ZN68-12/1250-25 Vacuum Circuit Breaker is a type of indoor HV electric apparatus of rated voltage 12/40.5KV, three-phase AC 50/60HZ, produced by using the technic of Siemens. The VCB features with simple structure, long mechanical life, strong breaking capability, multiple functions and convenient maintenance.It is safe from explosion, thus applicable in power house and substation to control and protect electricity distribution systems. In addition, it is especially applicable at essential position and in occassions with frequent operation.
Vacuum circuit breaker features:
① airtight insulation system (shell)
The airtight insulation system made of ceramic, glass or glass-ceramic is a vacuum-tight container, which is made of airtight insulating cylinder, movable end cover, fixed end cover and stainless steel bellows. In order to ensure air tightness, in addition to the strict operation of the sealing process, but also requires the material itself and the internal air permeability of small gas permeability.
② conductive system
By the fixed conductive rod, fixed arc surface, fixed contact, moving contact, moving arc surface, moving conductive rod composition. There are three contact structure: cylindrical contacts, with a spiral groove running arc surface of the transverse magnetic field contacts, vertical magnetic field contacts. At present the use of vertical magnetic field technology, such arc quenching chamber with a strong and stable arc breaking capacity.
③ shielding system
Shield is a vacuum interrupter indispensable components, and there are around the contact of the main shield, bellows shield and pressure shielding with a variety of shielding. The role of the main shield is: a arc to prevent arc generated during the arc sprayed to the insulation inside the shell, thus reducing the insulation strength of the shell. B improve the uniformity of the electric field inside the arc chamber, is conducive to reducing the local field strength, to promote the vacuum interrupter miniaturization. C condensation arc products, absorb part of the arc energy, contribute to the back-arc gap dielectric strength recovery.
1.You inquuiry related to our products or prices will be replied in 12 hours .
2.Well-trained and experienced staffs to answer all your enquires in fluent english
3.OEM & ODM, any your any requirements we can help you to design and put into product.
4.Protection of you sales area ,ideas of design and all your private information.
5. If any problems resulted from quality and mal-manufacturing, our after-sales service will help you solve these problems.
6. We will help you with technical problems during installation and marketing.
Looking for ideal 12kV 3AF VCB Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the 12kV 3AF Indoor Type VCB are quality guaranteed. We are China Origin Factory of 12kV 3AF Fixed VCB. If you have any question, please feel free to contact us.
Product Categories : Vacuum Circuit Breaker > 12kV Vacuum Circuit Breaker