China Outdoor Vacuum Circuit Breaker Manufacturers Suppliers Factory

Professional Outdoor Vacuum Circuit Breaker Manufacturers In China

Zhejiang Shone Vacuum Electrical Apparatus Co., Ltd. is the specialized pressure vacuum breaker, vacuum interrupter production of high manufacturers. The company is located in Hangzhou high tech Development Zone, convenient transportation, superior production environment. product design reasonable, advanced technology, strict inspection, development speed, product quality and stability.

Why Choose SHONEVAC

Rich Experience

The company not only with the production of vacuum devices need all kinds of advanced equipment and testing equipment, but also has professional and technical personnel engaged in research, production of vacuum device and a rich experience of manufacturing, high quality staff team.

Stable Quality

The company has advanced production lines and testing equipment, and each product undergoes strict inspection before shipment. We are devoted to creating high quality products and the stability of electricity transmission and distribution systems of state grid, and to be the national first-class enterprise in this area.

One-stop Services

We will provide the most suitable solution according to your needs. Any problems that arise during use will be tracked and solved by our customer service staff.

High Voltage Vacuum Circuit Breaker
Ambient air temperature:-40℃-+45℃ , daily average temperature not over 25℃
Air relative humidity:daily average not over 95%,month average not over 90%
Altitude:not over than 3000m
read more
Outdoor Pole Mounted Vacuum Circuit Breaker
The Vacuum Circuit Breaker (VCB) is a sophisticated switching device designed for the operational switching (on-off operations) of individual circuits or electrical equipment under both normal and...
read more

Features of Outdoor Vacuum Circuit Breaker

Vacuum Interrupter: The main component of an outdoor vacuum circuit breaker is a vacuum interrupter. This sealed chamber contains contacts that open and close the circuit under normal and fault conditions. The vacuum inside the interrupter extinguishes the arc that forms when the contacts separate, ensuring reliable interruption of the current.

Weatherproof Enclosure: Outdoor vacuum circuit breakers are housed in weatherproof enclosures to protect them from environmental factors such as rain, dust, and extreme temperatures. These enclosures are typically made of durable materials like stainless steel or aluminum to provide long-lasting protection.

Insulation: Outdoor vacuum circuit breakers feature high-quality insulation to prevent flashovers and ensure the safe operation of the equipment even in harsh outdoor conditions. The insulation materials used are resistant to moisture and UV radiation.

Outdoor Pole Mounted Vacuum Circuit Breaker

Mechanical Interlocks: To ensure operator safety, outdoor vacuum circuit breakers often have mechanical interlocks that prevent the breaker from being opened while it is energized or closed while there is voltage on the terminals. These interlocks help prevent accidents and injuries during maintenance or troubleshooting activities.

Remote Control and Monitoring: Many outdoor vacuum circuit breakers are equipped with remote control and monitoring capabilities. This allows operators to open and close the breaker remotely, monitor its status, and receive alarms or notifications in case of abnormal conditions.

Easy Maintenance: Outdoor vacuum circuit breakers are designed for easy maintenance. They often have removable covers or panels that provide access to key components for inspection, cleaning, or replacement if necessary.

Specification of Outdoor Vacuum Circuit Breaker

Name	Unit	Value
Rated voltage	KV	40.5
1min power frequency withstand voltage (effective value)	KV	95
Lightning impulse withstand voltage (effective value)	KV	185
Rated frequency	Hz	50
Rated current	A	1250,1600,2000
Rated short-time withstand current	KA	25,31.5
Rated peak withstand current	KA	63,80
Rated short circuit duration	S	4
Rated short-circuit breaking current	KA	25,31.5
Rated short circuit closing current	KA	63,80
Rated operation sequence		0-0.3s-Co-180s-Co
Break time	Ms	＜80
Rated short-circuit breaking current breaking times	Time	20
Single capacitor bank breaking current	A	630
Back-to-back capacitor bank breaking current	A	400
Rated operating voltage	V	~110/-110,~220/-220
Mechanical life	Time	10000

Application of Outdoor Vacuum Circuit Breaker

Electric Transmission
It is probably one of the applications where the use of this unit is seemingly common.Electric transmission stations use various components to ensure that all the aspect of transmitting electricity is feasible and efficient.So as the central power station, the use of outdoor vacuum circuit breakers becomes inevitable.

Electric Transformers
This is also the other area where the application of outdoor vacuum transformers seems to be very common.An electric transformer is designed to transfer electrical energy between two or more circuits via electromagnetic induction.So, it clearly shows that the use of the outdoor circuit breaker in these devices is essential as it helps to regulate the electrical energy transferred.

Electrical Boxes
In various industries, you’ll realize that the use of electrical enclosures is becoming common.The ideal reason is primarily that these boxes are useful in storing and protecting various electrical components and instruments.And given that they house a wide range of electric instruments and components, there is a need for making sure that they work effectively.One way of attaining this, definitely, is by integrating vacuum circuit breaker as a way of ensuring that they do not short-circuit.

Composition of Outdoor Vacuum Circuit Breaker

The outdoor vacuum circuit breaker is composed of a vacuum interrupter, an operating mechanism, a transmission mechanism, and a chassis. The vacuum arc extinguishing consists of static contact, moving contact, shielding cover, shell, bellows, protective tube, conductive rod, end cover plate, etc. The contact of the vacuum interrupter generally adopts the butt type, which is prone to bounce phenomenon. In order to prevent the overvoltage caused by the bounce, there are special requirements for the material of the contact, and it is required that there is sufficient initial pressure and final pressure during the closing process. The bounce time should not exceed 2ms.

The contact material of the vacuum circuit breaker is required to have the characteristics of resistance to welding, arc resistance, low water content, and low current interception level, so as to reliably meet the short-circuit current. Multi-element alloys are generally used to make contacts. The components of the vacuum interrupter are sealed in a glass shell, and the glass shell itself also plays an insulating role. In order to seal the movable conductive rod, a bellows is used, which is an elastic element, through which the vacuum interrupter can complete the opening and closing operations under the action of the operating mechanism without damaging the vacuum.

During the opening operation of the vacuum circuit breaker, due to the high insulation strength of the high vacuum and the rapid diffusion of the charged particles generated by the arc between the contacts in the extremely thin gas, it will not reignite after the arc is extinguished at zero crossing. The metal vapor and charged particles in the arc combustion process are absorbed and condensed by the shielding cover during the intense diffusion. There are three Archimedes spiral grooves on the arcing surface of the contacts, so that the arc current generates a transverse magnetic field between the contacts on the path that the arc current flows through, so that the arc current quickly moves in the tangential direction on the main contact, thereby reducing The temperature of the contact is reduced, and the burning of the contact is reduced.

Install of Outdoor Vacuum Circuit Breaker

The product should be installed in a place where it is easy to operate, and it should be installed in different positions on the column according to the position of the switch. The circuit breaker body can choose single pole installation or double pole installation.

The installation steps are:
(1) First fix the controller; the controller is commonly known as the watchdog control, it is divided into a round controller (also called a hat controller), and the other is a square controller. Under normal circumstances, the lower controller Backup battery available.

(2) Connect the external wiring; the intelligent vacuum circuit breaker has only two to three external wirings. Hat-type controllers generally have two lines, one is the main line connecting the controller and the switch body, and the other line is called the prepaid line, which is used to connect the meter for cost control. There is no prepaid fee and this line does not need to be connected. If the controller is square, it may have a second wire, this wire is used to connect the PT transformer and power supply. The specific connection line still needs to see the description of the on-site controller.

(3) Install a rain cover; this is also worth noting, doing a good job of rain protection will increase the service life of the switch body and the controller.

(4)Connect the grounding of the controller to the grounding of the switch.

Our Certificate

p20241216145940d652b.jpg (1200×448)

FAQ

Q: How many types of vacuum circuit breakers are there?

A: Vacuum circuit breakers can be divided into: pole-mounted type (insulation cylinder) and pole-enclosed type (epoxy resin casting) according to the installation method of the pole. Generally speaking, circuit breakers have high voltage, low voltage and medium voltage.

Q: What is the difference between indoor and outdoor circuit breakers?

A: Outdoor breaker boxes are built to withstand harsh weather conditions, such as extreme heat, cold, rain, and snow, whereas indoor boxes are not designed to handle such conditions. Outdoor boxes are made of weather-resistant materials, which help prevent damage from environmental factors.

Q: What are the advantages of a vacuum breaker?

A: A vacuum breaker allows air to enter the system to equalize the pressure and ensure safe operational conditions. Without this safety component, there is the potential for damage, collapse, or rapid implosion. A vacuum breaker can also prevent a siphon and backflow contamination.

Q: Which circuit breaker is frequently used for outdoor hv application?

A: Vacuum breakers are being used for outdoor applications ranging from 22kV to 66kV. They are also suitable for majority of applications in several areas even with limited rating say 60 to 100MVA.

Q: What is the pressure in a vacuum circuit breaker?

A: Vacuum circuit breakers have a steel arch chamber located in the center. They are symmetrically built and stacked in ceramic insulators. The vacuum interrupter maintains a vacuum pressure between 10 to 6 bar.

Q: Can a vacuum breaker be installed sideways?

A: The following are general installation requirements for vacuum breakers: Must be installed in a vertical position. Shall be installed “in line” and be the same size of the supply piping.

Q: Can your factory produce according to customer's requirements?

A: Yes, customize products are acceptable. Please send us the detail information by E-mail or Whatsapp.

Q: What's your package standard?

A: Usually we use standard foam and carton for package. If you have special requests, we can also according to your requirements.

Q: Can we visit your company?

A: Yes, for sure, you are welcome to visit our company.

As one of the leading outdoor vacuum circuit breaker manufacturers and suppliers in China, we warmly welcome you to buy high quality outdoor vacuum circuit breaker at competitive price from our factory. Contact us for customized service.

High Voltage Vacuum Circuit Breaker, outdoor vacuum circuit breaker, Outdoor Pole Mounted Vacuum Circuit Breaker