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17.5kv Medium-Voltage Electric DC Circuit Breaker of Vmv Series

Basic Info

Model No.:  VMV

Product Description



Model NO.: VMV


Operation: Manual & Electric Circuit Breaker


Arc-extinguishing Medium: Vacuum


Structure: Vcb Circuit Breaker


Type: Circuit Breaker


Certification: ISO9001-2000, Ohsas 180001


Rated Current: 1600A Circuit Breaker


mechanical Life: 10000times Circuit Breaker


Transport Package: Wooden Case Circuit Breaker


Origin: Zhejiang Ningbo Circuit Breaker




Breaking Capacity: Middle& High Voltage Circuit Breaker


Speed: Normal Type Circuit Breaker


Installation: Fixed & Withdrawalable Circuit Breaker


Poles Number: 3


Function: Overcurrent Protection


Rated Voltage: 17.5kv Circuit Breaker


Rated Frequency: 50Hz Circuit Breaker


Trademark: Mingde Circuit Breaker


Specification: OHSAS/ OHSMS 18001, ISO9001


HS Code: 8535210000


17.5kV Medium-voltage Electric DC Circuit Breaker of VMV Series



Product Overview



1. A brand new series of products, wider use in different fields and environment

2. Mechanical life up to 60,000 times

3. Expandable to smart circuit breaker



Operation Mechanism



VMV Modularized Operation Mechanism

VMV Modularized Operation Mechanism (with smart unit)

Modularized design of the operation mechanism is the highlights of VMV circuit breaker. With opening module and closing module in one part, the independent operation mechanism makes the standardized production and maintenance much easier.



Gear Driving System



We improved VMV circuit breakers' driving system, using the gear driving system instead of the traditional chain wheel driving system. The circuit breaker operation will run more smoothly with a longer mechanical life.

Opening Oil Buffer

The application of high-performance oil buffer can greatly reduce moving contact's over-swing and rebound during the circuit breakers' opening process. In this way, it avoids the reduction of mechanical life when vacuum interrupter is over-fatigue, resulted from contact's over-swing.



Main Specifications and Technical 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 1600
Rated short-time withstand current kA 20,25,31.5
Rated peak withstand current kA 50,63,80
Rated short-circuit breaking current kA 20,25,31.5
Rated short-circuit closing current kA 50,63,80
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 Dimension



17.5kv Medium-Voltage Electric DC Circuit Breaker of Vmv Series



VMV2-7.2, 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 Medium-Voltage Electric DC Circuit Breaker of Vmv Series

VMV2-7.2, 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





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.



17.5kv Medium-Voltage Electric DC Circuit Breaker of Vmv Series



Certificates



17.5kv Medium-Voltage Electric DC Circuit Breaker of Vmv Series







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