Active Member
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[China]
Address: No.6, Futian Road, Xiangzhou,Zhuhai,China 519000
Contact name:Summer
Zhuhai Comking Electric Co.,Ltd. |
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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
