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3.6/6kV～26/35kV XLPE insulated power cable

This product is produced in accordance with GB/T12706-2008 "Copper core and aluminum core plastic insulated power cables with rated voltages of 35kV and below". At the same time, it is also produced in accordance with the International Electrotechnical Commission's recommended standards IEC, British standards, German standards and American standards according to user needs.

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High voltage power cable

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- Commodity name: 3.6/6kV～26/35kV XLPE insulated power cable
- Commodity ID: cp2001
This product is produced in accordance with GB/T12706-2008 "Copper core and aluminum core plastic insulated power cables with rated voltages of 35kV and below". At the same time, it is also produced in accordance with the International Electrotechnical Commission's recommended standards IEC, British standards, German standards and American standards according to user needs.

Product Standards

This product is produced in accordance with GB/T12706-2008 "Copper core and aluminum core plastic insulated power cables with rated voltages of 35kV and below". At the same time, it is also produced in accordance with the International Electrotechnical Commission's recommended standards IEC, British standards, German standards and American standards according to user needs.

Scope of application

This product is suitable for power frequency rated voltage 3.6/6kV～26/35kV power transmission and distribution lines for power distribution.

Use characteristics

3.1 Power frequency rated voltage: U0/U(Um) 3.6/6(7.2)kV～26/35(40.5)kV

3.2 Allowable long-term working max temperature of cable conductor is 90℃

3.3 When short-circuit (duration does not exceed 5s) the maximum allowable temperature of the cable conductor does not exceed 250℃:

3.4 The ambient temperature during cable laying should not be lower than 0°C.

3.5 Cable bending radius: three-core cables are not less than 15 times the outer diameter of the cable, and single-core cables are not less than 20 times the outer diameter of the cable.

Type of cable

Model number	Name	Scope of use
YJV	Copper core XLPE insulated and PVC sheathed power cable	Indoors, tunnels, cable trenches and other places cannot bear external mechanical forces. Single-core cables are not allowed to be laid in magnetic pipes.
YJLV	Aluminum core XLPE insulated and PVC sheathed power cable
YJY	Copper core XLPE insulated and PE sheathed power cable
YJLY	Aluminum core XLPE insulated and PE sheathed power cable
YJV22	Copper core XLPE insulated steel tape armored PVC sheathed power cable	Indoors, tunnels, cable trenches are buried in the ground, etc., which can withstand certain mechanical external forces, but cannot withstand large tensile forces.
YJLV22	Aluminum core XLPE insulated steel tape armored PVC sheathed power cable
YJV23	Copper core XLPE insulated steel tape armored PE sheathed power cable
YJLV23	Aluminum core XLPE insulated steel tape armored PE sheathed power cable
YJV32	Copper core XLPE insulated thin steel wire armored PVC sheathed power cable	Indoors, tunnels, cable trenches, shafts or buried laying, etc., can withstand external mechanical forces and certain tensile forces.
YJLV32	Aluminum core XLPE insulated fine steel wire armored PVC sheathed power cable

Production range

型号	芯数	Rated voltage kV
		3.6/6	6/6 6/10	8.7/10 8.7/15	12/20	18/20 18/30	21/35	26/35
		Nominal cross section of conductor mm²
YJV YLJY YJY YJLY	1	25～800	25～800	25～800	25～800	25～800	25～800	25～800
YJV YLJY YJY YJLY	3	25～500	25～500	25～500	25～500	25～500	25～500	25～500
YJV22 YJLV22 YJV23 YJLV23	1	25～800	25～800	25～800	25～800	25～800	25～800	25～800
YJV22 YJLV22 YJV23 YJLV23	3	25～500	25～500	25～500	25～500	25～500	25～500	25～500
YJV32 YJLV23	1	25～800	25～800	25～800	25～800	25～800	25～800	25～800
YJV32 YJLV23	3	25～500	25～500	25～500	25～500	25～500	25～500	25～500

Cable operating conditions

1. Laying in the air

1.1 Center distance when single-core cables are laid in parallel: 185mm2 and below is twice the cable diameter, 240mm2 and above is 90mm.

1.2 The ambient air temperature: 40℃

1.3 Long-term maximum working temperature of conductor: 90℃

1.4 Correction factor for ampacity at different ambient temperatures

Ambient air temperature	20℃	25℃	30℃	35℃	40℃	45℃	50℃
Correction factor(k)	1.18	1.14	1.10	1.05	1.00	0.95	0.89

2. Directly buried laying

2.1 When the single-core cable is laid without contact, the distance between the center of the cable is twice the diameter of the cable.

2.2 Soil temperature: 25℃

2.3 Long-term maximum working temperature of conductor: 90℃

2.4 Soil temperature coefficient: 1.0℃.m/w

2.5 Direct buried depth: 0.7m

2.6 Download the correction coefficient of the flow rate for different soil temperatures

Soil temperature	15℃	20℃	25℃	30℃	35℃	40℃	45℃
Correction factor(k)	1.07	1.04	1.00	0.96	0.92	0.87	0.83

电缆安装使用

1、电缆的选择

1.1电缆的额定电压U0/U(Um)示为:U0是电缆设计用的导体对地或金属屏蔽之间的额定工频电压,U是电缆设计用的导体间的额定工频电压,Um是设备可承受的最高系统电压的最大值。

1.2根据电缆的敷设环境及负荷的不同，正确设计选择电缆的型号规格。非铠装型适用于架空、室内、隧道、电缆沟等场合，不能承受机械外力作用；铠装型同非铠装适用的条件外可直埋于地下，能承受一定的机械外力作用。单芯电缆不允许敷设在产生磁性管道中。易燃易暴、化学腐蚀性及高温、低温等场合应选择特殊型号的电缆。

2、储存和运输

电缆在储存中，应规范包装避免长期露天阳光暴晒，两端头可靠密封，不允许长期存放与潮湿的环境中且电缆盘不能平放。运输时应考虑盘高并有效固定，吊装时不允许几盘同时吊装，严禁从高处推下。

3、敷设和安装

3.1电缆应按照有关电力规程敷设。电缆在敷设时，应采用合理的操作方法和工具，如放线架、导辊等，防止电缆受到机械损伤。电缆接近热源、多棵电缆靠近敷设、土壤水分迁移、阳光直接照射、并行负载不平衡等，将影响电缆载流量和电缆的使用寿命。

3.2电缆穿管敷设时，管道内径不小于电缆外径的1.5倍,三棵单芯电缆穿管时，管内径应足够大，防止电缆受挤压。通常管线配合是管内电缆总面积不超过管子内孔面积的40%。

3.3电缆应在不低于0℃的环境下敷设。低于0℃时必须预先加热，否则在弯曲过程中会损伤电缆绝缘。

3.4电缆敷设组间影响

电缆在下列布置情况下,回路周围空气自由循环、可不考虑影响载流量降低系数。

3.4.1回路水平方向净距离不小于2倍单根电缆外径;

3.4.2回路垂直方向净距离不小于4倍单根电缆外径;

3.4.3水平方敷设回路超过3个;

3.5当采用牵引导体夹头方式敷设时，允许最大牵引力为P=OA(N)。其中A为导体截面（mm²），O为抗拉强度，铜导体为50N/mm2，铝导体为30N/mm2。

4、试验

安装结束后电缆进行绝缘电阻测试和直流耐压试验、泄露电流测量，历时15min.

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Type of cable

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Cable operating conditions

电缆安装使用