China 35kv high voltage cable distribution junction box Manufacturers, Suppliers, Factory

12kV Indoor High Voltage Vacuum Circuit Breaker with Isolator in Gas Insulated Switchgear (GIS) The 12kV Indoor High Voltage Vacuum Circuit Breaker with Isolator is a vital component in Gas Insulated Switchgear (GIS). Designed for indoor use, this product offers reliable and efficient operation in high voltage applications. The GIS is comprised of various components, including a circuit breaker, isolator, grounding switch, current transformer, surge arrester, busbar, connectors, and outgoing terminals. All of these devices or parts are enclosed within a metal-grounded housing. The housing is filled with SF6 insulation gas, which is pressurized to ensure optimal performance. This characteristic has earned it the nickname "SF6 Fully Enclosed Combined Electrical Device." The 12kV Indoor High Voltage Vacuum Circuit Breaker plays a critical role in the GIS system. It is responsible for interrupting and isolating electrical circuits under fault conditions. Equipped with vacuum interrupter technology, this circuit breaker offers excellent arc quenching capability and enhanced reliability. Furthermore, the Isolator in this GIS system provides a means to isolate individual components or sections for maintenance or repair without disrupting the entire system. This feature ensures flexibility and convenience during installation and maintenance activities. Operating at a voltage level of 12kV, this GIS product is suitable for various indoor applications where high voltage switching is required. It offers excellent performance, reliability, and safety. In summary, the 12kV Indoor High Voltage Vacuum Circuit Breaker with Isolator is a key component of Gas Insulated Switchgear. Its integration within the GIS system allows for efficient electrical switching operations in high voltage applications. With advanced technologies and a fully enclosed design, this product guarantees reliable performance and utmost safety.

In order to better adapt to the new situation of economic, social and power grid development, improve the power supply capacity and adaptability of the distribution network, reduce the loss and power supply cost of the distribution network, save land resources, and meet the development needs of the power system for "boosting, increasing capacity, upgrading and optimizing the channel", On the basis of digesting and absorbing foreign advanced technologies and design concepts, our company has designed and manufactured YBM-24/0.4 series of "HV/LV prefabricated substation" (European box type substation) with 20kV distribution voltage grade, in which high-voltage switches, transformers and low-voltage switches are pre installed in the substation. High voltage switchgear shall be selected according to the principle of small size, oil-free, good performance, high reliability, maintenance free or less maintenance, which can realize terminal or looped network operation. The power distribution transformer shall be energy-saving and environment-friendly (low loss and low noise) transformer with Dyn11 connection group, tap and 20kV power supply. The product has the advantages of high power supply reliability, reasonable structure, flexible installation, convenient operation, small size, low cost, etc. It is used in the system with high voltage of 20kV, especially in the current 20KV system, and can be directly used after the system is transformed to 20KV. It can be widely used in industrial and mining enterprises, airports, stations, residential areas, ports, highways, subways and other places in the urban network transformation.

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.

 XGN15-12/24/40.5 unit type air insulated ring main unit with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear.  It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc.,.  It can take self-produced FLS-12/24 load break switch; also according to user’s demand can be assembled with the internationally top-ranking brand LBS or VCB, Operational methods for the main switch inside ring main unit can be either manual or electric power driven. It can meet the requirement of “Four Controls” when matched with FTU and RTU. In accordance with the national standard GB3906 and international standardIEC298, protection degreeIP2X.

Adopting prefabricated live and touchable silicone rubber cable heads, fully sealed, fully insulated, maintenance free, and reliable to ensure personal safety: compact structure, small and beautiful appearance, stainless steel double layer box, with a service life of over 20 years; Without affecting the operation of the main network. Implement regional power outage maintenance and reduce the scope of power outages; It can be equipped with one or more SF6 load switches. Flexible and diverse wiring methods, with up to eight branch outlets; Optional lightning arrester, short circuit fault indicator, current limiting fuse, etc., to meet various user requirements.

The GGD low voltage electrical complete switchgear panel for substations is a high-quality product designed for efficient and reliable power distribution in various substation applications. As a seller, we take pride in offering this advanced switchgear panel that meets the highest industry standards and provides a comprehensive solution for low voltage electrical control and protection. Features Robust Construction: The GGD switchgear panel is built with a sturdy and durable framework to withstand the harshest working conditions. Its rigid structure ensures longevity and stable performance. Enhanced Safety: Safety is a top priority in any electrical system. The GGD switchgear panel is equipped with advanced protective features, such as fault indicators, overload protection, and short circuit protection to ensure the safety of both personnel and equipment. Flexible Component Configuration: The GGD switchgear panel offers versatile configuration options to suit specific substation requirements. It can accommodate various components, including circuit breakers, disconnectors, and transformers. This flexibility allows for easy customization and integration into existing systems. User-friendly Interface: The GGD switchgear panel features a user-friendly interface, making operation and maintenance hassle-free. Its intuitive design ensures ease of use, reducing the need for extensive training and minimizing downtime. Efficient Power Distribution: The GGD switchgear panel ensures efficient power distribution by effectively managing electrical loads and preventing power surges or fluctuations. This enhances the overall performance and reliability of the substation. Remote Monitoring and Control: With the GGD switchgear panel, users can remotely monitor and control the electrical system through advanced communication capabilities. This feature facilitates real-time status updates, alarm notifications, and allows for proactive maintenance, leading to improved system efficiency. Compliance with International Standards: The GGD switchgear panel adheres to international standards such as IEC IEC60439.1 and GB7251.1, ensuring compatibility and reliability with other electrical systems worldwide. This compliance further guarantees the performance and safety of the product. Applications The GGD low voltage electrical complete switchgear panel for substations is suitable for a wide range of applications, including power plants, oil and gas facilities, industrial complexes, commercial buildings, and renewable energy projects. Its versatility and reliability make it an ideal choice for any low voltage electrical distribution system. Conclusion As a trusted seller, we offer the GGD low voltage electrical complete switchgear panel for substations, a high-quality product that combines durability, safety, efficiency, and flexibility. With its advanced features and user-friendly interface, this switchgear panel ensures reliable power distribution in various applications. Choose the GGD switchgear panel for your substation needs, and experience the difference in performance and reliability.