In electrical engineering, a vacuum interrupter is a switch which uses electrical contacts in a vacuum. It is the core component of medium and high voltage circuit-breakers, generator circuit-breakers, such as vacuum circuit breaker(VCB)s, load break switch(LBS)s, contactors and recloser. Separation of the electrical contacts results in a metal vapour arc, which is quickly extinguished. Vacuum interrupters are widely used in utility power transmission systems, power generation unit, and power-distribution systems for railways, arc furnace applications, mining industry and industrial plants.
Product Advantages And Features
A major advantage of vacuum interrupters is that it is an environmentally friendly and easily recyclable technology, unlike other interrupting mediums such as SF6 and oil. SF6 gas is an effective insulating medium for switchgear applications, but is classed as a greenhouse gas and has a global warming potential 23,900 times higher than Carbon Dioxide (CO2) according to the Intergovernmental Panel on Climate Change (IPCC). With growing concern on environmental damage that SF6 causes, it is subject to handling and disposal regulations that increase its life cycle cost. Using a vacuum interrupter housed in solid dielectric insulation ensures that utilities are using a sustainable technology. Vacuum interrupter has great recovery strength, eliminating the need for capacitors to reduce the steepness of the transient recovery voltage (as required in most SF6 generator circuit breakers); And vacuum interrupter has high mechanical and electrical durability with significantly higher numbers and frequency of possible switching operations without maintenance.
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![Vacuum Interrupter for Vacuum Circuit Breaker]()
Vacuum Interrupter for Vacuum Circuit BreakerThe vacuum interrupter, also referred to as a vacuum switch tube, constitutes a critical element within high-voltage power switching devices. This component's primary function is to extinguish arcs through leveraging the superiorread more -
![Vacuum Interrupter for MV VCB]()
Vacuum Interrupter for MV VCBThe manufacturing process of vacuum interrupters ensures they are sealed for lifetime, eliminating the need for ongoing monitoring systems or periodic tightness tests as stipulated in IEEE Standard C37.100.1, paragraph 6.8.3. This hermeticread more -
![Vacuum Interrupters for Circuit Breaker]()
Vacuum Interrupters for Circuit BreakerThe adoption of vacuum technology for the switching of electrical currents was driven by the realization that a one-centimeter gap within an X-ray tube could sustain voltages in the tens of thousands. While early patents for vacuumread more -
![Vacuum Interrupter for Load Break]()
Vacuum Interrupter for Load BreakIn the field of electrical engineering, a vacuum interrupter is a sophisticated switching device that employs electrical contacts housed within a vacuum-sealed enclosure. This technology serves as a fundamental component in medium-voltageread more -
![Vacuum Interrupter for Load Break Switch]()
Vacuum Interrupter for Load Break SwitchA vacuum interrupter utilizes a high vacuum environment to extinguish the arc that forms between a pair of contacts. As the contacts begin to separate, the current initially flows through a progressively smaller area, leading to a sharpread more -
![Bottle for Load Break Switch]()
Bottle for Load Break SwitchA vacuum interrupter typically consists of one fixed contact and one moving contact, a flexible bellows that allows the movement of the moving contact, and arc shields enclosed within a hermetically sealed glass, ceramic, or metal housingread more -
![Vacuum Interrupter for Vacuum Contactor]()
Vacuum Interrupter for Vacuum ContactorVacuum interrupter(VI) for contactor is mainly used to frequently connect and cut off the normal working current.This series of vacuum interruper adopt ceramic insulating envelope and Cu(W+WC) contact materials with low chopping value.Thisread more -
![Vacuum Interrupters for AC Contactors]()
Vacuum Interrupters for AC ContactorsA vacuum interrupter uses a high vacuum to extinguish the arc between a pair of contacts. As the contacts move apart, current flows through a smaller area. There is a sharp increase in resistance between the contacts, and the temperatureread more -
![Ceramic Shell Vacuum Interrupter]()
Ceramic Shell Vacuum InterrupterThe vacuum interrupter is a highly engineered device that combines advanced materials, precise manufacturing techniques, and rigorous testing to provide reliable and efficient switching in high-voltage electrical systems. Its design andread more -
![Recloser Vacuum Interrupter]()
Recloser Vacuum InterrupterTo ensure optimal performance and reliability, all components of the vacuum interrupter must be thoroughly cleaned before assembly. Contaminants can emit gases into the vacuum envelope, compromising the high vacuum required for effectiveread more -
![Medium Voltage Vacuum Interrupter]()
Medium Voltage Vacuum InterrupterVacuum interrupter is the core component of the circuit breaker, which is composed of ceramic cylindrical tube section, metal cover and internal contacts.Medium-voltage vacuum circuit breaker is a kind of circuit breaker that utilizesread more -
![High Voltage Vacuum Interrupter]()
High Voltage Vacuum InterrupterHigh voltage vacuum interrupter, also called vacuum switching tube, is the core component of medium and high voltage power switch. Its role is to allow medium and high voltage circuits to cut off the power supply can quickly extinguish theread more
Product Type
In Voltage
less than 1kV vacuum interrupter - 0.46kV
1kV-10kV vacuum interrupter- 1.14kV, 4.5kV, 7.2kV
10kV-72.5kV vacuum interrupter- (10kV 11kV 12kV 15kV), (20kV 24kV 25.6kV 26kV), (35kV 36kV 38kV 40.5kV)
72.5kV-145kV vacuum interrupter- 72.5kV, 126kV
Usage
Vacuum interrupter for vacuum circuit breaker
Vacuum interrupter for load break switch
Vacuum interrupter for contactor
Vacuum interrupter for recloser
Application Of The Product
Applications and uses include circuit-breakers, generator circuit-breaker, load switches, motor contactors, and reclosers. Special-purpose vacuum interrupters are also manufactured, such as those used in transformer tap changers or in electrical arc furnaces.
Material Of The Product
Copper, ceramic, stainless steel..
Production Process Or Procedure
1. Parts Production / Parts Purchasing
2. Parts Inspection
3. General Assembly
4. Bakeout and Exhaust
5. Install Wire Thread Insert, Tag and Record
6. High Voltage Conditioning (dry, oil)
7. Vacuum Degree Test
8. Guide Sleeve Sealing
9. Factory Test
10. Packing
Components Of The Product
Ceramic bottle,Movable conductive rod, Fixed conductive rod,Plate,Bellows, Contacts...
Product Maintenance And Precautions
1 Before installation, the surface of the vacuum interrupter should be wiped clean to make it a good electrical contact with the conductive components.
2 During installation, the screw-in depth of fastening bolts should be less than or equal to the thread depth marked on the product drawing, and the fastening should be done symmetrically and evenly.
3 When installing the fixed end of the vacuum interrupter, ensure that the bolts are aligned with the screw holes, and when tightening the bolts, the torque should not exceed the specified torque value.(See Schedule)
4 When installing the movable end, ensure that the bellows are not twisted, that is, the movable conductive rod can’t rotate relative to the bellows. When installing, first fix the milled flat part of the movable conductive rod with a wrench, and then screw in and fix the connecting parts to prevent the rotation of the movable conductive rod from damaging the bellows. The torque applied to the movable conductive rod shouldn’t exceed the specified torque value. (See Schedule)
5 Adjust the installation position of the conductive clip on the movable conductive rod, and tighten the fastening bolts.
6 For the installation of the vacuum interrupter, there should be a guiding device on the mechanism, ensure the coaxiality design of the movable conductive rod to the vacuum interrupter’s axis meets requirements, the bellows is free from torsion, and the movable conductive rod can move freely.
7 After installing the vacuum interrupter, carefully check the fastening of each bolt and nut, and wipe off the dirt on surface with clean cotton cloth, and then adjust the switch device. After a certain number of manual and no-load operations, make the mechanical performance stabilized and meet the parameter requirements in the technical conditions.
FAQ
Q: Why choose vacuum switch?
A: Vacuum switch has good arc extinguishing characteristics, suitable for frequent operation, long electrical life, high operating reliability, long maintenance cycle, and has been widely used in the world's power industry, urban and rural power grid transformation, chemical industry, metallurgy, railway electrification, mining and other industries.
Q: What is a vacuum interrupter?
A: The vacuum interrupter is the most important component in a vacuum switch.
Q: Why choose SHONEVAC?
A: SHONEVAC is one of the top vacuum interrupter manufacturers in China.It has an experienced technical team, decades of production experience, a fast feedback mechanism, preferential prices, and a sincere attitude of cooperation.
Q: How does a vacuum interrupter work?
A: A vacuum interrupter uses a high vacuum to extinguish the arc between a pair of contacts. As the contacts move apart, current flows through a smaller area.
Q: How does an interrupter switch work?
A: The magnetic polarity is so arranged that a permanent magnet underneath the arm then repels the pivot arm and causes the circuit to break, but the prongs at the other end of the pivot arm then close an identical circuit at that end and the procedure repeats endlessly.
As one of the leading vacuum interrupter manufacturers and suppliers in China, we warmly welcome you to buy high quality vacuum interrupter at competitive price from our factory. Contact us for customized service.
Voltage Interrupter, VCB Interrupter, Vacuum Interrupter For Vacuum Circuit Breaker-
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