Fixed Type 205 Phase Spacing VCB Circuit Breaker Environmental Protection
Brand Name:KNKONG
Certification:CB,ISO,IEC
Model Number:VS1-12
Minimum Order Quantity:1
Delivery Time:15 working days
Payment Terms:L/C, T/T, Western Union
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Location:
Zhengzhou Henan China
Address:
No. 25 Street , Hanghai Road, Zhengzhou,Henan,China
Supplier`s last login times:
within 11 hours
Product Details
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Product Details
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
The circuit breaker has anti-mis-lock protection and "5 guarantees"
interlocking function to avoid misoperation and protect the
personal safety of operators to the greatest extent.
Only when the circuit breaker and the grounding switch are in the
off position, the circuit breaker cart can roll from the test
position to the service position
The circuit breaker can only be closed in the service/test
position.
After the circuit breaker is closed, the truck cannot be rolled in
or out, only when the circuit breaker is in the open position.
The circuit breaker cannot be rolled out from the service position
to the test position in the closed position.
The circuit breaker cannot be closed when pushed in.
When the circuit breaker is closed, if the closing signal is not
released in time, the internal anti-trip control circuit will cut
off the closing circuit to prevent multiple reclosing (optional).
If electric closing and locking is selected, when the secondary
circuit cannot provide power or the power provided cannot satisfy
the normal operation of the locking electromagnet (optional), the
circuit breaker will not be closed.
Fixed Type 205 Phase Spacing VCB Circuit Breaker Environmental Protection
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