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TEL: 0731-89895888

Address: Xiadopu Machinery Industrial Park, Ningxiang, Xiangjiang New District, Hunan Province

 

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Low voltage power cable

low voltage power cable, which is used to transmit and distribute electric energy. It is also called power cable and power cable in some occasions. Ordinary power cables are commonly used in high-rise buildings, oil fields, power stations, power plants, urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises and underwater transmission lines across rivers and seas; Low voltage fire-resistant power cable is suitable for high-rise buildings, oil fields, power stations, power plants, mines, chemical industries, mines, subways and other occasions requiring high fire protection conditions. It is also a required cable for emergency power supply, fire pump and elevator communication signal system; The product has high fire resistance. Under the condition of direct flame combustion, it will not have short circuit and open circuit faults within a certain period of time, so as to ensure continuous power supply to maintain lighting and transmit signals, protect personnel and have enough time to evacuate safely, which is conducive to fire extinguishing and reduce losses. The proportion of cables in power lines is gradually increasing. Power cable is a cable product used to transmit and distribute high-power electric energy in the main line of power system, including 0.6/1-1.8/3kv voltage level

Classification:

Power cable

Key words:

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Product Introduction

Application:

low voltage power cable, which is used to transmit and distribute electric energy. It is also called power cable and power cable in some occasions. Ordinary power cables are commonly used in high-rise buildings, oil fields, power stations, power plants, urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises and underwater transmission lines across rivers and seas; Low voltage fire-resistant power cable is suitable for high-rise buildings, oil fields, power stations, power plants, mines, chemical industries, mines, subways and other occasions requiring high fire protection conditions. It is also a required cable for emergency power supply, fire pump and elevator communication signal system; The product has high fire resistance. Under the condition of direct flame combustion, it will not have short circuit and open circuit faults within a certain period of time, so as to ensure continuous power supply to maintain lighting and transmit signals, protect personnel and have enough time to evacuate safely, which is conducive to fire extinguishing and reduce losses. The proportion of cables in power lines is gradually increasing. Power cable is a cable product used to transmit and distribute high-power electric energy in the main line of power system, including 0.6/1-1.8/3kv voltage level

Product Executive Standards:

GB / T 12706-2020 and iec60502. The performance of flame-retardant and fire-resistant cables meets the relevant provisions of GB / T 19666-2019。

Service conditions

AC rated voltage (U0 / U): 0.6/1kv

Maximum long-term operating temperature of cable

PVC insulation: 70 ℃

XLPE insulation: 90 ℃

Minimum ambient temperature

PVC insulation and sheath: fixed laying - 40 ℃; Non fixed laying - 15 ℃

 XLPE insulation and PVC sheath: fixed laying - 40 ℃, non fixed laying - 20 ℃

 XLPE insulation and low smoke halogen-free sheath: fixed laying - 20 ℃, non fixed laying - 10 ℃

The cable installation and laying temperature shall not be lower than 0 ℃

 

Fire resistance characteristics

Comply with iec331 Comply with GB/T19666
temperature

750℃

 temperature

950℃~1000℃

 temperature

75℃~800℃
time

3h

 time

90min

 time

90min
time

12h

 voltage Rated voltage voltage Rated voltage
voltage Rated voltage current

3A

 current

3A
Additional current

3A

 Category A Category B

Recommended allowable bending radius for laying: the single core cable shall not be less than 20 times of the outer diameter of the cable; The multi-core cable shall not be less than 15 times of the outer diameter of the cable

Basic model, name and main purpose of cable;

XLPE insulated power cable

type name main purpose

YJ（L）V

 Copper (aluminum) core XLPE insulated PVC sheathed power cable; It is suitable for indoor, tunnel, pipeline and cable trench, and can also be laid in loose soil without mechanical tension and pressure

YJ（L）Y

 Copper (aluminum) core XLPE insulated polyethylene (or polyolefin) sheathed power cable

YJ（L）V22

 Copper (aluminum) core XLPE insulated steel tape armored PVC sheathed power cable It is suitable for indoor, tunnel, pipeline, cable trench and underground direct buried laying. The cable can bear mechanical pressure, but can not bear large tensile force

YJ（L）V23

 Copper (aluminum) core XLPE insulated steel tape armored polyethylene (or polyolefin) sheathed power cable

YJ（L）V32

 Copper (aluminum) core XLPE insulated fine steel wire armored PVC sheathed power cable It is suitable for laying on shafts, bridges, channels and supports with large span under drop and vertical conditions. The cable can bear mechanical pressure and considerable tension

YJ（L）V33

 Copper (aluminum) core XLPE insulated fine steel wire armored polyethylene (or polyolefin) sheathed power cable

YJ（L）V42

 Copper (aluminum) core XLPE insulated thick steel wire armored polyethylene (or polyolefin) sheathed power cable It is suitable for laying on shafts, bridges, channels and supports with large span under drop and vertical conditions. The cable can bear mechanical pressure and large tensile force

YJ（L）V43

 Copper (aluminum) core XLPE insulated thick steel wire armored polyethylene (or polyolefin) sheathed power cable

 

PVC insulated power cable

type name main purpose

V（L）V

 Copper (aluminum) core PVC insulated PVC sheathed power cable It is suitable for indoor, tunnel, pipeline and cable trench, and can also be laid in loose soil without mechanical tension and pressure

V（L）Y

 Copper (aluminum) core PVC insulated polyethylene (or polyolefin) sheathed power cable

V（L）V22

 Copper (aluminum) core PVC insulated steel tape armored PVC sheathed power cable It is suitable for indoor, tunnel, pipeline, cable trench and underground direct buried laying. The cable can bear mechanical pressure, but can not bear large tensile force

V（L）V23

 Copper (aluminum) core PVC insulated steel tape armored polyethylene (or polyolefin) sheathed power cable

V（L）V32

 Copper (aluminum) core PVC insulated fine steel wire armored PVC sheathed power cable It is suitable for laying on shafts, bridges, channels and supports with large span under drop and vertical conditions. The cable can bear mechanical pressure and considerable tension

V（L）V33

 Copper (aluminum) core PVC insulated fine steel wire armored polyethylene (or polyolefin) sheathed power cable

V（L）V42

 Copper (aluminum) core PVC insulated thick steel wire armored PVC sheathed power cable It is suitable for laying on shafts, bridges, channels and supports with large span under drop and vertical conditions. The cable can bear mechanical pressure and large tensile force

V（L）V43

 Copper (aluminum) core PVC insulated thick steel wire armored polyethylene (or polyolefin) sheathed power cable

 

Low voltage fire-resistant power cable

type name

N-VV

 Copper core PVC insulated PVC sheathed fire-resistant power cable

ZN-VV22

 Copper core PVC insulated flame retardant PVC sheathed steel tape armored fire-resistant power cable

N-YJV

 Copper core XLPE insulated PVC sheathed fire-resistant power cable

ZN-YJV22

 Copper core XLPE insulated flame retardant PVC sheathed steel tape armored fire-resistant power cable

WDZN-YJY

 Copper core XLPE insulated low smoke halogen-free flame retardant olefin sheathed fire-resistant power cable

WDZN-YJY23

 Copper core XLPE insulated low smoke halogen-free flame retardant olefin sheathed steel tape armored fire-resistant power cable

 

The model representation method and performance index of power cable with combustion characteristics shall meet the requirements of GB / T 19666-2003.  
Code of flame retardant and fire resistant series cables：

Series Name Code characteristic
Flame retardant series (flame retardant cable) Halogenated

ZA

ZB

ZC

ZD

 Flame retardant Class A
Flame retardant class B
Flame retardant class C
Flame retardant Class D
Halogen free low smoke

WDZ

WDZA

WDZB

WDZC

WDZD

 Halogen free low smoke flame retardant
Halogen free low smoke flame retardant Class A
Halogen free low smoke flame retardant Class B
Halogen free low smoke flame retardant Class C
Halogen free low smoke flame retardant Class D
Fire-resistant series Halogenated

N

ZAN

ZBN

ZCN

ZDN

 refractory
Flame retardant Class A fire-resistant
Flame retardant Class B fire-resistant
Flame retardant Class C fire-resistant
Flame retardant Class D fire-resistant

Halogen free and low smoke (LSZH cable)

 

WDZN

WDZAN

WDZBN

WDZCN

WDZDN

 Halogen free low smoke flame retardant
Halogen free low smoke flame retardant Class A fire resistance
Halogen free low smoke flame retardant Class B fire resistance
Halogen free low smoke flame retardant Class C fire resistance
Halogen free low smoke flame retardant Class D fire resistance

 

Production scope：
Single core; 1.5-630mm2
2-5 cores 2-5: 1.5-400mm2

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