Power Transmission Line Equipment mainly includes transmission lines, lightning/surge arresters,power transformers, circuit breakers, isolating switches/disconnector, insulators, ring main units/disconnector, drop out fuses, etc., used for the transmission and transformation of electrical energy. The transmission equipment produced by our company includes lightning/Surge arresters, power transformers, isolation/disconnector switches, insulators, ring main units/Switchgear, and drop out fuse Cutout. Power Transmission lines: Transmission lines are the core part of the transmission and distribution system, responsible for transporting the electrical energy generated by power plants to substations and user terminals. Transmission lines include two types: overhead lines and cable lines. Power Transformer: Transformer is a key equipment used for voltage conversion in power systems, which can convert high voltage electricity into a voltage suitable for transmission and reduce line losses. Circuit breaker: The function of a circuit breaker in a power system is to protect the circuit from the effects of current overload, short circuit, and faults. It can automatically disconnect the circuit in case of system failure, preventing the accident from escalating. Isolation switch/disconnector: The isolation/disconnector switch is used to isolate live parts and ensure the safety of workers. It does not have an arc extinguishing function and is mainly used for isolation operations during maintenance. Lightning/surge arrester is an electrical device used to protect electrical equipment from high transient overvoltage hazards. It is usually connected between the power grid conductor and the ground wire, and sometimes also connected next to the electrical winding or between the conductors, to release overvoltage energy and limit the freewheeling time and freewheeling amplitude. Drop out fuse Cutout: Drop out fuse cutout is a power protection device mainly used to prevent circuit overload or short circuit, in order to protect electrical equipment and personal safety. It is usually installed on branch lines and distribution transformers of 10kV distribution lines, with the function of isolating switches, which can reduce the range of power outages and create a safe working environment for maintenance sections and equipment. Insulator: A device installed between conductors of different potentials or between conductors and grounding components, mainly used for withstanding voltage and mechanical stress. Ring Main Unit/Switchgear is an electrical equipment consisting of a set of high-voltage switchgear installed in metal or non-metal insulated cabinets, mainly used in ring power supply systems. The core part adopts load switches and fuses, which have the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety.