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17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers

Basic Info

Model No.:  VMV

Product Description

Model NO.: VMV Operation: Manual & Electric Circuit Breaker Arc-extinguishing Medium: Vacuum Structure: Vcb Circuit Breaker Type: Circuit Breaker Certification: ISO9001-2000, Ohsas 180001 Rated Current: 12500A Circuit Breaker mechanical Life: 60000times Circuit Breaker Specification: SGS, TUV HS Code: 8535210000 Breaking Capacity: Middle& High Voltage Circuit Breaker Speed: Normal Type Circuit Breaker Installation: Fixed & Withdrawalable Circuit Breaker Poles Number: 3 Function: Overcurrent Protection Rated Voltage: 17.5kv Circuit Breaker Rated Frequency: 50Hz Circuit Breaker Trademark: Mingde Circuit Breaker Origin: Zhejiang Ningbo Circuit Breaker 17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers 

Product 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
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.

Main Specifications and Technical Parameters 
 
Item unit Data
Rated voltage kV 17.5
1 min power frequency withstand voltage kV 50
 
Lightning impulse withstand voltage kV 95
Rated frequency Hz 50
Rated current A 1250
Rated short-time withstand current kA 20,25,31.5
Rated peak withstand current kA 50,63,80
Rated short-circuit breaking current kA 20,25,31.5
Rated short-circuit closing current kA 50,63,80
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


External Dimension

17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers

  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
 
17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers
  VMV2-7.2, 12,17.5pole 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
 
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.


Certifications

17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers 

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