China Maintenance tips for high voltage vacuum circuit breakers Manufacturers, Suppliers, Factory

The FZN25-12D type vacuum load break switch and FZRN25-12D type combination appliance adopt a overall structure where the operating mechanism is arranged on the side of the main circuit (available in right or left side arrangement according to user's needs). The main conducting part consists of insulation cover, static contact, movable contact, conductive cylinder, and vacuum arc chamber. The combination appliance also includes a current-limiting fuse. This product uses the TF351 type vacuum arc-extinguishing chamber with a ceramic outer casing and 25 copper contacts. It features a flat contact structure, which results in minimal electrical wear and a long service life. With high breaking and closing capabilities, it offers strong performance and easy operation and maintenance. The fused switch is integrated with the operating mechanism, combining the functions of an isolating switch, load switch, and grounding switch into one compact structure. It has a small size, convenient installation, and flexible operation. The switch is equipped with a dynamic isolated contact and a vacuum arc-extinguishing chamber, which are arranged in series and linked according to the specified operating procedure, achieving a one-time operation. The cone-shaped static contact, insulation cover, and movable contact structure separate the busbar and load switch units, ensuring the personal safety of workers. When the grounding switch is closed, the movable contact automatically isolates the breaking point, providing excellent protection. The switch, grounding switch, movable contact, and cabinet door light are strictly in accordance with the "five preventions" mechanical interlocking to prevent misoperation. The switch mechanism is a spring-stored energy type, featuring both manual and electric energy storage functions. Once energy storage is complete (with the spring at the midpoint), it will automatically close, and for opening, it can be done manually with a decoupling lever or by an electromagnetic coil. This facilitates the implementation of remote control requirements for switch opening and closing operations. The switch can be powered by both AC and DC sources, and its working principle is similar to that of a circuit breaker. It is generally equipped with a simple arc extinguishing device, but its structure is relatively simple. The diagram shows a type of compressed air high-voltage load break switch. During breaking, under the action of the opening spring, the main shaft rotates clockwise. On one hand, the piston moves upward by compressing the gas through the crank-slider mechanism; on the other hand, the transmission system composed of two sets of four-link mechanisms opens the main contact first, and then the arc extinguishing contacts, blowing out the arc with the compressed air from the nozzle. When closing, the main contact and arc extinguishing contacts rotate clockwise at the same time under the action of the main shaft and the transmission system, with the arc contacts closing first and then the main contacts closing subsequently. During closing, the opening spring is also storing energy. As the load break switch cannot interrupt short-circuit currents, it is often used in combination with a current-limiting high-voltage fuse to not only complete the function of breaking the circuit but also reduce the thermal and mechanical forces caused by short-circuit currents.

The MNS series low voltage withdrawable switchgear is a reliable and efficient solution for power distribution in various industries and applications. With its advanced design and innovative features, this series offers improved safety, flexibility, and ease of use. One of the standout features of the MNS series is its withdrawable design. This allows for easy installation, maintenance, and replacement of components, without the need for interrupting power supply. The withdrawable modules are designed to be easily inserted and removed from the switchgear, providing a quick and convenient solution for any modifications or repairs. The MNS series is built with the highest standards of safety in mind. It is equipped with protection devices such as circuit breakers and relays to ensure reliable operation and safeguard against overloads, short circuits, and other electrical faults. The switchgear also includes features like interlocking mechanisms and safety shutters to prevent accidental access to live parts, ensuring the safety of personnel working on the equipment. Flexibility is another key feature of the MNS series. It is designed to meet the specific requirements of different applications, with a wide range of options available for components such as circuit breakers, busbars, and control devices. The modular design allows for easy customization and expansion, making it suitable for various configurations and future upgrades. The MNS series is also known for its high performance and efficiency. It is built with durable materials and advanced engineering, ensuring long-lasting operation and minimal maintenance requirements. The switchgear is designed to handle high currents and withstand harsh environmental conditions, making it suitable for demanding industrial environments. In addition, the MNS series incorporates smart technologies for enhanced monitoring and control. It can be integrated with advanced communication systems, allowing for remote monitoring, diagnostics, and control of the switchgear. This enables proactive maintenance and troubleshooting, leading to improved operational efficiency and reduced downtime. Overall, the MNS series low voltage withdrawable switchgear is a reliable, safe, and efficient solution for power distribution. Its withdrawable design, advanced safety features, flexibility, and performance make it an ideal choice for a wide range of industries and applications.

The FLN36-12 indoor SF6 load break switch is a high-voltage switchgear suitable for use in a rated voltage of 12kV. It is designed with SF6 gas as an arc-extinguishing and insulation medium, ensuring safe and reliable operation. This load break switch is characterized by its small volume, making it suitable for installations with limited space. Its convenient installation and operation procedures make it user-friendly and efficient. Additionally, it exhibits great adaptability to various surroundings and environments. The FLN36-12 load break switch, along with the BRFLN36-12D combination of SF6 load switch and fuse, is designed to protect and control electrical equipment in power supply and transformer substations. It is especially well-suited for applications such as ring net cabinets, cable branch cabinets, and distribution switching substations. Both the FLN36-12 load break switch and the BRFLN36-12D combination of load switch and fuse comply with the standards set by IEC60265-1-1998 and IEC60420. This ensures their adherence to strict quality and safety regulations, providing peace of mind to users. In summary, the FLN36-12 indoor SF6 load break switch is a reliable and efficient solution for high-voltage power distribution. With its compact size, easy installation, and versatile adaptability, it offers a convenient and effective solution for controlling and protecting electrical equipment.

VS1 (ZN63) high voltage indoor vacuum circuit breaker is a cutting-edge electrical device designed to ensure safe and efficient power distribution in high voltage systems. Equipped with a permanent magnetic operating mechanism, this circuit breaker utilizes a vacuum arc extinguishing chamber, where vacuum serves as both the arc extinguishing and insulation medium. When the live operation of the VS1-12 vacuum circuit breaker is initiated, the dynamic and static contacts within the operating mechanism create a vacuum arc between them. Additionally, the unique structure of the contacts generates an appropriate longitudinal magnetic field within the contact gap. This causes the vacuum arc to assume a diffusion form and enables it to uniformly distribute across the contact surfaces, maintaining a low arc voltage. As the current naturally crosses zero, the residual ions, electrons, and metal vapors rapidly recombine or deposit on the contact surfaces and shield, restoring the dielectric strength of the arc extinguishing chamber. Consequently, the arc is extinguished, achieving the desired breaking effect. The utilization of a magnetic field to control the vacuum arc empowers the VS1 vacuum circuit breaker with a robust and stable breaking current capacity. In summary, the VS1 (ZN63) high voltage indoor vacuum circuit breaker possesses advanced features that allow for efficient and reliable power distribution in high voltage applications. By utilizing vacuum technology and a magnetic control mechanism, this circuit breaker ensures the safe interruption of electrical currents, presenting itself as an excellent choice to safeguard various electrical installations and systems.

The GGJ Three Phase Energy Saving Compensation Device with Low Voltage Switchgear is a high-performance solution for optimizing energy usage and improving electrical system efficiency. This device is designed specifically for industrial and commercial use, offering significant cost savings, enhanced power quality, and reduced environmental impact. The GGJ device performs three key functions: energy compensation, power factor correction, and harmonics filtering. By continuously monitoring and analyzing the power grid, it automatically adjusts the reactive power output to maintain a stable power factor and minimize energy wastage. Built with advanced technology and premium components, the GGJ device ensures reliable and durable performance. Its wide operating voltage range makes it suitable for various low voltage power distribution systems. Moreover, its compact and modular design simplifies installation and maintenance, saving valuable time and resources. The intelligent control features of the GGJ device enable real-time data measurements, intelligent power factor control, and self-diagnostic capabilities. This allows users to effectively monitor and manage their electrical systems, ensuring optimal performance and energy efficiency. Along with energy savings, the GGJ device effectively filters harmonics and associated distortions. This protects connected devices from damage, overheating, and excessive energy losses. With this dependable protection mechanism, the device enhances the lifespan of electrical equipment and improves overall system reliability. The GGJ Three Phase Energy Saving Compensation Device with Low Voltage Switchgear complies with industry standards and safety regulations while prioritizing environmental sustainability. It is suitable for various applications, including manufacturing plants, commercial buildings, hospitals, and shopping malls. By investing in the GGJ device, businesses can achieve substantial energy savings, reduce carbon emissions, and improve their financial bottom line. This cost-effective solution optimizes power quality and energy consumption, paving the way for a sustainable future. In summary, the GGJ Three Phase Energy Saving Compensation Device with Low Voltage Switchgear is a versatile and reliable solution that brings numerous benefits to industrial and commercial electrical systems. Its advanced technology, intelligent control features, and compact design make it an essential tool for optimizing energy consumption, improving power quality, and reducing environmental impact.

The FZRN25-12 type AC high-voltage vacuum load switch-fuse combination electrical appliance is an indoor device with a rated voltage of 12KV and suitable for three-phase AC 50Hz. It is designed for use in industrial and mining sectors, enterprises, distribution substations, and power stations, serving the purposes of load control and short circuit protection. The equipped grounding switch is capable of withstanding short circuit current. The operating mechanism can be manual or electric, facilitating the fulfillment of three-remote control requirements in the power system. The FZRN25-12 type load switch and combination electrical appliance are suitable for load control and short circuit protection in municipal distribution substations and industrial power equipment supplied by three-phase ring networks or terminal power. Being more reliable and cost-effective in providing protection to transformers and other electrical equipment compared to circuit breakers, they are particularly suitable for ring networks, dual radiation power supply units, and compact substations.