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Home > Products > Circuit Breaker > Similar Vd4 Circuit Breaker (VMV) of Fixed Type

Similar Vd4 Circuit Breaker (VMV) of Fixed Type

Basic Info

Model No.:  VMV

Product Description



Model NO.: VMV


Operation: Manual and Electrical Type Vacuum Circuit Breaker


Arc-extinguishing Medium: Vacuum


Structure: Vcb Vacuum Circuit Breaker


Type: Circuit Breaker


Certification: ISO9001-2000, CE


Rated Short-Circuit Opening Current: 20/25/31.3ka Vacuum Circuit Breaker


Lightning Impluse Withstand Voltage: 75kv Vacuum Circuit Breaker


Trademark: Mingde Vacuum Circuit Breaker


Specification: SGS, Tuv


HS Code: 8535210000




Breaking Capacity: High and Medium Voltage Vacuum Circuit Breaker


Speed: Normal Type Circuit Breaker


Installation: Fixed and Handcart Type Vacuum Circuit Breaker


Poles Number: 3


Function: Overcurrent Protection


Rated Current: 630/1250/1600/2000/2500/3150/4000A Vacuum Circuit


Rated Withstand Curent: 50/63/80ka Vacuum Circuit Breaker


Mechanical Life: 60000 Times Circuit Breaker


Transport Package: Plywood Vacuum Circuit Breaker


Origin: Cixi, Ningbo, Zhejiang Vacuum Circuit Breaker


Similar VD4 Circuit Breaker (VMV) of Fixed Type



Overview



1. A brand new series of products, wider use in different fields and environment.

2. Mechanical life up to 60,000 times.

3. Expandable to smart circuit breaker.



Operation Mechanism



VMV Modularized Operation Mechanism (with smart unit)

Modularized design of the operation mechanism is the highlights of VMV circuit breaker. With opening module and closing module in one part, the ind-ependent operation mechanism makes the standardized production and mai-ntenance much easier.



Gear Driving System



We improved VMV circuit breakers' driving system, using the gear driving system instead of the traditional chain wheel driving system. The circuit bre-aker operation will run more smoothly with a longer mechanical life.



Opening Oil Buffer



The application of high-performance oil buffer can greatly reduce moving contact's over-swing and rebound during the circuit breakers ' opening proce-ss. In this way, it avoids the reduction of mechanical life when vacuum interr-upter is over-fatigue, resulted from contact's over-swing.



External Dimensions



Similar Vd4 Circuit Breaker (VMV) of Fixed Type



VMV2-7.2,12-pole center distance 150mm




No. Rated Voltage(kV) Rated current(A) Short-circuit breaking current(kA) h1(mm) h2(mm) h(mm) A(mm) B(mm)
1 7.2,12,17.5 630-1250 20-31.5 260 205 622 438 609
2 7.2,12,17.5 630-1250 20-31.5 280 275 637 432 598











Similar Vd4 Circuit Breaker (VMV) of Fixed Type





VMV2-7.2, 12, 17.5-pole center distance 210mm




No. Rated Voltage(kV) Rated current(A) Short-circuit breaking current(kA) h1(mm) h2(mm) h(mm) A(mm) B(mm)
1 7.2,12,17.5 630-1250 20-31.5 260 205 622 438 609
2 7.2,12,17.5 630-1600 20-31.5 280 275 637 432 598
3 7.2,12 1250-1600 40 295 310 697 432 598
4 7.2,12 2000 31.5-40 295 310 697 432 598











Similar Vd4 Circuit Breaker (VMV) of Fixed Type




VMV2-7.2, 12, 17.5-pole center distance 275mm




No. Rated Voltage(kV) Rated current(A) Short-circuit breaking current(kA) h1(mm) h2(mm) h(mm) A(mm) B(mm)
1 7.2,12,17.5 630-1250 20-31.5 280 275 637 432 598
2 7.2,12 1250-1600 40 295 310 697 432 598
3 7.2,12 1600-2500 25-40 295 310 697 432 586
4 7.2,12 3150-4000 31.5-40 295 310 697 432 586
5 7.2,12 3150-4000 31.5-40 295 310 733 432 586







Technical Parameters





Item

unit

Data

Rated voltage

kV

12

1 min power frequency withstand voltage

kV

42

Lightning impulse withstand voltage

kV

75

Rated frequency

Hz

50

Rated current

A

630,1250,1600,2000,2500,3150,4000

Rated short-time withstand current

kA

20,25,31.5,40

Rated peak withstand current

kA

50,63,80,100

Rated short-circuit breaking current

kA

20,25,31.5,40

Rated short-circuit closing current

kA

50,63,80,100

Rated short-circuit duration

S

4

Contact over-travel

mm

3.5±0.5

Clearance between open contacts

mm

9±1/11±1

Average opening speed

m/s

1.1±0.2

Average closing speed

m/s

0.6±0.2

Opening time

ms

35-60

Closing time

ms

20-45

Rated operation sequence

O-0.3s-CO-180s-CO(<40kA)/

O-180s-CO-180s-CO(40kA)

Mechanical life

cycles

10000,30000,60000








Packaging, Transportation and Storage Precautions





(1) Circuit breaker should be in the state of opening and energy storage spring in a state without energy storage when packing. It should be in the state of opening and energy storage spring in a state without energy storage when packing. And it should be fixed on the bottom of the wooden case, should have waterproof measures and complete package labels.

(2) Circuit breakers can't invert and avoid strong vibration, rain, surface damage, and components lost when transportation.

(3) When loading the circuit breaker, we suggest the following tools: crane, forklift and driving. When lifting the circuit breaker, we should not hook on the body or pole of the circuit breaker, but on the lifting hole which has the lifting mark.

(4) When circuit breaker has a long-term storage, it should be in a state of opening and energy storage spring in a state without energy storage and placed in dry ventilated indoor preventing from moisture, vibration control and harmful gas erosion, and regularly checked whether environment meets the requirements.

(5)When first use products after long-term storage, it need to have a power frequency withstand voltage Insulation testing.

Similar Vd4 Circuit Breaker (VMV) of Fixed Type






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