Types and application occasions of common cables_Anhui Honglin Instrument Cable Co., Ltd.

Types and application occasions of common cables

Author：hlyb Add Time：2016-07-27 08:58:59

VV: PVC insulated, PVC sheathed power cable

YJV: XLPE insulated, PVC sheathed power cable

It can be laid indoors, in tunnels and pipelines, and can withstand certain laying traction, but the cable can not bear external force. Single core cable is not allowed to be laid in magnetic material pipelines. If it is necessary to bear the action of external mechanical force, steel tape armor shall be wound.

Zr － VV: flame retardant PVC insulated, PVC sheathed power cable

Features: in case of open fire combustion, remove the fire source and automatically extinguish within 12s.

Zr － YJV: flame retardant cross-linked polyethylene insulated, polyethylene chloride sheathed power cable

Features: in case of open fire combustion, remove the fire source and automatically extinguish within 12s.

NH － VV: fire resistant PVC insulated, PVC sheathed power cable

It can be laid indoors, in tunnels, cable trenches, pipelines, flammable and severely corrosive places, but it can not bear external mechanical forces. If it is necessary to bear the action of external mechanical force, steel tape armor shall be wound. It is suitable for occasions with special requirements, such as large capacity power plants, nuclear power plants, underground railways, high-rise buildings, etc.

Features: in the burning environment, protect the normal operation for 90min (min).

NH － YJV: fire resistant cross-linked polyethylene insulated, PVC sheathed power cable

It is suitable for occasions with special requirements, such as large capacity power plants, nuclear power plants, underground railways, high-rise buildings, etc.

Features: keep normal operation for 90min in the burning environment.

2、 Brief introduction of power cable model and performance

Abstract: due to the wide variety of special-purpose cables, a brief introduction is made here. For fluoroplastic cables used in high temperature environment, the continuous working temperature of polyvinylidene fluoride insulated and sheathed cables is 150 ℃, the continuous working temperature of polyperfluoroethylene propylene insulated and sheathed cables is 100 ℃, and the continuous working temperature of polytetrafluoroethylene insulated and sheathed cables is 260 ℃

1、 Model

1. Material of sheath and insulating layer.

Common types:

Vv (VLV) PVC insulated PVC sheathed power cable

Vy (Vly) PVC insulated polyethylene sheathed power cable

YJV (yjlv) XLPE insulated PVC sheathed power cable

Yjy (yjly) cross linked polyethylene insulated polyethylene sheathed power cable

L in brackets represents aluminum core cable

Pin 22 represents steel tape armored edge PVC sheath

Pin 23 represents the steel tape armored edge PVC sheath

Pin 32 represents PVC sheath with thin steel wire armored edge

Pin 33 represents a thin steel wire edge PVC sheath

Pin 42 represents thick steel wire armored edge PVC sheath

Pin 43 stands for thick steel wire edge polychloroprene sheath

Vv (VLV) cable conductor operation * * * high rated temperature is 70 ° C, short circuit (duration less than 5 seconds) * * * high temperature does not exceed 160 ° C.

YJV (yjlv) cable conductor operation * * * high rated temperature is 90 ℃, in case of short circuit (duration less than 5 seconds) * * * high temperature does not exceed 250 ℃.

Mineral insulated cable. Magnesium oxide insulation, copper or superalloy sheath, operation * * * high rated temperature 250 ℃. Special purpose type:

Due to the wide variety of cables for special purposes, a brief introduction is made here * * *. For fluoroplastic cables used in high temperature environment, the continuous working temperature of polyvinylidene fluoride insulated and sheathed cables is 150 ℃, the continuous working temperature of polyperfluoroethylene propylene insulated and sheathed cables is 100 ℃, and the continuous working temperature of polytetrafluoroethylene insulated and sheathed cables is 260 ℃. It is used for butyrone composite insulated cable in oil polluted environment, with high rated temperature of 105 ℃. Silicone rubber cable for frequent mobile environment, running * * * high rated temperature 180 ℃. In addition, there are special low temperature, waterproof, insect and mouse prevention, mining cables, etc.

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Types and application occasions of common cables