Zhuhai Comking Electric Co.,Ltd.
| Packaging Details | Wooden Packing |
| Payment Terms | L/C, T/T, Western Union |
| Delivery Time | 10-15 work days |
| Rated voltage | 24kV |
| Rated current | 630A,1250A |
| Rated frequency | 50Hz |
| Type | Indoor |
| Place of Origin | China |
| Brand Name | Comking |
| Certification | Type Test Report |
| Model Number | CKVB-24/G |
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Product Specification
| Packaging Details | Wooden Packing | Payment Terms | L/C, T/T, Western Union |
| Delivery Time | 10-15 work days | Rated voltage | 24kV |
| Rated current | 630A,1250A | Rated frequency | 50Hz |
| Type | Indoor | Place of Origin | China |
| Brand Name | Comking | Certification | Type Test Report |
| Model Number | CKVB-24/G | ||
| High Light | vcb circuit breaker ，electrical circuit breaker | ||
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
2.1 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 | 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
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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