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Fixed Type Vacuum VCB Circuit Breaker With Environmental Protection

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Fixed Type Vacuum VCB Circuit Breaker With Environmental Protection

Brand Name : KNKONG

Model Number : VS1-12

Certification : CB,ISO,IEC

Place of Origin : China

MOQ : 1

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-24KV

Current : 630A-2000A

Breaking current : 25KA

Type : Fixed

Original : China

Manufactory : KNKONG-ELECTRIC

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Fixed type 205mm phase spacing vacuum circuit breaker with environmental protection

Voltage: 12KV-24KV

Current: 630A-2000A

Breaking current: 20KA-25KA

Type: Fixed

Product overview

"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 vacuum; 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.
Vacuum circuit breakers can usually be divided into multiple voltage levels. The low-voltage type is generally used for explosion-proof electrical applications. Like coal mines and so on.

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

Fixed Type Vacuum VCB Circuit Breaker With Environmental Protection


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Vacuum VCB Circuit Breaker

      

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