重庆棋牌游戏中心

联系我们
15725781678
手机:
15725781678
手机:
15725781678
微信:
15725781678
QQ:
地址:
山东省临沂市兰山区

来自:临沂鑫领废旧物资回收有限公司 发布日期:2019-6-14
核心提示:电线电缆中BV、BVR、BLV、BVVB、YJV、VLV代表什么? 从字母解析开始 字母B 开头字母为B,是电线的一些型号,B系列归类属于布电线,按用途分为电磁线和通用绝缘电线,今天讲的是通用绝缘电线。
近期,平台上收到不少微友咨询电线电缆的各种型号规格,

电线电缆中BV、BVR、BLV、BVVB、YJV、VLV代表什么?

从字母解析开始

字母B

开头字母为B,是电线的一些型号,B系列归类属于布电线,按用途分为电磁线和通用绝缘电线,今天讲的是通用绝缘电线。

绝缘电线,又称布电线,是指包覆绝缘层的电线,包括各种连接线、安装线。

字母V

代表PVC聚氯乙烯,即护套塑料。

字母L

代表铝导体的简称。

字母T

代表铜导体的简称。

字母R

R代表软(ruan)的意思,电线要做到柔软的效果,即需要增加导体的根数。

那么,BV、BVR、BLV、BVVB分别是什么电线型号?

BV — 铜芯聚氯乙烯绝缘电线

BVR — 铜芯聚氯乙烯绝缘软电线

BLV — 铝芯聚氯乙烯绝缘电线

BVVB — 铜芯聚氯乙烯绝缘聚氯乙烯护套扁形电线电缆




以2.5mm2举例:

BV是1根直径为1.78mm铜芯绝缘电线 ,

BVR则是7根0.68mm的铜芯绝缘软电线;

BLV是1根直径为1.78mm的铝芯绝缘电线。

BVVB是2根平行并排的BV线,外加一层白色的护套层塑料。

BV&BVR共同点:

电工圆铜丝

PVC

红,黄,蓝,绿、双色、白、黑等

450/750V

护套线,是指带有护套层的单芯或多芯电线,一般是铜芯BV导线,导体外有一层绝缘层外,导线外面还有一层白色的聚氯乙烯保护层。

从软硬程度上看,护套线分为硬护套线和软护套线两种;

从外观性质上看,护套线分为圆护套线和扁护套线两种。

字母YJ

代表交联聚乙烯绝缘的简称。

那么,YJV、VLV分别是什么电缆型号?

YJV — 铜芯交联聚乙烯绝缘聚氯乙烯护套电力电缆

VLV — 铝芯聚氯乙烯绝缘聚氯乙烯护套电力电缆

YJV与VLV的共同点:

单芯、2芯、3芯、4芯、5芯、3+1芯、3+2芯、4+1芯

0.6/1KV

1.5-300mm2不等

电工圆铜线 / 电工圆铝线

聚氯乙烯PVC

适用于室内、电缆沟、管道、隧道等,也可埋在松散的土壤中,不能承受外力作业,一般用作电路传输的主干道,额定电压为电力线路输配电用。

YJV与VLV的不同点:

YJV具有卓越的热机械性能,优异的电气性能和耐化学腐蚀性能,具有结构简单、敷设不受落差限制等优点,是目前广泛应用于城市电网、矿山和工厂的新颖电缆,电缆的载流量也较大,电缆导体最高额定工作温度为90°C,比聚氯乙烯绝缘、聚乙烯绝缘电缆均高。

VLV电缆导体最高额定工作温度为70°C,较YJV差一些。

谨记:

成品电线电缆及电线电缆芯需经工频火花耐压试验。

电线电缆的标志须按GB6995标准执行,标志应清晰、耐擦。

国标BV电线电缆用于交流额定电压450/750V及以下或直流电压1000V及以下的电器装置、仪表、装修、电信设备、动力照明和线路,可明敷或暗敷。

Recently, many micro-friends have received various types and specifications of wire and cable for consultation on the platform.



What do BV, BVR, BLV, BVVB, YJV and VLV stand for in wires and cables?



Start with alphabetical parsing



Letter B



Starting with the letter B, it is a number of types of wires. Series B belongs to distribution wires. It can be divided into electromagnetic wires and general insulated wires according to their uses. Today we are talking about general insulated wires.



Insulated wires, also known as distribution wires, refer to the wires covered with insulation layer, including various connection wires and installation wires.



The letter V



Represents PVC polyvinyl chloride, that is, sheath plastic.



The letter L



Short for aluminium conductor.



The letter T



Abbreviation for copper conductor.



The letter R



R stands for "ruan". In order to make the wire soft, it is necessary to increase the number of conductors.



So, what are the models of BV, BVR, BLV and BVVB respectively?



BV-Copper Core PVC Insulated Wire



BVR-Copper Core PVC Insulated Soft Wire



BLV-Aluminum Core PVC Insulated Wire



BVVB-Copper Core PVC Insulated PVC Sheathed Flat Wire and Cable






Take 2.5 mm 2 as an example:



BV is a 1.78 mm diameter copper core insulated wire.



BVR is seven 0.68mm copper core insulated soft wires.



BLV is an aluminium core insulated wire with a diameter of 1.78 mm.



BVVB is two parallel BV lines with a white sheath plastic.



BV&BVR have something in common:



Electrical round copper wire



PVC



Red, yellow, blue, green, bicolor, white, black, etc.



450/750V



Sheathed wire refers to single-core or multi-core wires with sheath layer. Generally, copper-core BV conductor has an insulating layer outside the conductor and a white PVC protective layer outside the conductor.



From the point of view of the degree of hardness and softness, sheath wires can be divided into two types: hard sheath wires and soft sheath wires.



From the aspect of appearance, sheath line can be divided into round sheath line and flat sheath line.



The letter YJ



Short for cross-linked polyethylene insulation.



So, what cable types are YJV and VLV respectively?



YJV-Copper Core XLPE Insulated PVC Sheathed Power Cable



VLV-Aluminum Core PVC Insulated PVC Sheathed Power Cable



What YJV and VLV have in common:



Single core, 2 core, 3 core, 4 core, 5 core, 3 + 1 core, 3 + 2 core, 4 + 1 core



0.6/1KV



1.5-300 mm2



Electrical Round Copper Wire/Electrical Round Aluminum Wire



PVC



It is suitable for indoor, cable trench, pipeline, tunnel, etc. It can also be buried in loose soil and can not withstand external forces. It is generally used as the main road of circuit transmission and rated voltage is used for power line transmission and distribution.



The difference between YJV and VLV:



YJV has excellent thermomechanical properties, excellent electrical properties and chemical corrosion resistance. It has simple structure and no drop limitation. It is a novel cable widely used in urban power grid, mines and factories. The current carrying capacity of the cable is also large. The maximum rated operating temperature of the cable conductor is 90 C, which is higher than that of polyvinyl chloride insulated and polyethylene insulated cables.



The maximum rated working temperature of VLV cable conductor is 70 degree C, which is worse than YJV.



Keep in mind that:



The finished wires and cables and their cores need to undergo power frequency spark voltage withstanding test.



The marking of wires and cables shall be carried out in accordance with GB6995 standard. The marking shall be clear and rubbable.



National standard BV wire and cable is used for electrical devices, instruments, decoration, telecommunications equipment, power lighting and circuits with rated AC voltage of 450/750V or below or DC voltage of 1000V or below, which can be applied either openly or covertly.

版权所有:临沂鑫领废旧物资回收有限公司 
地址:山东省临沂市兰山区 ;尚经理; 手机:15725781678
工商营业执照信息公示

客服
分享
电话
服务电话:
15725781678
微信

微信公众号