing speed
|
m/s
|
0.5～0.8
|
|
Average opening speed
|
m/s
|
0.9～1.2
|
|
Bounce time for contact’s closing
|
ms
|
≤2
|
|
Asynchronous time for contact’s closing / opening
|
ms
|
≤2
|
|
Allowable accumulated wearing thickness of moving/fixing contact
|
mm
|
3
|
4.Standard
----GB1984-2003
----IEC60056-2001
----GB/T16927-1997
----GB/T 4473-2008
----DL/T403-2000
----JB/T3855-2008
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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Vacuum Circuit Breaker CKVB-12/G Images
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