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Withdrawable Solid Sealed Pole VCB Circuit Breaker 20KA Breaking

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Withdrawable Solid Sealed Pole VCB Circuit Breaker 20KA Breaking

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

Using Voltage : 12KV

Running Current : 630A 1250A 1600A 2000A

Breaking capacity : 20KA

Type : withdrawable

Original : Zhengzhou, CHINA

Manufactory : KNKONG-ELECTRIC

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VS1 series Withdrawable Solid sealed pole VCB vacuum circuit breaker 20KA breaking

Voltage: 12KV-24 KV

Current: 630-1250A-1600A-2000A

Breaking current: 20KA

Type: withdrawable/fixed

Product overview

Secondary circuit

Vacuum circuit breaker is an indoor switchgear for a power system with a three-phase AC 50Hz rated voltage of 12KV. The civil melting vacuum circuit breaker is used as a protection and control unit for power grid equipment and power equipment in industrial and mining enterprises. It is suitable for places that require frequent operation under rated working current, or where short-circuit current is frequently interrupted.

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

Withdrawable Solid Sealed Pole VCB Circuit Breaker 20KA Breaking


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