Zhuhai Comking Electric Co.,Ltd.
| Packaging Details | Wooden Packing |
| Delivery Time | 10-15 work days |
| Payment Terms | L/C, T/T, Western Union |
| Rated Voltage | 12kV |
| Rated current | 630A |
| Rated frequency | 50Hz |
| Type | Outdoor |
| Place of Origin | China |
| Brand Name | Comking |
| Certification | ISO9001,ISO14001,OHSAS18001 |
| Model Number | CKWZ |
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Product Specification
| Packaging Details | Wooden Packing | Delivery Time | 10-15 work days |
| Payment Terms | L/C, T/T, Western Union | Rated Voltage | 12kV |
| Rated current | 630A | Rated frequency | 50Hz |
| Type | Outdoor | Place of Origin | China |
| Brand Name | Comking | Certification | ISO9001,ISO14001,OHSAS18001 |
| Model Number | CKWZ | ||
| High Light | outside circuit breaker ，3 phase breaker | ||
1. Description
CKWZ is a three-phase AC outdoor vacuum circuit breaker maximum up to 24kV rated voltage and 50Hz rated frequency.
2. Working Condition
2.1 Ambient air temperature: -45℃～+40℃,daily range of temperature: diurnal variation 25℃
2.2 Relative humidity: daily average data ≤95%, monthly average data ≤90%
2.3 Seismic capacity: ≤magnitude 8, horizontal acceleration ≤ 0.4g, vertical acceleration ≤ 0.2g
2.4 Altitude: ≤1000m
2.5 Pollution classification: IV.
2.6 Wind speed: ≤35m/s
2.7 Applicable in the places without fire, without explosion risk, and without violent vibration
(Exceeding above working condition is available as customized product)
3. Technical Data
| Description | Unit | Parameter | |
| Rated voltage | kV | 12 | 24 |
| Rated frequency | Hz | 50 | 50 |
| Rated current | A | 630 | 630 |
| Rated short-time withstand current(4s) | kA | 20 | 20 |
| Rated peak withstand current | kA | 50 | 50 |
| Rated short-circuit making current(peak) | kA | 50 | 50 |
| Rated short-circuit breaking current | kA | 20 | 20 |
| Breaking times for rated short-circuit breaking current | times | 30 | 30 |
| Mechanical life | times | 10000 | 10000 |
| Power frequency withstand voltage(1min) | kV | 42/48 | 50/60 |
| Lighting impulse withstand voltage | kV | 75/85 | 125/145 |
| Clearance between open contacts | mm | 9±1 | 12±1 |
| Withstand voltage for secondary circuit (1 min) | V | 2000 | 2000 |
| Opening speed | m/s | 1.2±0.2 | 1.4±0.25 |
| Closing speed | m/s | 0.8±0.2 | 0.8±0.2 |
| Bounce time for contact’s closing | ms | ≤2 | ≤2 |
| Opening simultaneity for three-phase | ms | ≤2 | ≤2 |
| Loop resistance (without disconnector) | μΩ | <80 | <80 |
4. Standard
---- GB1984-2003
---- GB/T11022-2011
---- GB/T11023-1989
---- GB311.1-1997
---- DL/T593-1996
---- DL/T402-1999
---- GB/T3309-1989
---- DL403-1999
---- IEC62271-100
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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