CKVB-24/GB Electrical Circuit Breaker , Medium Voltage Vacuum Circuit Breaker

Brand Name:Comking
Certification:Type Test Report
Model Number:CKVB-24/GB
Minimum Order Quantity:1set
Delivery Time:10-15 work days
Payment Terms:L/C, T/T, Western Union
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Location: Zhuhai Guangdong China
Address: No.6, Futian Road, Xiangzhou,Zhuhai,China 519000
Supplier`s last login times: within 43 hours
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Product Details

1. CKVB-24/GB is the withdrawable circuit breaker.


2. Technical Data

DescriptionUnitParameter
Rated voltagekA24
Rated short-time withstand voltagephase-to-phase phase-to-earthkA65
open contactkA79
Rated lighting impulse withstand voltagephase-to-phase phase-to-earthkA125
open contactkA145
Rated frequencyHz50
Pole centre distancemm210, 230
Rated currentA6301250
Rated short-time withstand current(4s)kA2531.52531.5
Rated peak withstand currentkA63806380
Rated short-circuit breaking currentkA2531.52531.5
Rated short-circuit making currentkA63806380
Rated breaking cable charging currentA25
Rated capacitor bank inrush making currentkA12.5
Rated single capacitor bank breaking currentA630
Rated back to back capacitor bank breaking currentA400
Operating sequence/Opening-0.3s-Closing/Opening-180s-Closing/Opening
Mechanism lifetimes20000
Opening times for rated currenttimes20000
Opening times for rated short-circuit currenttimes50
Clearance between open contactsmm13±1
Overtravelmm4±1
Average closing speedm/s0.8~1.2
Average opening speedm/s1.1~1.7
Closing timems35~70
Opening timems20~50
Bounce time for contact’s closingms≤2
Asynchronous time for three-phase contacts closing / openingms≤1
Allowable accumulated wearing thickness of moving/fixing contactmm3


3. Standard

---- GB1984-2003

---- IEC60056-2001

---- GB/T16927-1997

----GB/T 4473-2008

---- DL/T403-2000

---- JB/T3855-2008


4. Working Condition

4.1 Ambient air temperature: -25℃~+40℃

4.2 Ambient 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

4.3 Altitude: ≤1000m

4.4 Earthquake intensity: ≤magnitude 8

4.5 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)


China CKVB-24/GB Electrical Circuit Breaker , Medium Voltage Vacuum Circuit Breaker supplier

CKVB-24/GB Electrical Circuit Breaker , Medium Voltage Vacuum Circuit Breaker

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