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17.5kv -2500A Vmd Indoor Three Phase Vcb in Switchgear

Basic Info

Model No.:  VMD

Product Description

Model NO.: VMD Operation: Manual & Electric Vacuum Interrupter Arc-extinguishing Medium: Vcb Vacuum Interrupter Structure: Vcb Vacuum Interrupter Type: Circuit Breaker Certification: ISO9001-2000 Rated Current: 2500A Vacuum Interrupter Lightning Impulse Withstand Voltage: 95 Kv Vacuum Interrupter Rated Short-Time Withstand Current: 25/31.5 Ka Vacuum Interrupter Rated Short-Circuit Breaking Current: 25/31.5 Ka Vacuum Interrupter Specification: OHSAS/ OHSMS 18001, ISO9001 HS Code: 8535210000 Breaking Capacity: Middle& High Voltage Vacuum Interrupter Speed: Normal Type Circuit Breaker Installation: Fixed & Withdrawal Vacuum Interrupter Poles Number: 3 Function: Overcurrent Protection Rated Voltage: 17.5kv Vacuum Interrupter 1 Min Power Frequency Withstand Voltage: 50 Kv Vacuum Interrupter Rated Frequency: 50 Hz Vacuum Interrupter Rated Peak Withstand Current: 63/80 Ka Vacuum Interrupter Trademark: Mingde Vacuum Interrupter Origin: Cixi, Ningbo Vacuum Interrupter 17.5kV -2500A Vmd Indoor Three Phase VCB in Switchgear  
Overview
 1. The complete specification of VMD series Vacuum Circuit Breaker can meet customers' different needs.
  2. VMD adopts the latest embedded poles and low-resistance vacuum interrupter. With main conductive circuit sealed in epoxy resin, the Insulation performance will be more stable.
  3. VMD employs an accurate gear driving system, instead of the traditional chain wheel driving system.  
  4. VMD series circuit breaker passed Type Test Report according to GB and IEC standards.
  5. VMD series circuit breaker has exported to 26 countries and regions in the world.
   
Main 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 2500
Rated short-time withstand current kA 25, 31.5
Rated peak withstand current kA 63,80
Rated short-circuit breaking current kA 25,31.5
Rated short-circuit closing current kA 50,63
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
  

External Dimensions


17.5kv -2500A Vmd Indoor Three Phase Vcb in Switchgear

 VMD2-7.2,12,17.5-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

17.5kv -2500A Vmd Indoor Three Phase Vcb in SwitchgearVMD2-7.2, 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 -2500A Vmd Indoor Three Phase Vcb in SwitchgearVMD2-7.2, 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
 

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.
  

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