17.5kV VMV3 Indoor Vacuum Circuit Breaker

17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
17.5kV VMV3 Indoor Vacuum Circuit Breaker
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Description
1. This 17.5kV VMV3 indoor circuit breaker is a reliable electrical switch that employs an optimized drive system and a modularized spring operating mechanism.
2. Of a side-mounted structure, this 17.5kV indoor circuit protection equipment requires a much smaller switchgear, saving the space and production cost.
3. This indoor vacuum circuit breaker, the 4th generation vacuum circuit breaker, is an elaborately designed and manufactured product by Mingde Electrical.
4. The built-in charging handles of the indoor CB make it easier to carry and hardly to lose.
5. Thanks to its advanced design and reliable performance, this indoor circuit protection equipment could be used in such extremely harsh environments as the extremely cold areas in Siberia of Russia, deserts in Mid-east, and the plateau areas in western China.
6. All our vacuum circuit breakers meet the Guobiao standard (GB), Electric Power Industry Standard (DL), IEC standard, DIN standards, as well as related standards of other developed industrial countries;
7. This VMV3 indoor power supply breaker has passed the type tests of Guobiao standards (GB) and IEC standard, as well as the national appraisals.
8. The mechanism lifespan of this indoor safety switch could be up to 60,000 times.
9. This VMV series vacuum circuit controlling equipment has been exported to over 26 countries around the world.

Wide Application of the 17.5kV VMV3 Indoor Vacuum Circuit Breaker

Owing to its scientific design and reliable performance, the circuit breakers have been wildly used in many areas, such as the power plants, power grids, industrial productions, mines, offshore operations and constructions.

Spring Operating Mechanism

The highly reliable performance of this high voltage breaker is partially accredited to its mature spring operating mechanism.

Modular Operating Mechanism

This modular operating mechanism is a highlight of this 17.5kV distribution-type circuit breakers. As the closing and tripping units are integrated into one independent part, this vacuum CB is quite desirable for standard productions and enjoys a shorter production circle, easier maintenance and convenient replacement. Besides, all the modules consist of components which are universal for all types of this circuit breaker. Therefore, consumers could spend less in the equipment management and maintenance.

Optimized Gear Drive System

In order to promote our products and satisfy customers’ requirements, we have improved the overall design of our circuit breaker’s operating mechanism and developed this 4th generation vacuum CB-the high voltage indoor switching device which enjoys a simple and compact structure and all the components it employs are standard parts that can be used universally. Furthermore, instead of the traditional chain-wheel drive system, this CB adopts a unique gear drive system which enables the breaker to run more smoothly and stably, and enjoy an expanded mechanical endurance.

Automatic Circuit Breaker Production Line

Each circuit protection device provided by our company are manufactured on the automatic circuit breaker production line designed and developed by our senior engineers according to our production needs and features of our products. Each production process on this automatic line is controlled and monitored by the computer. Thanks to this production line, our manufacturing capacity has been substantially promoted and each year we could provide 12,000 breakers to customers.

Complete Product Property Testing and Detection Equipment

Our company has several complete sets of mechanical property testing and detection equipment which is used to test the entire technical parameters of every circuit breaker before the delivery. The strict test and detection we conduct could effectively ensure a stable quality of each breaker by avoiding the possible malfunctions that happens to it during its operation.

Moreover, to assure all our products enjoy a consistent good quality and meet the ISO9001: 2008 standards, each indoor VCB is manufactured by advanced production processes and would go through the conventional tests and inspections. And none single breaker would be delivered before the very responsible person submits a test report with his or her signature, a report that could ensure the product tractability and quality of the breakers.

Successful Application of the 17.5kV VMV3 Indoor Vacuum Circuit Breaker

Based on our rich experience and strong research and development capacity, Minde Electric has been proving many advantageous and reliable electrical power equipment. This17.5kV indoor circuit breaker, the 4th generation vacuum circuit breaker we’ve developed, is especially a trustworthy and safe circuit protection device which has gained trust and favors from customer from aboard and at home. This picture shows that this modular vacuum circuit breaker has been successfully applied by the Jaworzno power plant of Poland.

Technical Parameters of the 17.5kV Indoor Vacuum Circuit Breaker

NOItemUnitTechnical Data
1Rated voltagekV17.5
2Rated insulating levelRated short time power frequency withstand voltage(1min)50
Rated lighting impulse withstand voltage (peak value)95
3Rated FrequencyHz50
4Rated currentA630 , 1250,1600
5Rated short circuit breaking currentkA20 , 25 , 31.5
6Rated short time withstand current20 , 25 , 31.5
7Rated peak withstand current50 , 63 , 80
8Rated short-circuit closing current (peak value)50 , 63 , 80
94S rated short-time withstand current 4s20 , 25 , 31.5
10Rated shock steady current50 , 63 , 80
11Duration of rated short-circuit currentS4
13Closing time (under Rated voltage ) Sms35-70
14Opening time ( under Rated voltage) 20-45
15Average breaking speed1.2 ± 0.2
16Average making speed0.7 ± 0.2
17Rated operating sequence O- 0.3 -CO-180s-CO
18Mechanical lifetimes10000, 30000

Boundary Dimensions Figure of the 17.5kV Indoor Vacuum Circuit Breaker

The boundary dimensions figure of the fixed indoor electrical switchgear. (phase space: 210mm)

Please be noted: displayed above are the dimension figures of part of our products. If you would like to see more, please contact us.

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