Power transmission systems rely on high-capacity, low-loss wires and cables to achieve efficient transmission of electrical energy from power stations to end-users. These wires and cables are required to possess high conductivity, insulation properties, and weather resistance. They must withstand various harsh climatic conditions and external interference to ensure the stable operation of the power grid, providing a reliable power supply for economic and social development.

Wires and cables play a crucial role in the field of power transmission, serving as the vital link between power stations, substations, and end-users, ensuring that electrical energy is delivered efficiently and safely to every corner. Below are the primary applications of wires and cables in the realm of power transmission:

Transmission Lines: High-voltage transmission lines typically employ overhead or underground cables to transport electrical energy from power plants to distant substations. These cables are capable of withstanding high voltages, thereby reducing energy loss during transmission.

Distribution Networks: After high-voltage electricity is converted to low-voltage at substations, distribution networks utilize wires and cables to allocate electrical power to industrial, commercial, and residential users. These cables are usually installed beneath city streets or within buildings.

Submarine Cables: Used for power transmission between islands and mainlands or across national borders, submarine cables can withstand harsh marine environments, ensuring a stable supply of electrical energy.

Direct Current Transmission: For long-distance or submarine power transmission, direct current cables are favored due to their lower transmission losses. They are commonly used to interconnect grids of different countries or to supply power to remote areas.

Superconducting Cables: At extremely low temperatures, superconducting cables can transmit electricity without loss. Although currently costly and requiring complex cooling systems, they represent an important direction for future power transmission technologies.

Flexible Transmission Systems: Utilizing special flexible cables, these systems can rapidly deploy power supply in scenarios requiring frequent movement or temporary power, such as large-scale events, construction sites, or emergency rescues.

Smart Grids: With the development of smart grids, wires, and cables not only transmit electrical energy but also carry data transmission functions, enabling real-time monitoring and management of the grid, thereby enhancing its reliability and efficiency.

The design and manufacture of wires and cables must adhere to stringent standards and specifications to ensure their performance and safety under various environmental conditions. With advancements in materials science and technology, future wires and cables will become more efficient, environmentally friendly, and intelligent.

The shipbuilding industry has equally stringent demands for wires and cables. Onboard, wires and cables are responsible for power distribution, signal transmission, and control system operations, making them critical for the safe navigation and efficient operation of vessels. They must withstand harsh environments such as seawater corrosion, vibration, and high temperatures, while also possessing high flame-retardant properties to ensure the safe and stable operation of ships under various conditions.

Wires and cables play a vital role in the shipbuilding sector, as the power, communication, control, and safety systems of ships all rely on their support. Below are the main applications of wires and cables in shipbuilding:

1. Power Transmission and Distribution

• Main Power System: The main power system of a ship depends on high-capacity cables to transmit electricity generated by the generators to various distribution panels, which then allocate power to the ship's electrical equipment.

• Distribution Network: Low-voltage cables, such as lighting, sockets, ventilation systems, and pumps, are used for internal power distribution on ships.

2. Propulsion System

• Electric Propulsion Ships: In modern electric propulsion ships, high-voltage cables are used to connect generators, frequency converters, and propulsion motors, ensuring the efficient operation of the propulsion system.

• Hybrid Ships: In hybrid ships, cables are used to connect traditional power systems and electric propulsion systems, enabling flexible power switching.

3. Communication and Navigation Systems

• Communication Cables: Used for internal and external communication systems on ships, such as radios, satellite communications, and internal telephone systems.

• Navigation Systems: Cables connect navigation equipment like radar, GPS, and sonar to ensure safe navigation.

4. Control Systems

• Automation Systems: Cables connect various sensors, controllers, and actuators to achieve automated control of ship systems, such as engine room automation and cargo handling systems.

• Monitoring Systems: Cables connect monitoring cameras, fire alarm systems, and gas detection systems to ensure the safe operation of the ship.

5. Safety Systems

• Emergency Power Systems: Fire-resistant cables are used to connect emergency generators and critical equipment like emergency lighting and fire pumps, ensuring uninterrupted power supply during emergencies.

• Fire Alarm Systems: Flame-retardant cables connect fire detectors and alarm systems to ensure timely alerts and responses in case of fire.

6. Special Environmental Applications

• Corrosion-Resistant Cables: Used in damp and salty environments on ships to ensure cables function properly under harsh conditions.

• High-Temperature Cables: Used in high-temperature environments such as engine rooms to ensure stable performance.

7. Special Requirements for Marine Cables

• Waterproof Performance: Marine cables need waterproof properties to cope with the humid environment during ship operation.

• Vibration Resistance: Ships generate vibrations during navigation, so cables must have good vibration resistance to prevent damage.

• Flame-Retardant Properties: Marine cables typically require flame-retardant properties to reduce fire risks.

8. Future Development Trends

• Smart Ships: With the development of smart ships, cables will not only transmit power and signals but also support data transmission for intelligent ship management.

• Green Ships: In green ships, cables need to support new energy systems, such as solar and wind power, to achieve energy savings and emission reductions.

Wires and cables are widely and critically used in shipbuilding, and their performance and quality directly impact the safety, reliability, and operational efficiency of ships. Therefore, the selection and installation of wires and cables in shipbuilding are subject to strict requirements and standards.

Wires and cables are widely used in the petrochemical industry, which imposes extremely high-performance requirements due to the typical conditions of high temperature, high pressure, flammability, explosiveness, and strong corrosiveness. Below are the main applications of wires and cables in the petrochemical field:

1. Power Transmission and Distribution

• Main Power System: Used to transmit electricity from power generation equipment or external grids to various parts of petrochemical facilities, such as reactors, compressors, and pumps.

• Distribution Network: Low-voltage cables are used for internal power distribution within plants, supplying power to lighting, control systems, instruments, and other equipment.

2. Explosion-Proof and Safety Systems

• Explosion-Proof Cables: Used in flammable and explosive environments (e.g., refineries and chemical plants) to connect explosion-proof electrical equipment, ensuring no sparks or explosions occur in hazardous areas.

• Fire Alarm Systems: Flame-retardant and fire-resistant cables are used to connect fire detectors, alarms, and firefighting equipment, ensuring timely alerts and activation of fire suppression systems in case of fire.

3. Automation and Control Systems

• Instrumentation Cables: Used to connect sensors, controllers, and actuators, enabling automated control of petrochemical production processes, such as monitoring and regulating temperature, pressure, and flow.

• Control Cables: Used to transmit control signals, ensuring precise operation of production equipment.

4. Communication and Data Transmission

• Communication Cables: Used for internal telephone systems, intercoms, and data transmission networks within plants, ensuring smooth production scheduling and management.

• Fiber Optic Cables: Used in scenarios requiring high-speed data transmission and electromagnetic interference resistance, such as transmitting monitoring data and production information.

5. Special Environmental Applications

• High-Temperature Cables: Used in high-temperature environments, such as refining units and cracking furnaces, ensuring stable cable performance under heat.

• Corrosion-Resistant Cables: Used in corrosive environments, such as acid and alkali areas in chemical plants, with outer materials designed to resist chemical corrosion.

• Waterproof Cables: Used in damp or underwater environments, such as offshore oil platforms or wastewater treatment areas in chemical plants.

6. Emergency Power Systems

• Fire-Resistant Cables: Used to connect emergency generators and critical equipment (e.g., emergency lighting and fire pumps), ensuring uninterrupted power supply during fires or other emergencies.

7. Oil Extraction and Transportation

• Offshore Oil Platforms: Cables are used to connect power generation equipment, drilling equipment, and pump systems on platforms, requiring waterproof, salt-resistant, and vibration-resistant properties.

• Oil Pipelines: Cables are used for heating systems (e.g., heat tracing cables) and monitoring systems in oil pipelines, ensuring normal operation in low-temperature environments.

8. Future Development Trends

• Smart Factories: As the petrochemical industry moves toward smart manufacturing, cables will not only transmit power and signals but also support big data transmission for intelligent production management.

• Green and Eco-Friendly: Eco-friendly cables (e.g., low-smoke zero-halogen cables) will see increasing use in the petrochemical field to reduce toxic gas emissions during fires.

9. Special Requirements

• High Reliability: Petrochemical production demands extremely high cable reliability, as any failure could to serious accidents or production interruptions.

• Long Lifespan: Cables need to have a long lifespan to reduce replacement frequency and maintenance costs.

• Interference Resistance: In environments with strong electromagnetic interference, cables must have shielding properties to ensure accurate signal transmission.

The application of wires and cables in the petrochemical field is crucial, as their performance and quality directly impact production safety, stability, and efficiency. Therefore, the petrochemical industry has strict standards and regulations for the selection, installation, and maintenance of wires and cables.

Wires and cables play a crucial role in the rail transit sector, providing essential support for train operation, signal transmission, power supply, and safety assurance. Rail transit systems impose extremely high-performance requirements on wires and cables due to their complex operating environments, which involve high speeds, heavy loads, vibrations, temperature fluctuations, and other challenges. Below are the main applications of wires and cables in the rail transit field:

1. Power Transmission and Distribution

• Traction Power Supply System: High-voltage cables are used to transmit electricity from substations to overhead lines or third rails, providing traction power for trains.

• Distribution Network: Low-voltage cables are used for power distribution within rail transit stations and vehicles, supplying power to lighting, ventilation, air conditioning, elevators, and other equipment.

2. Train Power System

• Traction Motor Cables: Used to connect traction motors and inverters, transmitting high-power electricity to ensure the train's power output.

• Auxiliary Power Cables: Provide power for auxiliary equipment on trains, such as lighting, air conditioning, and control systems.

3. Signal and Communication Systems

• Signal Transmission Cables: Used to connect trackside signal equipment and train control systems, ensuring the safety and accuracy of train operations.

• Communication Cables: Used for communication between trains and dispatch centers, as well as internal train systems like broadcasting and intercoms.

• Fiber Optic Cables: Used in scenarios requiring high-speed data transmission and electromagnetic interference resistance, such as transmitting monitoring data, passenger information, and operational scheduling information.

4. Control Systems

• Control Cables: Used to connect various sensors, controllers, and actuators on trains, enabling automated control of systems like braking, door control, and speed regulation.

• Monitoring System Cables: Used to connect monitoring cameras, fire alarm systems, and environmental monitoring systems, ensuring the safety and comfort of train operations.

5. Safety Systems

• Fire Alarm Systems: Flame-retardant and fire-resistant cables are used to connect fire detectors, alarms, and firefighting equipment, ensuring timely alerts and activation of fire suppression systems in case of fire.

• Emergency Power Systems: Fire-resistant cables are used to connect emergency generators and critical equipment (e.g., emergency lighting and ventilation systems), ensuring uninterrupted power supply during emergencies.

6. Rail Infrastructure

• Track Circuit Cables: Used in track circuit systems to detect train positions and track occupancy, ensuring safe intervals between trains.

• Catenary Cables: Used in electrified railway catenary systems to transmit power to trains.

7. Special Environmental Applications

• High-Temperature Cables: Used in train engine compartments or high-temperature areas, ensuring stable cable performance under heat.

• Low-Temperature Cables: Used in cold regions, ensuring cables maintain flexibility and electrical performance in low-temperature environments.

• Vibration-Resistant Cables: Used in trains and along tracks, capable of withstanding vibrations and shocks during train operations.

8. Future Development Trends

• Smart Rail Transit: With the development of smart technologies, cables will not only transmit power and signals but also support big data transmission for intelligent train management and operations.

• Green Rail Transit: Eco-friendly cables (e.g., low-smoke zero-halogen cables) will see increasing use in rail transit to reduce toxic gas emissions during fires.

• High-Speed Rail: The development of high-speed rail imposes higher requirements on cables for high-temperature resistance, vibration resistance, and electromagnetic interference resistance.

9. Special Requirements

• High Reliability: Rail transit systems demand extremely high cable reliability, as any failure could to severe operational disruptions or safety incidents.

• Long Lifespan: Cables need to have a long lifespan to reduce replacement frequency and maintenance costs.

• Interference Resistance: In environments with strong electromagnetic interference, cables must have shielding properties to ensure accurate signal transmission.

The application of wires and cables in the rail transit field is critical, as their performance and quality directly impact the safety, stability, and efficiency of train operations. Therefore, the rail transit industry has strict standards and regulations for the selection, installation, and maintenance of wires and cables.

Wires and cables are indispensable infrastructure in the construction engineering field, providing essential support for power supply, lighting, communication, and safety systems in buildings. The performance requirements for wires and cables in construction engineering are high due to their complex application environments, which involve challenges such as fire resistance, waterproofing, corrosion resistance, and anti-aging. Below are the main applications of wires and cables in the construction engineering field:

1. Power Transmission and Distribution

• Main Power System: High-voltage cables are used to transmit electricity from external power grids to the distribution rooms of buildings, and then distribute it to various floors and electrical equipment.

• Distribution Network: Low-voltage cables are used for internal power distribution within buildings, supplying power to lighting, sockets, air conditioning, elevators, and other equipment.

2. Lighting Systems

• Lighting Cables: Used to connect lighting equipment within buildings, such as lamps, emergency lighting, and landscape lighting.

• Smart Lighting Systems: Low-smoke zero-halogen (LSZH) or flame-retardant cables are used in smart lighting control systems, supporting functions like dimming, timing, and remote control.

3. Communication and Network Systems

• Communication Cables: Used for internal telephone systems, network systems, and intercom systems within buildings, ensuring smooth communication.

• Fiber Optic Cables: Used in scenarios requiring high-speed data transmission, such as broadband networks, monitoring systems, and smart building management systems.

4. Safety Systems

• Fire Alarm Systems: Flame-retardant and fire-resistant cables are used to connect fire detectors, alarms, and firefighting equipment, ensuring timely alerts and activation of fire suppression systems in case of fire.

• Monitoring Systems: Cables are used to connect monitoring cameras, access control systems, and burglar alarm systems, ensuring building security.

• Emergency Power Systems: Fire-resistant cables are used to connect emergency generators and critical equipment (e.g., emergency lighting and fire pumps), ensuring uninterrupted power supply during emergencies.

5. Smart Systems

• Building Automation Systems: Control cables are used to connect sensors, controllers, and actuators, enabling automated control of systems like air conditioning, ventilation, lighting, and elevators for intelligent building management.

• Smart Home Systems: LSZH or flame-retardant cables are used in smart home systems, supporting remote control, scene modes, and energy management functions.

6. Special Environmental Applications

• High-Temperature Cables: Used in high-temperature environments, such as kitchens and boiler rooms, ensuring stable cable performance under heat.

• Corrosion-Resistant Cables: Used in damp or corrosive environments, such as basements and wastewater treatment areas, with outer materials designed to resist chemical corrosion.

• Waterproof Cables: Used in damp or underwater environments, such as swimming pools and fountains, ensuring proper cable operation in wet conditions.

7. Green Buildings

• Eco-Friendly Cables: LSZH cables are increasingly used in green buildings to reduce toxic gas emissions during fires.

• New Energy Systems: Cables are used to connect solar power systems, wind power systems, and other renewable energy sources, supporting green energy supply for buildings.

8. Future Development Trends

• Smart Buildings: With the development of IoT and smart technologies, cables will not only transmit power and signals but also support big data transmission for intelligent building management.

• Energy Efficiency and Environmental Protection: Eco-friendly and energy-efficient cables will see increasing use in construction engineering to support green buildings and sustainable development.

9. Special Requirements

• High Reliability: Construction engineering demands extremely high cable reliability, as any failure could to serious consequences.

• Long Lifespan: Cables need to have a long lifespan to reduce replacement frequency and maintenance costs.

• Interference Resistance: In environments with strong electromagnetic interference, cables must have shielding properties to ensure accurate signal transmission.

The application of wires and cables in the construction engineering field is critical, as their performance and quality directly impact the safety, comfort, and energy efficiency of buildings. Therefore, the construction engineering industry has strict standards and regulations for the selection, installation, and maintenance of wires and cables.

Wires and cables play a crucial role in the new energy sector. With the growing global demand for renewable energy, their applications in solar power, wind power, energy storage systems, and electric vehicle charging infrastructure are becoming increasingly widespread. The new energy field imposes extremely high-performance requirements on wires and cables, as they need to operate stably under complex environmental conditions while meeting demands for efficiency, safety, and environmental protection. Below are the main applications of wires and cables in the new energy sector:

1. Solar Power Systems

• Photovoltaic Cables: Used to connect solar panels, inverters, and distribution systems, transmitting electricity generated by solar power. Photovoltaic cables require UV resistance, high-temperature resistance, and corrosion resistance to withstand harsh outdoor environments.

• DC Cables: Used for series and parallel connections between solar panels, transmitting direct current (DC) electricity.

• AC Cables: Used to transmit alternating current (AC) electricity from inverters to the grid or electrical equipment.

2. Wind Power Systems

• Internal Wind Turbine Cables: Used to connect generators, transformers, and control systems inside wind turbines, transmitting power and signals. These cables require vibration resistance, torsion resistance, and low-temperature resistance to adapt to the complex operating environment of wind turbines.

• Tower Cables: Used to connect equipment at the bottom and top of wind turbine towers, transmitting power and signals.

• Submarine Cables: Used for power transmission in offshore wind farms, transmitting electricity generated by offshore turbines to onshore grids. Submarine cables require waterproofing, corrosion resistance, and high tensile strength.

3. Energy Storage Systems

• Battery Connection Cables: Used to connect energy storage battery packs, battery management systems (BMS), and inverters, transmitting electricity. These cables require high conductivity, high-temperature resistance, and flame-retardant properties.

• DC Cables: Used for internal DC power transmission in energy storage systems.

• AC Cables: Used to transmit AC power from energy storage systems to the grid or electrical equipment.

4. Electric Vehicle Charging Infrastructure

• Charging Pile Cables: Used to connect charging piles and electric vehicles, transmitting electricity. Charging pile cables require high flexibility, wear resistance, and oil resistance to withstand frequent use and outdoor environments.

• DC Fast Charging Cables: Used for DC fast charging piles, transmitting high-power electricity to support rapid charging of electric vehicles.

• AC Charging Cables: Used for AC charging piles, transmitting lower-power electricity, suitable for slow charging at homes and public places.

5. Smart Grids

• Data Transmission Cables: Used for communication and data transmission in smart grids, supporting real-time monitoring and management of the grid.

• Fiber Optic Cables: Used in scenarios requiring high-speed data transmission and electromagnetic interference resistance, such as transmitting monitoring data and control signals.

• Power Cables: Used for power transmission and distribution in smart grids, supporting efficient integration and dispatch of renewable energy.

6. Hydrogen Energy Systems

• Electrolyzer Cables: Used to connect electrolyzers and power sources, transmitting electricity required for water electrolysis to produce hydrogen.

• Fuel Cell Cables: Used to connect fuel cells and electrical equipment, transmitting electricity generated by fuel cells.

7. Special Environmental Applications

• High-Temperature Cables: Used in high-temperature environments, such as solar thermal systems in solar power plants or battery compartments in energy storage systems.

• Low-Temperature Cables: Used in cold regions, such as wind farms or high-altitude solar power stations.

• Waterproof Cables: Used in damp or underwater environments, such as offshore wind farms or hydropower stations.

8. Future Development Trends

• Efficient Transmission: With advancements in new energy technologies, the demand for high-efficiency cables is increasing, making low-loss cables the mainstream.

• Intelligent Management: Cables will not only transmit power and signals but also support data transmission for intelligent management of new energy systems.

• Green and Eco-Friendly: Eco-friendly cables (e.g., low-smoke zero-halogen cables) will see increasing use in the new energy sector to reduce environmental impact.

9. Special Requirements

• High Reliability: New energy systems demand extremely high cable reliability, as any failure could to system downtime or reduced efficiency.

• Long Lifespan: Cables need to have a long lifespan to reduce replacement frequency and maintenance costs.

• Interference Resistance: In environments with strong electromagnetic interference, cables must have shielding properties to ensure accurate signal transmission.

The application of wires and cables in the new energy sector is critical, as their performance and quality directly impact the efficiency, safety, and reliability of new energy systems. Therefore, the new energy industry has strict standards and regulations for the selection, installation, and maintenance of wires and cables.