Gold Member Since 2015
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Mingde Electrical (Shanghai) Co., Ltd.

Circuit Breaker, Breaker, Vacuum Circuit Breaker manufacturer / supplier in China, offering China Manufacture 7.2 Kv-1250A Vmd Withdrawable Vacuum Circuit Breaker, 17.5kv -2500A Vmd Indoor Three Phase Vcb in Switchgear, Contact Box Md/150 and so on.

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Supplier Homepage Product Circuit Breaker China Manufacture 7.2 Kv-1250A Vmd Withdrawable Vacuum Circuit Breaker

China Manufacture 7.2 Kv-1250A Vmd Withdrawable Vacuum Circuit Breaker

Purchase Qty.:
(Pieces)
1-99 100+
FOB Unit Price: US $1,640 US $1,280
Purchase Qty. (Pieces) FOB Unit Price
1-99 US $1,640
100+ US $1,280
Get Latest Price
Production Capacity: 22000PCS/Per Year Circuit Breaker
Transport Package: Wooden Case Circuit Breaker
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: VMD
  • Operation: Mannual & Electric Type Circuit Breaker
  • Arc-extinguishing Medium: Vacuum
  • Structure: Vcb Circuit Breaker
  • Type: Circuit Breaker
  • Certification: ISO9001-2000, CCC, Ohsas 180001
  • Rated Current: 1250A Circuit Breaker
  • Mechanical Life: 10000 Times
  • Specification: CE, SGS, TUV
  • HS Code: 8535210000
  • Breaking Capacity: Middle& High Voltage Circuit Breaker
  • Speed: Normal Type Circuit Breaker
  • Installation: Fixed & Withdrawal Circuit Breaker
  • Poles Number: 3
  • Function: Overcurrent Protection
  • Rated Voltage: 7.2kv Circuit Breaker
  • Rrated Short-Time Withstand Current: 20\25\31.5kv Circuit Breaker
  • Trademark: Mingde Circuit Breaker
  • Origin: Cixi, Ningbo Circuit Breaker
Product Description
China Manufacture 7.2 Kv-1250A Vmd Withdrawable Vacuum Circuit Breaker


China Manufacture 7.2 Kv-1250A Vmd Withdrawable Vacuum Circuit Breaker
        The complete specification of VMD series vacuum circuit breaker can meet customers' different needs.
It adopts the latest embedded poles and low-resistance vacuum interrupter and empolys an accurate gear driving system in the place of the traditional chain wheel driving system.

         With main conductive circuit sealed in epoxy resin, the insulation performance will be more stable.VMD series circuit breaker has passed Type Test Report according to GB and IEC standards.It has exported to 26 countries and regions in the world.


Main Specifications and Technical Parameters of VMD

 
NOItem UnitTechnical Data
1Rated voltageKV7.2
21 min power frequency withstand voltage42
Lighting impulse withstand voltage(peak value)75
3Rated FrequencyHz50
4Rated currentA1250
5Rated short time withstand currentKA20,25
6Rated withstand current(peak)50,63
7Rated short-circuit opening current20,25
8Rated short-circuit closing current 50,63
9Rated duration of short-circuit S4
10Contact's clearance 3.5±0.5
11Contact's travel 9±1/11±1
12Average opening speedm/s1.1±0.2
13Average closing speed m/s0.6±0.2
14Opening timems35-60
15Closing timems20-45
16Mechanical life times30000
17Rated operating order O-0.3S-CO-180S-CO(<40KA)
O-180S-CO-180S-CO(≥40KA)
 
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

China Manufacture 7.2 Kv-1250A Vmd Withdrawable Vacuum Circuit Breaker
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.
China Manufacture 7.2 Kv-1250A Vmd Withdrawable Vacuum Circuit Breaker
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