China Metal switchgear RMU Manufacturers, Suppliers, Factory

LMZK Series Current Transformer is a compact and lightweight device known for its small size, easy installation, and convenient functionality. It is widely used in compact fully insulated ring main units and is highly compatible with remote terminal devices like RTUs and FTUs, providing essential data support for the entire system. The installation process is simple and efficient, as it can be directly attached to the connected input and output cables. This current transformer has found extensive applications in various models of compact fully insulated ring main units, including SafeRing/Plus, Uniswitch, RM6/SM6, SVS, GA/GE, FB, and SS. Additionally, it is also suitable for use in combination substations and cable junction boxes. The LMZK Series Current Transformer utilizes high-quality imported silicon steel sheets with high magnetic permeability as its magnetic core material. This unique choice ensures that the core can be divided and offers minimal magnetic flux loss. The half-ring-shaped core and secondary winding are encapsulated in high-quality epoxy resin under vacuum in a flame-retardant plastic casing. This design not only guarantees moisture resistance but also provides stable and maintenance-free performance. During installation, the two half-ring cores are securely clamped onto the phase-separated cables using durable stainless steel brackets. This integration with the cables creates a harmonious and aesthetically pleasing appearance. The LMZK Series Current Transformer is compatible with 10KV cables ranging from 35mm2 to 400mm2, and the stainless steel brackets are resistance-free and ensure a reliable and robust connection. In summary, the LMZK Series Current Transformer stands out due to its compact size, lightweight nature, easy installation, and compatibility with various remote terminal devices. Its high-quality materials and superior design contribute to its exceptional performance in fully insulated ring main units, combination substations, and cable junction boxes.

The ZW20-12 outdoor column intelligent vacuum electrical circuit breaker is a cutting-edge product designed to meet the demands of modern power distribution systems. With its reliable fault detection, protection control, and communication capabilities, this circuit breaker ensures the efficient and safe operation of power networks. Equipped with advanced features, such as precise detection of milliamp-level zero-sequence current and phase-to-phase short-circuit fault currents within and outside the range, it provides automatic disconnection for single-phase ground faults and phase-to-phase short-circuits. Key Features: Fault Detection Function: The ZW20-12 circuit breaker is equipped with a fault detection function, which allows for the reliable identification and diagnosis of faults in the power distribution system. This feature enables prompt action to be taken to restore power and minimize downtime. Protection Control Function: The circuit breaker incorporates a comprehensive protection control function, which ensures the safety and integrity of the power distribution network. It effectively responds to abnormal conditions, such as overcurrent, overvoltage, and short-circuit faults, protecting the network from damage and preventing potential hazards. Communication Function: With its communication capabilities, the ZW20-12 circuit breaker enables seamless integration into the power distribution automation system. It supports various communication protocols, facilitating real-time monitoring, data collection, and control of the circuit breaker's operation. This function enhances the efficiency and reliability of the power distribution system. Milliamp-Level Zero-Sequence Current Detection: The circuit breaker is capable of accurately detecting milliamp-level zero-sequence currents, both within and outside the specified range. This feature allows for the identification and isolation of single-phase ground faults, ensuring continuous power supply and preventing further damage to the system. Phase-to-Phase Short-Circuit Fault Current Detection: The ZW20-12 circuit breaker efficiently detects phase-to-phase short-circuit fault currents, providing immediate disconnection to isolate the fault and protect the power distribution system. The rapid response and precise detection capability minimize the impact of short-circuit faults on the network. In conclusion, the ZW20-12 outdoor column intelligent vacuum electrical circuit breaker incorporates advanced functionalities, including fault detection, protection control, and communication capabilities. With its precise detection of milliamp-level zero-sequence currents and phase-to-phase short-circuit fault currents, it enables automatic disconnection of single-phase ground faults and phase-to-phase short circuits. This circuit breaker ensures the safety, reliability, and efficient operation of power distribution systems, contributing to uninterrupted power supply and minimizing downtime in the event of faults.

The JSZV18-10R is a dry type resin potential transformer designed for use in inflatable ring main units. It features a fully enclosed structure with epoxy resin casting, providing excellent insulation and protection. This product meets the standards of GB20840.3 and IEC60044-2, ensuring reliable performance and compatibility. It is rated for insulation levels of 12/42/75KV and operates at a frequency of 50HZ. Developed and manufactured by Zhejiang Rongzhi Electric Co., Ltd., the company specializes in the research, production, and sales of current transformers, voltage transformers, fault indicators, and dehumidifiers for switchgear. One of the key features of this product is its built-in protection device for prevention of abnormal overvoltage on the secondary side of various current transformers (CT). The compact size of the protection device saves space. Additionally, the protection device requires no maintenance and is easy to install and operate. It can be directly connected to the secondary winding terminals of the current transformer, and the lead wires do not require specific polarity. The JSZV18-10R dry type resin potential transformer is an ideal solution for applications requiring reliable voltage sensing and protection in inflatable ring main units. It offers superior performance, convenience, and space-saving advantages.

The ZN63A-12 (VS1) indoor high-voltage vacuum circuit breaker is a highly efficient and reliable switching device designed for use in three-phase AC 50Hz rated voltage 12kV power systems. This circuit breaker is specifically engineered to provide protection for power grid equipment and power equipment used in industrial and mining enterprises, as well as for effective control unit operation. One of the key features of the ZN63A-12 (VS1) circuit breaker is its ability to handle frequent operation under rated operating current or multiple short-circuit current interruptions. This makes it well-suited for applications where robust and continuous performance is required. Whether used in power grid facilities or in industrial settings, this circuit breaker ensures optimal safety and protection. The integrated design of the operating mechanism and the circuit breaker body sets the ZN63A-12 (VS1) apart from other circuit breakers on the market. This innovative design not only enhances the overall efficiency of the circuit breaker, but also makes it incredibly versatile. The ZN63A-12 (VS1) can be used as a fixed installation unit, or it can be equipped with a special propulsion mechanism to form a highly portable and flexible handcart unit. With its user-friendly design, the ZN63A-12 (VS1) circuit breaker is easy to operate and maintain. Its high-voltage vacuum technology ensures superior performance and reliability, while minimizing the risk of malfunctions or breakdowns. This allows for uninterrupted operation and provides peace of mind to users. Safety is a top priority when it comes to electrical equipment, and the ZN63A-12 (VS1) circuit breaker has been designed with this in mind. It meets all necessary safety standards and regulations, offering maximum protection for both equipment and personnel. Its robust construction and durable materials make it resistant to various environmental conditions, ensuring its longevity and dependability. In addition to its outstanding performance and safety features, the ZN63A-12 (VS1) circuit breaker also boasts energy efficiency. It is designed to optimize power consumption, effectively reducing energy waste and lowering operational costs. This makes it not only a reliable and durable solution, but also an environmentally friendly one. Installation and maintenance of the ZN63A-12 (VS1) circuit breaker are hassle-free, thanks to its modular design. This allows for easy access to individual components, simplifying maintenance procedures and minimizing downtime. With a well-thought-out design, this circuit breaker ensures smooth installation and efficient operation. In conclusion, the ZN63A-12 (VS1) indoor high-voltage vacuum circuit breaker is a versatile, efficient, and reliable switching device that offers maximum protection for power grid equipment and power equipment in industrial and mining enterprises. Its integrated design, user-friendly operation, and energy efficiency make it an ideal choice for applications requiring frequent operation under rated operating current or multiple short-circuit current interruptions. With its superior performance, safety features, and low maintenance requirements, the ZN63A-12 (VS1) provides a long-lasting and cost-effective solution for various electrical systems.

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.

Rongzhi Electric Power is a large-scale high voltage automatic reactive power compensation complete device manufacturer and supplier in China. We have been specialized in High voltage equipment for many years. Our products have a good price advantage and cover most of the South America, Middle East, Africa, Southeast Asia markets. We look forward to becoming your long-term partner in China.