天津塑力电缆手册

1、.：.；额定电压0.6/1kV聚氯乙烯绝缘电力电缆PVC insulated power cables with rated voltages 0.6/1kV一、产品用途Products application本产品适用于配电网、工业安装等领域，用于固定敷设在交流50Hz、额定电压0.6/1kV的电力输配电线路上，主要功能是保送电能。本产品为通常条件下运用的产品，不适用一些特殊条件的场所，如架空、水下、船用、海底、核电站等。阻燃聚氯乙烯绝缘电缆适用于具有阻燃要求的场所。耐火聚氯乙烯绝缘电缆适用于地下铁道、地下商场、大型购物中心、高层建筑等人口稠密、通风受限的场所。This product is

2、 applicable to being fixedly laid on the transmission and distribution line of alternative current rating 50Hz and rated voltage up to 0.6/1.0Kv with the use for power transmission, which is applied to the range of distribution network, industrial equipments, etc.This product is the nomal used cable

3、, not suitable for some special places, such asunderwater, ship, nuclear station, etc.二、产品主要技术特点Technique features本产品电缆除具有可靠的电气性能外，还具有较强的防止化学腐蚀性，耐酸、碱和有机溶剂，电缆不受敷设落差的限制，可在任何落差甚至垂直的场所敷设。 The product has good performance on electrical characteristic, chemical resistance, such as acid resistance, alkali

4、resistance and organic solvent resistance. The product can be laid on any head drop condition even vertically in any place, that is to say, the cable can be laid without limit on head drop.三、产品执行规范Standards7GB/T 12706.1-2002 额定电压1 kV(Um=1.2 kV)到35 kV(Um=40.5 kV)挤包绝缘电力电缆及附件第1部分：额定电压 1kV(Um=1.2 kV)和3

5、kV(Um=3.6 kV)电缆Power cables with extruded insulation and their for rated voltages from 1kV(Um=1.2kV) up to 35kV(Um=40.5kV) Part1:Cables for ratedvoltagesof 1kV(Um=1.2kV) and 3 kVUm=3.6 kVIEC 60502-1:1997 额定电压1 kV(Um=1.2 kV)到30 kV(Um=36 kV)挤包绝缘电力电缆及附件第2部分：额定电压 1 kV(Um=1.2kV)和3 kV(Um=3.6kV)电缆Power cab

6、les with extruded insulation and their for rated voltages from 1kV(Um=1.2kV) up to 35kV(Um=40.5kV) Part1:Cables for ratedvoltagesof 1kV(Um=1.2kV) and 3 kVUm=3.6 kVQ/12BJ4973-2002 额定电压0.6/1kV 五芯塑料绝缘电力电缆 Q/12BJ4973-2002 Five cores extruded plastic insulated power cables with rated voltages 0.6/1kVGB/T

7、 3956-1997 电缆的导体GB/T 3956-1997 Conductor of CablesGB/T19666-2005 阻燃耐火电线电缆通那么GB/T 19666-2005 General Rules of flame-retarding and fireproof cables四、运用特性Operating characteristics额定电压Rated Voltage电缆额定电压U0/U(Um)为：0.6/1(1.2)kV Rated Voltage of cable U0/U(Um)：0.6/1(1.2)kV其中：Notes：U0：电缆设计用的导体对地或金属屏蔽之间的额定工频

8、电压；Rated A.C. Voltage between conductor and ground/metal screen;U：电缆设计用的导体间的额定工频电压； Rated A.C. Voltage between conductorsUm：设备可接受的“最高系统电压“的最大值。The maximum system voltage which the equipments can be beared电缆的额定电压应适宜电缆所在系统的运转条件。为了便于选择电缆，将系统划分为以下三类：The rated voltage of cable shall be applicable to syst

9、em operation condition where the cable lain in. According to cable selecting, the system will be described as 3 types as follow:A类：任一相导体与地或接地导体接触时，能在1min内与系统隔离。System category A When any phase of cable conductor is contacting with earth conductor, the cable will be isolated with the system.B类：可在单相接地

10、缺点时作短时运转，但任何情况下不宜超越8h，每年接地缺点总继续时间不宜超越125h。System category B The system is allowed to run for 8 hours, when the single-phase earth fault is existing. And the total earth-fault time of 1 year wont be above 125 hours. C类：包括不属于A类和B类的系统。System category C They are including all systems besides A and B.注：在

11、系统接地缺点不能立刻自动解除时，缺点期间加在电缆绝缘上过高的电场强度，会在一定程度上缩短电缆寿命。如系统预期会经常地运转在耐久的接地缺点形状下，该系统应划为C类。When the system earth fault cant be removed automatically, the life of cable will be shortened in some degree because of the over-high electric stess beared by cable insulation.用于三项系统的电缆，U0的引荐值见表1。The recommended figure

12、 of U0 see the table 1, which are suitalbe for the three systems. 表1 额定电压U0引荐值Table1 The recommended figure of U0系统最高电压Um/kV The maximum system voltageUm/kV额定电压/kVRated Voltage/ kVA类、B类System categories A and BC类Systems categories C1.20.61.2导体额定任务温度 The rated temperature of conductor电缆导体的最高额定任务温度为70

13、。The maximum assigned temperature of the cable conductor is 70。短路时最长继续时间不超越5s电缆导体的最高温度不超越160。During having a short circuit, lasting less than 5 seconds, the maximum temperature of the cable conductor shall not be above 160.敷设环境温度 Ambient temperature for laying电缆敷设时的环境温度应不低于0，否那么需求事先预热。The ambient te

14、mperature for laying shall be above 0, if not the cable need be preheated.安装弯曲半径 The bend radius安装时电缆最小弯曲半径见表2。The minimun bend radius of the cable see the table 2表2 电缆安装时最小弯曲半径Table2 The minimun bend radius of the cable工程Item单芯电缆Single -core三芯电缆Three -core无铠装Unarmored有铠装Armored无铠装Unarmored有铠装Armore

15、d安装时的电缆最小弯曲半径 Minimun bend radius of the cable in course of installation20D15D15D12D接近衔接盒和终端的电缆的最小弯曲半径The minimun bend radius of the cable close to the junction box and terminal15D12D12D10D注：D为电缆外径mm。Note:D is outer diameter of the cable敷设方式电缆没有敷设落差限制。There is no limit of head drop during the cable

16、laying.电缆允许敷设在室内、室外、空气中和土壤中，允许部分有积水。The cable may be laid in indoor, outdoor, air and soil. The cable may be immersed in water locally.电缆敷设方式可以是隧道、管道、电缆沟、桥架、排管，铠装电缆允许直埋地下，钢丝铠装电缆允许垂直敷设。The cable may be laid in tunnel, pipe, trench, conduit and on cable bridge. The amoured cable can be laid undergroud

17、, and the wire- amoured cable can be laid vertically.单芯电缆不允许敷设在磁性金属管内。The single core cable mustnt be laid in the magnetic metal pipes.电缆敷设环境应有良好的散热条件。The enviroment of cable laying shall be in good heat dissipation condition.电缆敷设时导体最大允许牵引力和电缆最大允许侧压力The maxium allowed haul-off force and lateral pres

18、sure of cable导体最大允许牵引力计算方法：he calculating method of the maxium allowed haul-off force铜导体：F=70SN/mm2。铝导体：F=40SN/mm2。侧压力计算方法：P=FRN/m，最大允许侧压力不超越3000N/m。式中：F牵引力，N；lateral pressureS导体截面，mm2；conductor sectionP侧压力，N/m；lateral pressureR电缆弯曲半径，m；Bend radius电缆运输和保管要求The requirements on transportation and stor

19、age:电缆盘不允许平放。The cable reels shall not be delivered and stored in flat state运输中严禁从高处扔下装有电缆的电缆盘，严禁机械损伤电缆。It is strictly forbidden to push the cable reel from the high level in order to prevent the cable from damages电缆假设需求分段运用，电缆分段后必需用防水封帽将电缆头密封，防止进水。If the cable should be used sectionally, the head o

20、f the cable must be sealed in order to prevent water intake.五、产品表示方法Expressed method of product1、代号Code导体代号Conductor code铜导体省略Copper conductor ( omitted )T铝导体aluminium conductorL绝缘代号Insulation code聚氯乙烯绝缘 cross-linking polyethylene(XLPE) insulatedV 护套代号1Sheath code聚氯乙烯护套 polyvinyl chloride and sheath

21、V聚乙烯护套 polyethylene sheathY 铠装代号Amour code双钢带铠装steel tape armoured 2细圆钢丝铠装thin steel-wire armoured 3粗圆钢丝铠装thick steel-wire armoured 4双非磁性金属带2铠装 Double non-magnetic metal tape amoured6非磁性金属丝3铠装Non-magnetic metal-wire amoured7外护套代号Outer sheath code聚氯乙烯外护套 polyvinyl chloride outer sheath 2聚乙烯外护套 polyet

22、hylene outer sheath 3系列代号Series code阻燃系列fire-safe series阻燃A类flame-retardant class A ZA阻燃B类flame-retardant class B ZB阻燃C类flame-retardant class C ZC阻燃D类flame-retardant class D ZD耐火系列fire-safe series阻燃A类耐火flame-retardant class A fire-safeZAN阻燃B类耐火flame-retardant class B fire-safeZBN阻燃C类耐火flame-retardan

23、t class C fire-safeZCN阻燃D类耐火flame-retardant class D fire-safeZDN注：Note包括挤包的内衬层和隔离套等。 Including the extruding inner covering and separating tape.非磁性金属带包括不锈钢带、铝带等，假设订货时未注明，采用何种资料由制造方确定。 Non-magnetic metal tapes are including stainless steel tape, aluminium tape, etc. The materials will determined by t

24、he manufacturer, if the buyer not mentioned.非磁性金属丝包括不锈钢丝、铜丝、铝丝等，假设订货时未注明，采用何种资料由制造方确定。 Non-magnetic metal wires are including stainless steel tape, aluminium tape, etc. The materials will determined by the manufacturer, if the buyer not mentioned.2、产品表示方法Expressed method of product产品用型号型号中有数字代号的电缆外护

25、层，数字前的文字代号表示内护套、规格额定电压、芯数、标称截面和规范编号表示。The product is described as type (figure code of cable outer sheath, the word code in front of the figure means inner sheath), specification(rated voltage, cores numbers, sectioal area ) and standards code.3、产品型号组成The consistant of specifications产品型号的组成和陈列顺序如下：T

26、he consistant of specification, as follow:普通电缆型号组成阻燃耐火电缆型号组成注：电力电缆型号组成中绝缘通常作为系列代号。Note：The insulation in the cable specifications are the series code.4、产品表示方法 Expressed method of product例如：铝芯聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆，额定电压0.6/1kV，3+2芯，标称截面150mm2，表示为：VLV22-0.6/1 3*150+2*70 GB/T 12706.1-2002 Q/12BJ4973-2002

27、Example: Aluniminum conductor PVC insulated, steel tape armoured and PVC sheathed power cables, rated Voltages 0.6/1kV, 3+2 cores, Nominal cross area 150mm2, see the following:VLV22-0.6/1 3*150+2*70 GB/T 12706.1-2002 Q/12BJ4973-2002例如：铜芯聚氯乙烯绝缘钢带铠装聚氯乙烯护套电力电缆，额定电压为0.6/1 kV ，2芯，标称截面185mm2， 表示为：VV22-0.6

28、/1 2*185 GB/T12706.1-2002 Example: Copper conductor PVC insulated, steel tape armoured and PVC sheathed power cables, rated Voltages 0.6/1kV, 2 cores, Nominal cross area 185mm2, see the following:VV22-0.6/1 2*185 GB/T12706.1-2002铜芯聚氯乙烯绝缘聚氯乙烯内护套钢带铠装聚氯乙烯护套阻燃C类电力电缆，额定电压0.6/1kV，3芯，标称截面150mm2，表示为：ZC-VV22

29、-0.6/1 3*150 GB/T19666-2005/GB/T12706.1-2002 Example: Copper conductor PVC insulated, steel tape armoured and PVC sheathed flame-retardant class C power cables, rated Voltages 0.6/1kV, 3croes, Nominal cross area 150mm2, see the following:ZC-VV22-0.6/1 3*150 GB/T19666-2005/GB/T12706.1-2002 铜芯聚氯乙烯绝缘聚氯

30、乙烯内护套钢带铠装聚氯乙烯护套耐火电力电缆，额定电压0.6/1kV，3+2芯，标称截面150mm2，表示为：NHVV22-0.6/1 3*95+2*50 GB/T19666-2005/ Q/12BJ4973-2002 Example: Copper conductor PVCinsulated, steel tape armoured and PVC sheathed flame-retardant class C fire-safe power cables, rated Voltages 0.6/1kV, 3+2cores, Nominal cross area 150mm2, see t

31、he following:NHVV22-0.6/1 3*95+2*50 GB/T19666-2005/ Q/12BJ4973-2002六、产品型号、规格Types and specifications of products1、产品型号Type of product产品常用型号见表3。For the common product types , please see the table 3表3 产品型号Table 3 Type of product型号 Type产 品 名 称Name of product适用范围及环境Applicability and urroundings铜 芯Copper

32、 core铝 芯Aluminium coreVVVLV聚氯乙烯绝缘聚氯乙烯护套电力电缆PVC insulated PVC sheath power cable室内、隧道及电缆沟等场所，不能接受机械外力。单芯电缆不允许敷设在磁性管道中。For laying indoors 、 intunnel or cable trench,unable to bear external mechan-icalforces.Single-core cable in magnetic duct is not permissibleVYVLY聚氯乙烯绝缘聚乙烯护套电力电缆PVC insulated PE sheat

33、h power cableVV22VLV22聚氯乙烯绝缘双钢带铠装聚氯乙烯护套电力电缆PVC insulated steel tape armoured PVC sheath power cable室内、隧道、电缆沟内，或埋地敷设等，能接受一定机械外力，但不能接受大的拉力。 For laying indoors 、 in tunnel, cable trench, or direct in ground,able to bear external mechanicalforces, but unable to bear large pulling force 。VV23VLV23聚氯乙烯绝缘双

34、钢带铠装聚乙烯护套电力电缆PVC insulated steel tape armoured PE sheath power cableVV32VLV32交联聚乙烯绝缘细圆钢丝铠装聚氯乙烯护套电力电缆PVC insulated thin steel-wire armoured PVC sheath power cable 室内、隧道、电缆沟、竖井或埋地敷设等，能接受机械外力和一定的拉力。 For laying indoors 、 in tunnel, cable french, well or direct in ground,able to bear external mechanical

35、forces, and certain force 。VV33VLV32聚氯乙烯绝缘细圆钢丝铠装聚乙烯护套电力电缆PVC insulated thin steel-wire armoured PEsheath power cable VV42VLV42聚氯乙烯绝缘粗钢丝铠装聚氯乙烯护套电力电缆PVC insulated thin steel wire armoured PVC sheath power cablesVV43VLV43聚氯乙烯绝缘粗钢丝铠装聚乙烯护套电力电缆PVC insulated thin steel wire armoured PE sheath power cables2

36、、产品规格 Specification of product产品额定电压、导体标称截面和芯数见表4。For product rated voltage, conductor sectiona and the numbers of cores, please see the table 4.表4 产品规格Table 4 Specification of prouduct型 号Type芯数Number of cores标称截面Nominal cross area(2)VV,VY-VV22,VV23-VLV,VLYVLV22,VLV2311.5-3002.5-30010-300VV,VY-VV22

37、VV23-VLV,VLYVLV22 VLV2321.5-1852.5-1854-185VV,VY-VV22 VV23VV32 VV33VV42 VV43VLV,VLY-VLV22 VLV23VLV32 VLV33VLV42 VLV4331.5-3002.5-3004.0-30016-30016-300VV,VYVV22 VV23VLV,VLYVLV22 VLV2344-1854-185VV,VYVV22 VV23VLV,VLYVLV22 VLV233+14-1854-185VV,VYVV22 VV23VLV,VLYVLV22 VLV233+2、4+110-30010-300以上一切的型号和产品

38、规格中，阻燃电缆型号前加ZRA、ZRB、ZRC、ZRD，耐火电缆电缆型号前加NH,无卤低烟阻燃电缆电缆型号前加WDZC。七、产品构造 Product structure1、导体 Conductor导体应是符合GB/3956 的第一种或第2种裸退火铜导体或镀金属层退火铜导体，或这两种之一的裸铝导体或铝合金导体；或者第5种裸铜导体或镀金属层退火铜导体。The conductor shall meet the first one of the requirement of GB/3956 or the second one of that, that is bare anneal copper co

39、nductor, or bare aluminium conductor or aluminium alloy, or the fifth one of that, that is bare copper conductor or metal coated anneal copper conductor.2、耐火层fire resistant layer 耐火电缆导体外双层绕包耐火云母带，云母带绕包必需平整、严密，不允许有折皱、漏包等缺陷。 The cables are to overlap and wrap two layers of mica tape outside the cable

40、conductor so as to form the fire resistant layer.3、绝缘Insulation绝缘应严密挤包在导体上，且应容易剥离而不损伤绝缘体、导体或镀层。The insulation layer shall be extruded on the conductor, and it shall be easy to be stripped without damages on insulation, conductor and coating layer.4、隔离套有铠装电缆Inner sheathArmoured cables采用聚氯乙烯PVC或聚乙烯PE挤

41、包在缆芯上。The separated sheath is the extruding PVC or PE on the cable cores.5、铠装 Armoured多芯电缆采用镀锌钢带或镀锌钢丝，用于交流回路的单芯电缆采用非磁性金属带或金属丝见第五条。金属带采用双层间隙绕包，金属丝采用多根同心绞合。The amour of the multiple cable shall be zinc-plated steel tape or wire, but the amour of the single cable uesed in AC circuit shall be non-magnet

42、ic metal-tape or metal-wire. The tappering mode of metal tape should adopt double layer open tappering, and the mode of metal wire shall mutiple concentric stranding.注：大量现实证明，采用某种特殊构造铠装如添加铜丝的隔磁构造的单芯电缆用于交流回路时均出现电缆发热导致载流量大为下降的景象，所以不引荐采用。Note: A large number of facts show that the single cable with the

43、 special structure amour in the AC circuit exists the heating phenomenon, thus causing the reduction of current capacity. The manufacturer dont suggest to adopt this kind cable.6、外护套Outer sheath采用ST2型聚氯乙烯护套料或ST7型聚乙烯PE护套料挤包在铠装、绝缘或缆芯上。The materials of outer sheath are extruding ST2 PVCor ST7 PE on amo

44、ur, insulation or cable cores.7、废品电缆的标志Cable marks废品电缆的外护套外表印有厂名、型号、额定电压、芯数、标称截面和米数的延续标志。The outer sheath of the cable shall have the following information printed at regular intervals throughtout the length of the cable: Manufacturers Name, Type of cable, Rated Voltage, the numbers of cores, Sectio

45、nal Area and Meters Number of Continuous Marks.产品构造表示图Pictures of products structure普通电缆及阻燃和低烟无卤电缆产品构造表示图上图电缆型号：VV、VLV、VY、VLYType of above the pictures：VV、VLV、VY、VLY1导体 Conductore 2包带 Tape2绝缘 Insulation 4护套 Sheath上图电缆型号：VV22、VLV22、VV23、VLV23、YJV32、VLV32 VV33、VLV33Type of above the pictures：VV22、VLV2

46、2、VV23、VLV23、VV32、VLV32 VV33、VLV33、1导体 Conductore 4内衬层 Inner covering2绝缘 Insulation 5铠装Armor3包带 Tape 6护套 Sheath耐火电缆产品构造表示图上图电缆型号：NHVV、NHVYType of above the pictures：NHVV、NHVY1导体 Conductore 4包带Tape2耐火云母带 Mice flake asphalt tape 5护套 Sheath 3绝缘 Insulation 上图电缆型号：NHVV23、NHVV22Type of above the pictures：

47、NHVV23、NHVV221导体 Conductore 5内衬层 Inner covering2耐火云母带Mice flake asphalt tape 6铠装Armor 3绝缘 Insulation 7护套 Sheath4包带Tape八、产品主要技术性能Major technical Characteristics 电缆主要技术性能参数见表515。For the parameters of technical performance index of cables, please see talbe 5-15表5 电缆通用技术性能参数Table 5 The parameters of tec

48、hnical performance index of cables序号Order工程Item单位Unit目的Indicator1导体直流电阻D.C. resistance of conductor/km见表6see addenda A2绝缘电阻常数20，最小Constant of insulation resistance (20C, minimum)M/km3.673交流电压实验A.C. voltage test实验电压 test voltage实验时间 test duration实验结果 test resultkVmin3.55绝缘不发生击穿The insulation shall ha

49、ve no puncture4四小时高电压实验Four-hours high voltage test实验电压实验时间实验结果kVh2.44试样应不击穿 The sample shall have no puncture55.15.2绝缘热延伸实验insulation thermal elongation test实验条件 test conditions空气温度 air temperature载荷时间 loading time机械应力 mechanical stress负载下伸长率(最大)Extensibility on load (max)冷却后永久伸长率(最大)Permanent exte

50、nsibility after being cooled (max)minN/cm2%2003152017515表6成束阻燃性能要求Table 6 Bunched burning charateristic代号Code试样非金属资料体积/L/mVolumn of non metal materialsL/m供火时间/sTime of fire supply/s合格目的Acceptable index实验方法Test modeZAZBZCZD73.51.50.540402020试样上炭化的长度不应超越距喷嘴底边上2.5m;The length of carbonation is no more

51、than 2.5m from the bottom of nozzle停顿供火后试样上的有焰熄灭时间不应超越1hThe time of flaming combustion shall be no more than 1h, after fire supply is stopped.GB/T 18380.3IEC 60332-3-25ZD适用于试样外径不大于12mm的电线电缆.ZD is suitable for the cables whose samples outer diameter is no more than 12mm.表7 耐火特性Table 6 Fire-safe prope

52、rty耐火类别Fire-proof type火焰温度 Temperature of flame供火时间(min)Fire supply time电缆在额定电缆下Cable in the rated voltageA类Class A950-1000903A熔丝不熔断3A no fusingB类Class A750-1000903A熔丝不熔断3A no fusing表8 导体电阻Table 6 Resistance of conductor导体标称截面/mm2Nominal cross area of conductor/mm220导体直流电阻/kmResistance of conductor

53、in 20 导体交流电阻/kmConductor AC resistance/km铜导体Copper core铝导体Aluminium core.铜导体Copper core铝导体Aluminium core.101.833.082.3333.964161.151.911.4662.458250.7271.200.9271.54350.5240.8680.6681.11500.3870.6410.4930.822700.2680.4430.3420.568950.1930.3200.3470.4111200.1530.2530.1960.3251500.1240.2060.1590.26518

54、50.09910.1640.1280.2112400.07540.1250.09850.1623000.06010.1000.07970.1304000.04700.07780.06400.1025000.03660.06050.05040.07996300.02830.04690.04060.06348000.02210.03670.03360.0509表9 电缆电容Table7 Capacitance of cable导体标称截面/Nominal cross area of conductor/mm2每相电容/F/kmCapacitance of eath phase/F/km导体标称截面

55、/Nominal cross area of conductor/mm2每相电容/F/kmCapacitance of eath phase/F/km导体标称截面/Nominal cross area of conductor/mm2每相电容/F/kmCapacitance of eath phase/F/km1.50.58351.512402.082.50.69501.53002.1240.70701.754002.2160.82951.815002.34101.111202.016302.63161.351501.988002.92251.321851.99表10 电抗Table 10 R

56、eactance (/km)导体标称截面Nominal cross area of conductor/mm2电抗/km Reactance (/km)VV、VLV、VY、VLY、(单芯Sing core)VV、VLVVY、VLYVV23、VLV23 (两芯Two cores)VV、VLVVY、VLYVV23、VLV23(三芯、四芯3cores、4芯)VV、VLVVY、VLYVV23、VLV23 (3+1芯、3+1 cores)VV、VLVVY、VLYVV23、VLV23 (3+2芯、4+1芯、5芯、3+2 cores、4+1cores、5 cores)1.50.1520.01080.108-

57、2.50.0.09960.0996-40.1310.09920.09920.09920.099260.1260.09350.09350.09350.0935100.1140.08890.08890.08890.0889160.1060.08440.08440.08440.0844250.1070.08480.08480.08480.0848350.1030.08220.08220.08220.0822500.09540.07960.07960.07960.0796700.09120.07660.07660.09660.0966950.08910.07640.07640.07640.076412

58、00.08540.07410.07410.07410.07411500.08730.07430.07430.07430.07431850.08570.07420.07420.07420.07422400.0839-0.07320.07320.07323000.0834-0.07290.07290.07294000.0816-5000.0803-6300.0781-8000.0755-表11 无铠装电缆载流量Table 9 Current carrying of unarmored cable适用电缆型号：VV、VLV、VY、VLYApplicable cable types: VV、VLV、V

59、Y、VLY导体最高允许任务温度：70The maximum assigned temperature of the conductor is 70.环境温度：25Ambient temperature：25土壤热阻系数：120cm/WSoil thermal resistivity 120cm/W导体截面mm2Conductor cross area mm2空气中敷设长期延续负荷允许载流量ALaying long-term continuous load allowable current-carrying capacity in the air (A) 直埋敷设长期延续负荷允许载流量ADir

60、ect-buried laying long-term continuous load allowable current-carrying capacity A铜芯Copper core铝芯Aluminium core.铜芯Copper core铝芯Aluminium core.一芯One- core二芯Two-core三芯Three-core四芯Four-core一芯One- core二芯Two-core三芯Three-core四芯Four-core一芯One- core二芯Two-core三芯Three-core四芯Four-core一芯One- core二芯Two-core三芯Thre