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12kv Indoor Withdrawable Circuit Breaker

Basic Info

Model No.:  VS1

Product Description

Model NO.: VS1 Operation: Manual and Electric Type DC Circuit Breaker Arc-extinguishing Medium: Vacuum Structure: Vcb DC Circuit Breaker Type: Circuit Breaker Certification: ISO9001-2000, CCC, Ohsas 180001 Rated Frequency: 50Hz DC Circuit Breaker Mechanical Life: 10000 Cycles DC Circuit Breaker Specification: ISO9001/OHSAS/OHSMS 18001 HS Code: 8535210000 Breaking Capacity: High and Medium Voltage DC Circuit Breaker Speed: Normal Type Circuit Breaker Installation: Fixed and Handcart Type DC Circuit Breaker Poles Number: 3 Function: Overcurrent Protection Rated Voltage: 12kv DC Circuit Breaker Rated Current: 630/1250/1600/2000/2500/3150/4000A DC Circuit Brea Trademark: Mingde DC circuit breaker Origin: Zhejiang, Ningbo DC Circuit Breaker 12kV Indoor Withdrawable Circuit Breaker 

Product Overview

VS1(ZN63A) series vacuum breaker is of indoor High Voltage Switchgear suitable for 12kV .Three-phase power system with 50Hz frequency in order to protect and control electrical appliances, and especially suitable for frequent operation at rated current or incessant open circuit due to unique advantages of Vacuum Circuit Breaker.
Spring operating mechanism and breaker body parts adopt integration design. Thank for this design, breaker not only can be a fixed installation unit, but also can be a withdraw-able unit with a specially pushing framework. For meet the requirement of XGN2, GG1A cabinet, the fixed type breaker can be install additionally interlock.  

Main Technical Parameters
 
Item unit Data
Rated voltage kV  
12
 
1 min power frequency withstand voltage kV 42
Lightning impulse withstand voltage kV 75
Rated frequency Hz 50
Rated current A 630,1250,
1600,2000
2500,3150,4000
Rated short-time withstand current kA 20,25,31.5,40
Rated peak withstand current kA 50,63,80,100
Rated short-circuit breaking current kA 20,25,31.5,40
Rated short-circuit closing current kA 50,63,80,100
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 Dimensions
12kv Indoor Withdrawable Circuit BreakerVS1A-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 7.2,12 630-1250 20-31.5 260 205 622 438 609
2 7.2,12,17.5 630-1250 20-31.5 280 275 637 432 598

12kv Indoor Withdrawable Circuit BreakerVS1A-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

12kv Indoor Withdrawable Circuit BreakerVS1A-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.  
 

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