Product Details:
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Manufactory: | KNKONG | Voltage: | 12KV |
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Current: | 20KA/25KA/31.5KA/40KA | Type: | Vacuum |
Poles: | 3 | Standards: | ISO9001:2015,CCC,ISO9001,CE, CB,IEC60898 |
High Light: | VCB Vacuum Circuit Breaker,VS1-12 3 Phase VCB,VCB Vacuum Circuit Breaker 40KA |
Vacuum Circuit Breaker VCB 12kv,3-phase AC 50/60Hz VS1-12 series
Product Introduction
"High-voltage vacuum circuit breaker" is named because its arc extinguishing medium and the insulating medium in the contact gap after arc extinguishing are both vacua; vacuum circuit breakers are small in size, light in weight, suitable for frequent operation, and arc extinguishing without maintenance. Advantages, it is more popular in the distribution network.
VS1-Series VCB vacuum circuit breakers are applicable 3-12kV, 3-phase AC 50/60Hz indoor switchgear and can serve as protection and control units for industrial and mining establishment transformer substation equipment. With the modular and independent-frame design for their spring operating mechanisms, VS1 circuit breakers can operate with KYN28 mid-set and fixed switchgear. These circuit breakers are subject to both fixed installation and assembly with the truck as a handcart unit
Normal service condition
Altitude | ≤1000m | |
Ambient temperature | Max | +40℃ |
Min | -15℃ | |
Ambient humidity: Maximum average humidity |
24 hours ≤95% | |
1 month ≤90% | ||
Maximum water vapor pressure | 24 hours ≤2.2kpa | |
1 month ≤1.8kpa |
VS1 Technical Parameters
No. | Item | Unit | Parameter | ||||||
1 | Rated voltage | KV | 12/24 | ||||||
2 | Rated frequency | Hz | 50 | ||||||
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 | |||||||
O-180s-O/C-180s-O/C(40KA) | |||||||||
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 |
The resistance of each phase main circuit |
μΩ |
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 |
Factory
Responsibility: Production research and development MV& LV switch, outdoor&indoor VCB, power distribution terminals (DTU, FTU).
Year of establishing: 10th-June-2009
Registered capital:RMB102,000,000 (USD 15,000,000 )
Company License: 91410104689749184A
Manufacturing workshop area:20,000 square meters
Company nature:private enterprise
Number of Employees:180
Senior engineer:20-30
Annual sales volume on 2019:RMB200,000,000 (USD 26,000,000)
Contact Person: Ken Chan (English)
Tel: 0086 13938551009