Knkong Electric Co.,Ltd
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 1000 Unit per month |
| Delivery Time | 15 working days |
| Packaging Details | Standard export packaging |
| Voltage | 12KV |
| Current | 630A |
| Breaking current | 25KA |
| Type | Fixed |
| Original | China |
| Manufactory | KNKONG |
| Brand Name | KNKONG |
| Model Number | VS1-12 |
| Certification | CB,ISO,IEC |
| Place of Origin | China |
View Detail Information
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Supply Ability | 1000 Unit per month |
| Delivery Time | 15 working days | Packaging Details | Standard export packaging |
| Voltage | 12KV | Current | 630A |
| Breaking current | 25KA | Type | Fixed |
| Original | China | Manufactory | KNKONG |
| Brand Name | KNKONG | Model Number | VS1-12 |
| Certification | CB,ISO,IEC | Place of Origin | China |
| High Light | Fixed Type VCB Circuit Breaker ，25KA Spacing VCB Circuit Breaker ，12KV Spacing VCB Circuit Breaker | ||
VS1-12 fixed type 205 phase spacing Vacuum Circuit Breaker 12KV 630A
Voltage: 12KV
Current: 630A
Breaking current: 20KA
Type: Fixed
Product overview
VS1-Series circuit breakers are complete independently developed by Knkong based on the advanced design concept; it adopts a modularized mechanism, which is easy for installation, maintenance, testing, and operation. As compared with conventional VS1 circuit breaker. it features higher operation stability, higher safety, and extended service life. The product can satisfy customers demand application in 12kv and 24kV power transmission and distribution systems, which is extensively applied in such industries as power, energy, petrochemical engineering, metallurgy, manufacture, traffic, building, and environmental protection as well as large-scale enterprises and national key projects
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) | |||||
| Lighting impulse withstand voltage (peak) | 75(phase-to-phase, phase-to-earth) 85(across the isolating distance) | ||||||||
|
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
| ≤2 | ||||||
| 20 | Bounce duration of contact closing | ≤2 | |||||||
| 21 | Average breaking speed (instant breaking 6mm) | m/s
| 1.1±0.2 | ||||||
| 22 | Average making speed | 0.8±0.2 | |||||||
| 23 | Making time | ms
| ≤100 | ||||||
| 24 | Breaking time | ≤50 | |||||||
|
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 | ||||||
|
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 | ||||||
Operation safety
Company Details
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
1000000-9000000
Employee Number:
50~100
Ecer Certification：
Active Member
Knkong Electric Co., Ltd (Zhengzhou Knkong Mechanical And Electrical Co., Ltd)was established in 2012. A wholly-owned subsidiary of Henan Sanhe Electric Group. We are mainly responsible for overseas market exporting, electronic components, and technology import. Relying on a h... Knkong Electric Co., Ltd (Zhengzhou Knkong Mechanical And Electrical Co., Ltd)was established in 2012. A wholly-owned subsidiary of Henan Sanhe Electric Group. We are mainly responsible for overseas market exporting, electronic components, and technology import. Relying on a h...
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