12kv Indoor 3150A Embedded Structure Vmv Vacuum Circuit Breakers

Model NO.: VMV Operation: Manual and Electrical Type Circuit Breaker Arc-extinguishing Medium: Vacuum Structure: Vcb Circuit Breaker Type: Circuit Breaker Certification: ISO9001-2000, CE Rated Short-Circuit Opening Current: 20/25/31.5/40ka Circuit Breaker Lightning Impluse Withstand Voltage: 75kv Circuit Breaker Transport Package: Plywood for Circuit Breaker Origin: Cixi, Ningbo, Zhejiang for Circuit Breaker Breaking Capacity: High and Medium Voltage Circuit Breaker Speed: Normal Type Circuit Breaker Installation: Fixed and Handcart Type Circuit Breaker Poles Number: 3 Function: Overcurrent Protection Rated Current: 3150A Circuit Breaker Rated Withstand Curent: 50/63/80/100ka Circuit Breaker Trademark: Mingde Circuit Breaker Specification: SGS, TUV HS Code: 8535210000 12kv Indoor 3150A Embedded Structure Vmv Vacuum Circuit Breakers
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 independent operation mechanism makes the standardized production and maintenance 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 breaker 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 process. In this way, it avoids the reduction of mechanical life when vacuum interrupter is over-fatigue, resulted from contact's over-swing.
 
External Dimensions



 VMV 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	12	630-1250	20-31.5	260	205	622	438	609
2	12	630-1250	20-31.5	280	275	637	432	598

 
 

VMV 12----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	12	630-1250	20-31.5	260	205	622	438	609
2	12	630-1600	20-31.5	280	275	637	432	598
3	12	1250-1600	40	295	310	697	432	598
4	12	2000	31.5-40	295	310	697	432	598

 
 

 VMV 12----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	12	630-1250	20-31.5	280	275	637	432	598
2	12	1250-1600	40	295	310	697	432	598
3	12	1600-2500	25-40	295	310	697	432	586
4	12	3150-4000	31.5-40	295	310	697	432	586
5	12	3150-4000	31.5-40	295	310	733	432	586

Main Specification and 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	3150
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

  Normal Operating Environment Condition

a) Normal operating environment condition
Highest temperature:                  +40ºC
Lowest temperature:                   -15ºC
b) Environment humidity
Daily mean relative humidity:        ≤95%
Monthly mean relative humidity:     ≤90%
Daily mean saturated vapor pressure:   ≤2.2×10-3 MPa
Monthly mean saturated vapor pressure:  ≤1.8×10-3 MPa
c) Altitude: below 1000m area;
d) Earthquake intensity: no more than 8 degree;
e) The product shall be away from weep, fire and explosion, chemical corrosion and 
strenuous vibration place.

Special Operating Condition

Please consult with manufacturer on manufacturing technology when operating environment is the climatic environment with high altitude, high humidity and great temperature change or Other special environment condition.


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.
    

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