What are the Types and Execution Standards of Cables?

In order to facilitate the selection and improve the applicability of products, China’s wire and cable products can be divided into the following five categories according to their use. The categories include bare wire, winding wire, power cable, communication cable, wire and cable for electrical equipment. Today mainly talk about the fine classification of medium voltage and high voltage cables, then what are the models of medium voltage cables and high voltage cables?

01 Standards for medium voltage cables and high voltage cables

 Medium voltage crosslinked polyethylene insulated power cable (voltage class: 6/6KV-26/35KV; Executive standard: GB/T12706.2-2008)

The medium pressure crosslinked polyB cable uses the all-dry chemical crosslinking method to change the linear molecular structure of polyethylene into a spatial network structure, so that the thermoplastic polyethylene is transformed into thermosetting crosslinked polyethylene, so that its mechanical properties, thermal aging properties and environmental stress ability are greatly improved, and has excellent electrical properties. It has the characteristics of high normal operating temperature, simple structure, small outside diameter, light weight, easy to use, not limited by laying drop and so on. Suitable for power frequency rated voltage 1-35KV distribution system.

High voltage crosslinked polyethylene insulated power cable (voltage class: 64/110KV, implementation standard: GB/T 11017-2014; 127/220KV, 290/500KV).

The components of a high-voltage cable from the inside to the outside include: conductor, insulation, inner protective layer, filler (armor), and external insulation. Of course, armored high-voltage cables are mainly used for ground burial, which can resist high-intensity oppression on the ground and prevent other external damage.

02 Medium and high voltage cable models

The main types of medium voltage cables are YJV cable, VV cable, YJLV cable, VLV cable.

YJV cable full name XLPE insulated PVC sheathed Power cable (copper core)

VV cable full name Polyvinyl chloride insulated polyvinyl chloride sheathed power cable (copper core)

YJLV cable full name crosslinked polyethylene insulated polyvinyl chloride sheathed aluminum core power cable

VLV cable full name PVC insulated PVC sheathed aluminum core power cable

03 Cross-linked cable model

YJVYJLV crosslinked polyethylene insulated polyvinyl chloride sheathed power cable

YJY, YJLY crosslinked polyethylene insulation polyethylene sheathed power cable

YJLW02, YJLLW02 crosslinked polyethylene insulation corrugated aluminum sheathed polyvinyl chloride sheathed power cable

YJLW03, YJLLW03 crosslinked polyethylene insulated corrugated aluminum sheathed polyethylene sheathed power cable

Cable structure: conductor – conductor shielding – insulation – insulation shielding – water blocking layer – metal shielding – metal sheath – asphalt layer – sheath layer – graphite layer

1.8kV and below are low-voltage cables; 3.6KV~35KV is medium voltage cable; 35KV~110KV high voltage cable; 110~220KV is UHV cable and wire. Various specifications and models of wire and cable are still more difficult to understand. Because there are many kinds, I hope to give you a rough understanding and understanding of these today.