Description
The 17.5kV VS1 MV vacuum circuit breaker is the 2^nd generation high voltage three-phase AC, 50Hz indoor electrical switch which operates at a rated voltage of 17.5kV. Now the fixed CB and withdrawable CB are available to you which are highly interchangeable with each other. Switchgear as wide as 650mm, 800mm or 1000mm are applicable to the series breakers.

Thanks to its advanced performance, the high voltage vacuum circuit breaker, as equipment of the power grids and the controlling and protective units of power equipment in the industrials and mines, can be widely used in such areas as the power distributions, hydropower plants, wind power plants, thermal power plants, oil and gas industrials, offshore operations and urban infrastructure constructions.

Features of the 17.5kV Vacuum Circuit Breaker
1. Examples from both overseas and domestic areas show that this electrical circuit protection unit could run for over a decade;
2. Of an integral simple structure, this high voltage circuit breaker operates quite smoothly and stably;
3. This series 17.5kV indoor circuit breaker enjoys a highly reliable performance and seldom needs maintenance and repayment;
4. Equipped with complete interlocks, this series circuit controlling equipment could effectively ensure the safety of operators and your equipment;
5. The 17.5kV circuit breakers employ a main circuit made of composite insulating materials and an operating mechanism of an integral structure;
6. All high voltage CBs 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. Thanks to their highly reliable performance, these vacuum circuit breakers have been widely applied around the world especially in the Poland market.

Wide Application of 17.5 Vacuum Circuit Breaker

Operating Mechanism

The highlight of the operating mechanism of this 17.5kV indoor circuit breaker lies in its integral simple structure and the mature spring operating mechanism which enjoys a laconic design and reliable performance. Meanwhile, the crate of this indoor circuit device is designed with a frame structure that makes the layout of functional units very clear and brings convenience to maintenance. The minimum phase space of this series equipment could be 150mm.

Complete Anti-misoperation Interlock

All the 17.5kV vacuum circuit breakers are equipped with the complete anti-misoperation interlocks which could protect the operators and the electrical equipment by preventing mis-operations. (see the figure)

1. closing interlocking bent plate;
2. closing bent plate;
3. interlocking bent plate;
4. pin bolts;
5. idler wheel;
6. lock plate.

Modular Circuit Control Board

The circuit control board of this 17.5 kV high voltage vacuum circuit breaker is designed according to your specific needs. Different from that of the traditional VS1, this penal is equipped with couples of additional mini fuses which, cheap and easy to replace, could effectively avoid electronic components from being burnt.

Successful Application

As a reliable manufacturer and supplier of electrical power products, Mingde electrical has been devoting itself to proving quality products and secure and efficient electrical power solutions to customers. In 2012, this indoor circuit protection device were selected and applied by the leading electrical power industrial company in Poland—the Tauron company. Enjoying a good quality and desirable price ration, this series circuit controlling equipment could help customers save their investment in equipment.

Technological Parameters of 17.5kV Vacuum Circuit Breaker

Operating environment condition

a) Normal operating environment condition:
Highest temperature: 40℃;
Lowest temperature: -15℃;

b) Environment Humidity:
Dailyaverage relative humidity: ≤95%;
Monthlyaverage relative humidity: ≤90%;
Daily average saturated vapor pressure: ≤2.2×10-3 MPa;
Monthly average saturated vapor pressure: ≤1.8×10-3 MPa;

c) Altitude: below 1000m area;

d) Earthquake intensity: lower than 8 degree;

e) The product shall be away from weep, fire and explosion, chemical corrosion and strenuous vibration place.

Boundary Dimensions Figure

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