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| Categories | Indoor Vacuum Circuit Breaker | 
|---|---|
| Brand Name: | Comking | 
| Model Number: | CKVB-12/GD | 
| Certification: | Type Test Report | 
| Place of Origin: | China | 
| Payment Terms: | L/C, T/T, Western Union | 
| Packaging Details: | Wooden Packing | 
| MOQ: | 1set | 
| Price: | To be discussed later | 
| Delivery Time: | 10-15 work days | 
| Rated Voltage: | 12kV | 
| Rated Current: | 630A,1250A,1600A,2000A,2500A,3150A,4000A | 
| Rated Frequency: | 50Hz | 
| Type: | Indoor | 
| Company Info. | 
| Zhuhai Comking Electric Co.,Ltd. | 
| View Contact Details | 
| Product List | 
1. Withdrawable circuit breaker CKVB-12/GD
2. 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 | ||||||||||||||||
3. Working Condition
3.1 Ambient air temperature: -25℃~+40℃
3.2 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
3.3 Altitude: ≤1000m
3.4 Earthquake intensity: ≤magnitude 8
3.5 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)
4. Standard
---- GB1984-2003
---- IEC60056-2001
---- GB/T16927-1997
---- GB/T 4473-2008
---- DL/T403-2000
---- JB/T3855-2008
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