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-24/G is a solid insulated vacuum circuit breaker with epoxy resin pole and working in a voltage range maximum up to 24kV. The CKVB-24/G family includes CKVB-24/GB, CKVB-24/GE.
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 | kA | 24 | ||||
Rated short-time withstand voltage | phase-to-phase phase-to-earth | kA | 65 | |||
open contact | kA | 79 | ||||
Rated lighting impulse withstand voltage | phase-to-phase phase-to-earth | kA | 125 | |||
open contact | kA | 145 | ||||
Rated frequency | Hz | 50 | ||||
Pole centre distance | mm | 210, 230 | ||||
Rated current | A | 630 | 1250 | |||
Rated short-time withstand current(4s) | kA | 25 | 31.5 | 25 | 31.5 | |
Rated peak withstand current | kA | 63 | 80 | 63 | 80 | |
Rated short-circuit breaking current | kA | 25 | 31.5 | 25 | 31.5 | |
Rated short-circuit making current | kA | 63 | 80 | 63 | 80 | |
Rated breaking cable charging current | A | 25 | ||||
Rated capacitor bank inrush making current | kA | 12.5 | ||||
Rated single capacitor bank breaking current | A | 630 | ||||
Rated back to back capacitor bank breaking current | A | 400 | ||||
Operating sequence | / | Opening-0.3s-Closing/Opening-180s-Closing/Opening | ||||
Mechanism life | times | 20000 | ||||
Opening times for rated current | times | 20000 | ||||
Opening times for rated short-circuit current | times | 50 | ||||
Clearance between open contacts | mm | 13±1 | ||||
Overtravel | mm | 4±1 | ||||
Average closing speed | m/s | 0.8～1.2 | ||||
Average opening speed | m/s | 1.1～1.7 | ||||
Closing time | ms | 35～70 | ||||
Opening time | ms | 20～50 | ||||
Bounce time for contact’s closing | ms | ≤2 | ||||
Asynchronous time for three-phase contacts closing / opening | ms | ≤1 | ||||
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
