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Excellent Product, Best Service
6 Years
| Ask Lasest Price | |
| Brand Name : | Comking |
| Model Number : | CKVB-12/GD |
| Certification : | Type Test Report |
| Payment Terms : | L/C, T/T, Western Union |
| Price : | To be discussed later |
| Delivery Time : | 10-15 work days |
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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