Description
The 24kV VS1 medium voltage vacuum circuit breaker, the 2nd generation vacuum switch Mingde Electrical has developed, is a reliable three-phase ac 50HZ circuit controlling equipment that operates at the rated voltage of 24kV. Thanks to their advanced performance, all types of the vacuum circuit breaker can be used in different areas such as the power distributions, hydropower plants, wind power plants, thermal power plants, industrial production, oil and gas companies, offshore operations and urban construction infrastructure.
Equipped with a complete anti-misoperation interlock, this circuit protection device could be used in a working place where frequent operations or repeated opening and closing of the circuit are needed. It could serve as a fixed unit or cooperate with handcart. Switch cabinets as wide as 800mm and 1000mm are applicable to this 24kV vacuum circuit breaker.
Features of the 24kV Medium Voltage Vacuum Circuit Breaker
1. This 24kV vacuum circuit protector meets the Guobiao standard(GB), Electric Power Industry Standard(DL), IEC standard, DIN standards, as well as other related industrial standards;
2. This indoor circuit breaker has been certified to the type test certificate(class A) by the authoritative labs;
3. Of a laconic and compact structure, this vacuum CB consists of fewer components and operates in a more secure and reliable way;
4. Thanks to its compact design, this 24kV vacuum circuit breaker could be installed into nearly any switch cabinet;
5. This circuit controlling device employs a main circuit made of composite insulating materials and an operating mechanism enjoying an integral structure;
6. With a long mechanical life, this electrical circuit protective device supports up to 10,000 operations;
7. This 24kV indoor vacuum circuit breaker enjoys a desirable price ratio and is a choice for an engineering project.
Wide Application
Operating Mechanism
The highly reliable performance of this medium voltage indoor circuit breaker should be accredited to its operating mechanism which is of an integral structure and the mature spring operating mechanism that enjoys a simple structure and reliable performance. The crate, of a frame layout, makes it easier for you to locate each unit and bring convenience to you during maintenance and repair.
Modular Circuit Control Panel
Every circuit breaker provided by Mingde Electrical is designed with a modular circuit control panel which is independently manufactured by the company as well. Different from the conventional circuit breakers, this 24kV vacuum circuit breaker is equipped with several additional small fuses which, cheap and easy to replace, could avoid the burnouts of coils and motors caused by short circuits, expanding the lifespan of the breaker. In order to provide better solutions to you, we could provide custom products to you according to your technological requirements.
Successful Applications
Through cooperation with some domestic remarkable switch cabinets companies, Minde has made this 24kV indoor vacuum circuit breaker be applied by the Sibayak Geothermal Power Plant, a 2X6MW power plant located in the Medan City, North Sumatera, Indonesia.
Technical Parameters of the 24kV Medium Voltage Vacuum Circuit Breaker
NO | Item | Unit | Technical Data | ||||
1 | Rated voltage | kV | 24 | ||||
2 | Rated insulating level | Rated short time power frequency withstand voltage(1min) | 65 | ||||
Rated lighting impulse withstand voltage (peak value) | 125 | ||||||
3 | Rated Frequency | HZ | 50 | ||||
4 | Rated current | A | 630 | 630 | 1250 | 1250 | |
1250 | 1250 | 1600 | 1600 | ||||
2000 | 2000 | ||||||
2500 | 2500 | ||||||
3150 | |||||||
5 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 | 40 | |
6 | Rated short time withstand current | 20 | 25 | 31.5 | 40 | ||
7 | Rated peak withstand current | 50 | 63 | 80 | 100 | ||
8 | Rated short-circuit closing current (peak value) | 50 | 63 | 80 | 100 | ||
9 | 4S rated short-time withstand current 4s | 20 | 25 | 31.5 | 40 | ||
10 | Rated shock steady current | 50 | 63 | 80 | 100 | ||
11 | Duration of rated short-circuit current | S | 4 | ||||
13 | Closing time (under Rated voltage ) | Sms | ≤ 60 | ||||
14 | Opening time ( under Rated voltage) | ≤ 45 | |||||
15 | Average breaking speed | 1.1-1.7 | |||||
16 | Average making speed | 0.6-1.1 | |||||
17 | Rated operating sequence | O- 0.3 -CO-180s-CO | |||||
18 | Mechanical life | times | 10000, 30000 |
Boundary Dimensions Figure of the 24kV Medium Voltage Vacuum Circuit Breaker
Please be noted: displayed above are the dimension figures of part of our products. If you would like to see more, please contact us.