Zhuhai Comking Electric Co.,Ltd.
| Payment Terms | L/C, T/T, Western Union |
| Packaging Details | Wooden Packing |
| Delivery Time | 10-15 work days |
| Rated Voltage | 12kV |
| Rated Current | 630A,1250A,1600A,2000A,2500A,3150A,4000A |
| Rated Frequency | 50Hz |
| Type | Indoor |
| Brand Name | Comking |
| Model Number | CKVB-12/GC |
| Certification | Type Test Report |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Packaging Details | Wooden Packing |
| Delivery Time | 10-15 work days | Rated Voltage | 12kV |
| Rated Current | 630A,1250A,1600A,2000A,2500A,3150A,4000A | Rated Frequency | 50Hz |
| Type | Indoor | Brand Name | Comking |
| Model Number | CKVB-12/GC | Certification | Type Test Report |
| Place of Origin | China | ||
| High Light | electrical circuit breaker ，3 phase circuit breaker | ||
1. CKVB-12/GC is withdrawable circuit breaker.
2. Working Condition
2.1 Ambient air temperature: -25℃～+40℃
2.2 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
2.3 Altitude: ≤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
Company Details
Business Type:
Manufacturer
Year Established:
2006
Employee Number:
300~500
Ecer Certification：
Active Member
Zhuhai Comking Electric Co., Ltd. was founded in 2006 in Zhuhai, China. With our European partners we are now recognized as a leading manufacturer in power transmission and distribution industry throughout China and Asia. We are specialized in manufacturing of vacuum circuit breaker, so... Zhuhai Comking Electric Co., Ltd. was founded in 2006 in Zhuhai, China. With our European partners we are now recognized as a leading manufacturer in power transmission and distribution industry throughout China and Asia. We are specialized in manufacturing of vacuum circuit breaker, so...
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