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Product Details:
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| Normal Voltage: | 12KV | Normal Current: | 630-2000A |
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| Breaking Current: | 20-25KA | Type: | Withdrawable |
| Original: | China | Manufactory: | KNKONG-ELECTRIC |
| High Light: | Withdrawable Vacuum Circuit Breaker,12KV Vacuum Circuit Breaker,25KA Modularized Vacuum Circuit Breaker |
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VS1 12KV withdrawable vaccum circuit breaker modularized mechanism
Voltage: 12KV
Current: 630-2000A
Breaking current: 20KA
Type: withdrawable
Product overview
VS1 series circuit breakers are completely independently developed by Knkong. The modular mechanism makes installation, maintenance, testing and operation easier. Compared with traditional circuit breakers, it has more stable operation, higher safety and longer service life. It can meet the application needs of customers in 12kV and 24kV power transmission and distribution systems and is widely used in electric power, energy, petrochemical, metallurgy, manufacturing, transportation, construction, environmental protection and other industries.
Normal service condition
| Altitude | ≤1000m | |
| Ambient temperature | Max | +40℃ |
| Min | -15℃ | |
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Ambient humidity: Maximum average humidity |
24 hours ≤95% | |
| 1 month ≤90% | ||
| Maximum water vapor pressure | 24 hours ≤2.2kpa | |
| 1 month ≤1.8kpa | ||
Special service condition
Technical Parameters
| No. | Item | Unit | Parameter | ||||||
| 1 | Rated voltage | KV | 12 | ||||||
| 2 | Rated frequency | Hz | 50/60 | ||||||
| 3 |
Rated insulation level |
1min power frequency withstand voltage(r. m. s) |
KV |
42(phase-to-phase, phase-to-earth) 48(across the isolating distance) |
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| Lighting impulse withstand voltage (peak) |
75(phase-to-phase, phase-to-earth) 85(across the isolating distance) |
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4 |
Rated current |
A |
630 | 630 | 1250 | 1600 | |||
| 1250 | 1250 | 1600 | 2000 | ||||||
| 2000 | 2500 | ||||||||
| 2500 | 3150 | ||||||||
| 4000 | |||||||||
| 5 | Rated short-circuit breaking current |
KA |
20 | 25 | 31.5 | 40 | |||
| 6 | Rated short-time withstand current | 20 | 25 | 31.5 | 40 | ||||
| 7 | Rated short-circuit marking current | 50 | 63 | 80 | 100 | ||||
| 8 | Rated peak withstand current | 50 | 63 | 80 | 100 | ||||
| 9 | Rated duration of short-circuit | s | 4 | ||||||
| 10 | Rated operating sequence | O-0.3s-O/C-180s-O/C | |||||||
| 11 | Breaking times of rated short-circuit current | Times | 30/20 times(40KA) | ||||||
| 12 | Mechanical endurance | Ops | 20000 | ||||||
| 13 | Rated single capacitor bank breaking current |
A |
630 | ||||||
| 14 | Rated back-to-back capacitor bank breaking current | 400 | |||||||
| 15 | Double-earth fault breaking current | 27.4 | |||||||
| 16 | Allowable maximum contact erosion |
mm |
3 | ||||||
| 17 | Clearance between open contacts | 10±1 | |||||||
| 18 | Over stroke | 3.5±0.5 | |||||||
| 19 | Non-simultaneity of 3-phase opening and closing |
ms
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≤2 | ||||||
| 20 | Bounce duration of contact closing | ≤2 | |||||||
| 21 | Average breaking speed (instant breaking 6mm) |
m/s
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1.1±0.2 | ||||||
| 22 | Average making speed | 0.8±0.2 | |||||||
| 23 | Making time |
ms
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≤100 | ||||||
| 24 | Breaking time | ≤50 | |||||||
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25 |
Resistance of each phase main circuit |
μ Ω |
630A | ≤50 | |||||
| 1250A | ≤45 | ||||||||
| 1600A~2000A | ≤35 | ||||||||
| ≥2500A | ≤25 | ||||||||
| 26 | Contact breaking bounce amplitude | mm | ≤2 | ||||||
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27 |
Rated operating voltage | Rated operating voltage(V)AC/DC |
V |
24* | 110 | 220 | |||
| Scope of normal operation voltage | Opening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage, opening operation is not allowed | ||||||||
| 28 | Rated voltage of energy storage motor | V | AC110/220, DC110/220 | ||||||
| 29 | Energy storage time | S | ≤15 | ||||||
Contact Person: Antonio
Tel: +8613607680651
