Active Member
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[China]
Address: No.6, Futian Road, Xiangzhou,Zhuhai,China 519000
Contact name:Sabrina Yang
Zhuhai Comking Electric Co.,Ltd. |
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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
