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![Should power cable···]()
2025-09-01 Should power cables with 3+2···1. Cables over 300 meters.2. For large cross-sections, use a tile-shaped cable.3. For example, a VV cable with a 3*300+2*150 diameter typically uses a 3 large tile + 1 small tile + 1 round cable. This configuration offers advantages such as a stable and compact structure and minimizes material waste
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![What is aluminum a···]()
2025-09-01 What is aluminum alloy cable···Aluminum alloy cables are an emerging material for power cables, using aluminum alloy as the conductor and utilizing advanced technologies such as special compression and annealing. Aluminum alloy cables address the shortcomings of aluminum core cables, significantly improving their bending and cree
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![What structure doe···]()
2025-09-01 What structure does the cond···What conductor structures are commonly used in power cables?Common conductor structures for power cables include solid conductors, stranded round conductors, stranded compressed round conductors, and stranded shaped conductors.The following principles are generally followed when selecting conductor
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![What is the functi···]()
2025-09-01 What is the function of the ···What is the function of the metal tape shield in power cables?The metal tape shield in power cables is typically made of copper tape wrapped around the outer semi-conductive layer. Its functions are as follows:1) It strengthens the electric field confinement within the insulation layer, aligning the
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![What is the functi···]()
2025-09-01 What is the function of cabl···What is the function of a cable sheath?The cable sheath is one of the three main components of a cable. Its primary function is to protect the internal structure from mechanical damage and various environmental factors (such as water, sunlight, biological damage, and fire) during installation and op
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![What is the functi···]()
2025-09-01 What is the function of the ···What is the function of the neutral conductor in a low-voltage four-core cable?In four-core cables used in low-voltage power grids, the neutral conductor is a conductor other than the three-phase conductors. Its function is to pass the unbalanced current of the three-phase AC power. A three-core cab
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![What is a flame re···]()
2025-09-01 What is a flame retardant ca···What is a flame-retardant cable? Is a fire-resistant cable fire-proof?The flame retardancy and fire resistance of power cables are two completely different concepts. Flame-retardant cable refers to a cable specimen that, under specified test conditions, maintains flame spread within a specified rang
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![Why can't single-c···]()
2025-09-01 Why can't single-core cables···Why can't single-core cables be armored with steel tape?A magnetic field exists around a current-carrying conductor, and the strength of the magnetic lines of force is proportional to the current flowing through it. Because steel tape is a magnetic material with high magnetic permeability, when
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![What is the basic ···]()
2025-09-01 What is the basic definition···What is the basic definition of power cable?Power cable refers to cables used to transmit and distribute high-power electrical energy in the main lines of a power system. These cables include power cables with various voltage levels and insulation, ranging from 1 to 500 kV and above.The term "p
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![What is the differ···]()
2025-09-01 What is the difference betwe···What is the difference between DC cables and AC cables?1) They are used in different systems. DC cables are used in rectified DC transmission systems, while AC cables are commonly used in industrial frequency (50 Hz in China) power systems.2) Compared to AC cables, DC cables offer higher transmissio
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