Basic Knowledge of High-Voltage Cables-Qingdao Yilai Cable Co., Ltd.,

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Basic Knowledge of High-Voltage Cables

Release date:

2021-12-07

Among the many types of power cables, there is one capable of transmitting electricity between 10kV and 35kV—this is the high-voltage cable, which plays a pivotal role as the backbone of power transmission systems. Now, let’s take a look at the different types of high-voltage cables together.

Types of High-Voltage Cables

The main types of high-voltage cables include YJV cables, VV cables, YJLV cables, and VLV cables.

YJV cable, fully known as Cross-linked Polyethylene Insulated Polyvinyl Chloride Sheathed Power Cable (Copper Core)

VV cable, formally known as Polyvinyl Chloride Insulated Polyvinyl Chloride Sheathed Power Cable (Copper Core)

YJLV cable, fully known as Cross-linked Polyethylene Insulated Polyvinyl Chloride Sheathed Aluminum-Core Power Cable

VLV cable, fully known as Polyvinyl Chloride Insulated Polyvinyl Chloride Sheathed Aluminum-Core Power Cable

Due to the outstanding conductivity of copper conductors, an increasing number of projects are adopting copper-core power cables as the backbone of their power distribution systems, while aluminum-core power cables are used less frequently—especially in higher-voltage power systems, where copper-core cables are increasingly preferred.

The Structure of High-Voltage Cables

The components of a high-voltage cable, from the inside out, include: conductor, insulation, inner sheath, filler (armoring), and outer insulation. Of course, armored high-voltage cables are primarily used for underground installations, offering robust resistance to intense surface compression while also protecting against damage caused by external forces.

Commonly used high-voltage cable specifications, models, and applications

NA-YJV, NB-YJV, cross-linked polyethylene-insulated PVC-sheathed Class A(B) fire-resistant power cables can be installed in indoor environments, tunnels, and pipelines where fire resistance is required.

NA-YJV22, NB-YJV22: Cross-linked polyethylene-insulated steel-tape armored PVC-sheathed Class A(B) fire-resistant power cables are suitable for direct burial installations where fire resistance is required, but are not appropriate for installation inside conduits.

NA-VV, NB-VV: Polyvinyl chloride-insulated, polyvinyl chloride-sheathed Class A(B) fire-resistant power cables can be installed in indoor environments, tunnels, and pipelines where fire resistance is required.

NA-VV22, NB-VV22, Polyvinyl Chloride Insulated Steel Tape Armored Polyvinyl Chloride Sheathed Class A(B) Fire-Resistant Power Cable

Ultra-high-voltage cables are a type of power cable that have emerged alongside the continuous advancement of cable technology. Typically serving as a crucial link in large-scale transmission systems, these cables are highly sophisticated high-voltage cables designed primarily for long-distance electricity transmission.

The editor would like to remind everyone that although high-voltage cables offer numerous benefits, it's crucial to prioritize electrical safety and, whenever possible, choose reliable cable manufacturers for your purchases.