FN7-12D 12KV LBS indoor Medium voltage load break switch with earthing switch
ABB NAL series 12KV LBS medium voltage load break switch for RMU similar as
12KV MV Outdoor Off-Load overhead line isolator disconnector LBS load break switch
As a protection and control unit for power grid equipment and industrial and mining enterprise power design
Mainly used for opening closing the power system load current, overload current and short - circuit current
12KV MV VCB outdoor high voltage vacuum circuit breaker with controller
What is a vacuum circuit breaker?
A vacuum circuit breaker is a circuit breaker quenching arc in a vacuum medium. The on-off, on-off, and associated arc breaking operations with current contacts are carried out in the vacuum chamber of the circuit breaker, known as the vacuum circuit breaker.
Vacuum as arc extinguishing medium in circuit breaker is called vacuum circuit breaker because the vacuum has superior arc extinguishing performance so that it has high insulation strength. This applies to most standard voltage applications, as for higher voltages, vacuum techniques are developed but are not commercially viable.
The LN2-40.5 indoor high-voltage SF6 circuit breaker is an indoor device in the AC 50Hz three-phase system and can be used for protection and control in industrial and mining enterprises, power plants, and substations (stations).
SW2-66 (SW2-72.5 abroad) oil-less circuit breaker is an outdoor three-phase AC 50Hz high-voltage power equipment.
AB-3S-12 outdoor high-voltage fast permanent magnet vacuum circuit breaker adopts the principle of vacuum arc extinguishing and permanent magnet operating mechanism, integrating microprocessing technology, modern network communication technology and new switch manufacturing materials.
Using a vacuum arc extinguishing chamber, air insulation, and an electric spring operating mechanism, the product has strong arc extinguishing ability, many short-circuit opening times, no fire and explosion hazard, and is easy to operate.
The FZW28-12 series outdoor AC high-voltage demarcation vacuum load switch is suitable for outdoor three-phase AC power distribution systems with a rated voltage of 12KV and a rated frequency of 50H.
The ZW32-12 outdoor AC high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an outdoor power distribution equipment with a rated voltage of 12kV and a three-phase AC 50Hz.
ZW32Y-12 outdoor AC high-voltage prepaid vacuum circuit breaker is suitable for use as prepaid high-voltage metering in power systems with three-phase AC 50Hz and rated power 12kV.
ZW43-12 outdoor high-voltage vacuum circuit breaker is a miniaturized product of ZW32 circuit breaker.
ZW32-24 outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is an outdoor power distribution equipment with a rated voltage of 24kV and three-phase AC 50Hz.
ZW32-40.5 outdoor AC high-voltage demarcation vacuum circuit breaker is mainly composed of integrated solid-sealed poles, current transformers, operating mechanisms and boxes.
The working principle of the vacuum circuit breaker is that once the circuit breaker contact is disconnected in a vacuum, the contact is ionized by the metal vapor in the contact and produces an arc. However, due to the rapid condensation of electrons, ions, and metal vapors generated in CB contact outside the arc, the arc is easily quenched, so dielectric strength can be quickly restored. The most important feature of a vacuum is that once an arc is created in a vacuum, it can be extinguished quickly due to the rapid increase in the dielectric strength of the vacuum.
Characteristics of vacuum circuit breaker
Compared with other types of circuit breakers, the insulation medium of vacuum circuit breakers has higher requirements on arc suppression performance. The pressure in the vacuum blocker is about 10-4 for the flood, which includes very few molecules in the blocker. This circuit breaker basically has the following two characteristics.
Compared with other insulating media used in circuit breakers, the circuit breaker is a superior insulating medium. It is superior to other media except for SF6 and air because these media are used at high pressure.
Application of vacuum circuit breaker
A vacuum circuit breaker is currently recognized as the most reliable medium voltage switching current interruption technology. It requires minimal maintenance compared to other circuit breaker technologies.
The technology is mainly suitable for medium voltage applications. For high-pressure vacuum technology has been developed, but it is not commercially feasible. The vacuum circuit breaker is suitable for both metal-clad switchgear and ceramic clad circuit breaker.
Supplier of vacuum circuit breaker
Zhejiang JGGY Electrical Co.,Ltd (jggyelectric.com), JGGY Electrical was established in 2007, specializing in the manufacture, sales and service of high-voltage electrical products. We mainly specializes for 6~42kV medium voltage electric (outdoor and indoor): load break switch, Disconnector, cutout fuse, Surge Arrester, vacuum circuit Breaker. Over the years, JGGY have been successfully used in important fields such as electric power, communications, chemicals, mining, metallurgy, transportation, petroleum, and railways.
Get a quote on the latest price of vacuum circuit Breaker, load break switch, Disconnector, cutout fuse, Surge Arrester from JGGY. We will reply within 24 hours.
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