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AC 50Hz 17.5kv- 2500A Vmd Vacuum Universal Circuit Breaker

Basic Info

Model No.:  VMD

Product Description

Model NO.: VMD Operation: Manual & Electric DC Circuit Breaker Arc-extinguishing Medium: Vcb DC Circuit Breaker Structure: Vcb DC Circuit Breaker Type: Circuit Breaker Certification: ISO9001-2000 Rated Current: 2500A DC Circuit Breaker Lightning Impulse Withstand Voltage: 95 Kv DC Circuit Breaker Rated Short-Time Withstand Current: 25/31.5 Ka DC Circuit Breaker Rated Short-Circuit Breaking Current: 25/31.5 Ka DC Circuit Breaker Specification: OHSAS/ OHSMS 18001, ISO9001 HS Code: 8535210000 Breaking Capacity: Middle& High Voltage DC Circuit Breaker Speed: Normal Type Circuit Breaker Installation: Fixed & Withdrawal DC Circuit Breaker Poles Number: 3 Function: Overcurrent Protection Rated Voltage: 17.5kv DC Circuit Breaker 1 Min Power Frequency Withstand Voltage: 50 Kv DC Circuit Breaker Rated Frequency: 50 Hz DC Circuit Breaker Rated Peak Withstand Current: 63/80 Ka DC Circuit Breaker Trademark: Mingde DC circuit breaker Origin: Cixi, Ningbo DC Circuit Breaker AC 50Hz 17.5kV- 2500A Vmd Vacuum Universal Circuit Breaker 
  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 2000
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 Dimension


AC 50Hz 17.5kv- 2500A Vmd Vacuum Universal Circuit Breaker
  VMD2-7.2, 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

AC 50Hz 17.5kv- 2500A Vmd Vacuum Universal Circuit Breaker VMD2-7.2, 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.

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.
 
Certification
AC 50Hz 17.5kv- 2500A Vmd Vacuum Universal Circuit Breaker 

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