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Mingde Electrical (Shanghai) Co., Ltd.

Circuit Breaker, Vacuum Circuit Breaker, Breaker manufacturer / supplier in China, offering 24kv-630A Hv Electric Vmd Vacuum Circuit Breaker, 17.5kv -2500A Vmd Indoor Three Phase Vcb in Switchgear, Contact Box Md/150 and so on.

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24kv-630A Hv Electric Vmd Vacuum Circuit Breaker

Purchase Qty.:
(Pieces)
1-99 100+
FOB Unit Price: US $1,360 US $1,040
Purchase Qty. (Pieces) FOB Unit Price
1-99 US $1,360
100+ US $1,040
Get Latest Price
Production Capacity: 22000PCS/Year Breaker
Transport Package: Wooden Case Breaker
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: VMD
  • Operation: Manual & Electric Type Breaker
  • Arc-extinguishing Medium: Vacuum
  • Structure: Vcb Breaker
  • Type: Circuit Breaker
  • Certification: ISO9001-2000
  • Rated Current: 630A Breaker
  • Rated Short-Time Withstand Current: 20/25/31.5A Breaker
  • Rated Short-Circuit Opening Current: 20/25/31.5ka Breaker
  • Trademark: Mingde Breaker
  • Origin: Cixi, Ningbo, Zhejiang Breaker
  • Breaking Capacity: Middle& High Voltage Breaker
  • Speed: Normal Type Circuit Breaker
  • Installation: Fixed & Withdrawal Type Breaker
  • Poles Number: 3
  • Function: Overcurrent Protection
  • Rated Voltage: 24kv Breaker
  • Rated Frequency: 50Hz Breaker
  • Rated Withstand Current(Peak): 50/63/80ka Breaker
  • Mechanical Life: 30000times Breaker
  • Specification: SGS, TUV
  • HS Code: 8535210000
Product Description
24kv-630A HV Electric Vmd Vacuum Circuit Breaker



24kv-630A Hv Electric Vmd Vacuum Circuit Breaker
Product Overview


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 employs an accurate gear driving system in the place of tradidtional chain wheel driving system. With main conductive circuit sealed in epoxy resin, the insulation performance will be more stable. VMD series circuit breaker passed Type Test Report according to GB and IEC standards and has been exported to 26 countries and regions in the world.

Main Parameters

 
NOItemUnitTechnical Data
1Rated voltageKV24
2Rated insulating levelRated short time power frequency withstand voltage(1 min)65
Rated lighting impulse withstand voltage(peak value)125
3Rated frequencyHZ50
4Rated currentA6306301250
125012501600
  2000
2500
5Rated short circuit breaking currentKA202531.5
6Rated short time withstand current202531.5
7Rated peak withstand current506380
8Rated short-circuit making current       (peak value)506380
94S Rated short-time withstand current 202531.5
10Rated peak value of current506380
11Rated making surge current of capacitor bank12.5(The frequency is less than 1000Hz)
12Rated breaking current of single/symmetrical capacitor bank630/400(The value should be 800/400 while the current is 40KA)
13Mechanical life Times10000,30000,60000
14Duration of rated short-circuit currents4
15Power frequency withstand voltage of secondary circuitV2000
16Rated operational voltageMaking coilAC110/220  DC110/220
Breaking coilAC110/220  DC110/220
Energy-storage motorAC110/220  DC110/220
17Making time(under Rated voltage)ms≤60
18Breaking time(under Rated voltage)≤45
19Permitted abrasion thickness of moving and fixed contactsmm3
20Energy storage timeS<=15
21Clearancemm131
22Travel41
23Bounce time(making)ms<=2
24Three pole making/breaking non-simultaneity<=2
25Average breaking speed 1.1~1.7
26Average making speed0.6~1.1
27Contact pumping (breaking)mm≤3
28Conductance circuit resistanceμΩ
 
Withdrawal StyleRated current
≤45630~1250A
≤351600~2000A
≤25More than 2500A
29Rated operating order O-0.3s-CO-180s-CO
 
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

Certification

24kv-630A Hv Electric Vmd 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.


24kv-630A Hv Electric Vmd Vacuum Circuit Breaker
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