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來自:臨沂鑫領廢舊物資回收有限公司 發布日期:2019-6-14
核心提示:電線電纜中BV、BVR、BLV、BVVB、YJV、VLV代表什麼? 從字母解析開始 字母B 開頭字母為B,是電線的一些型号,B系列歸類屬于布電線,按用途分為電磁線和通用絕緣電線,今天講的是通用絕緣電線。
近期,平台上收到不少微友咨詢電線電纜的各種型号規格,

電線電纜中BV、BVR、BLV、BVVB、YJV、VLV代表什麼?

從字母解析開始

字母B

開頭字母為B,是電線的一些型号,B系列歸類屬于布電線,按用途分為電磁線和通用絕緣電線,今天講的是通用絕緣電線。

絕緣電線,又稱布電線,是指包覆絕緣層的電線,包括各種連接線、安裝線。

字母V

代表PVC聚氯乙烯,即護套塑料。

字母L

代表鋁導體的簡稱。

字母T

代表銅導體的簡稱。

字母R

R代表軟(ruan)的意思,電線要做到柔軟的效果,即需要增加導體的根數。

那麼,BV、BVR、BLV、BVVB分别是什麼電線型号?

BV ― 銅芯聚氯乙烯絕緣電線

BVR ― 銅芯聚氯乙烯絕緣軟電線

BLV ― 鋁芯聚氯乙烯絕緣電線

BVVB ― 銅芯聚氯乙烯絕緣聚氯乙烯護套扁形電線電纜




以2.5mm2舉例:

BV是1根直徑為1.78mm銅芯絕緣電線 ,

BVR則是7根0.68mm的銅芯絕緣軟電線;

BLV是1根直徑為1.78mm的鋁芯絕緣電線。

BVVB是2根平行并排的BV線,外加一層白色的護套層塑料。

BV&BVR共同點:

電工圓銅絲

PVC

紅,黃,藍,綠、雙色、白、黑等

450/750V

護套線,是指帶有護套層的單芯或多芯電線,一般是銅芯BV導線,導體外有一層絕緣層外,導線外面還有一層白色的聚氯乙烯保護層。

從軟硬程度上看,護套線分為硬護套線和軟護套線兩種;

從外觀性質上看,護套線分為圓護套線和扁護套線兩種。

字母YJ

代表交聯聚乙烯絕緣的簡稱。

那麼,YJV、VLV分别是什麼電纜型号?

YJV ― 銅芯交聯聚乙烯絕緣聚氯乙烯護套電力電纜

VLV ― 鋁芯聚氯乙烯絕緣聚氯乙烯護套電力電纜

YJV與VLV的共同點:

單芯、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

電工圓銅線 / 電工圓鋁線

聚氯乙烯PVC

适用于室内、電纜溝、管道、隧道等,也可埋在松散的土壤中,不能承受外力作業,一般用作電路傳輸的主幹道,額定電壓為電力線路輸配電用。

YJV與VLV的不同點:

YJV具有卓越的熱機械性能,優異的電氣性能和耐化學腐蝕性能,具有結構簡單、敷設不受落差限制等優點,是目前廣泛應用于城市電網、礦山和工廠的新穎電纜,電纜的載流量也較大,電纜導體最高額定工作溫度為90°C,比聚氯乙烯絕緣、聚乙烯絕緣電纜均高。

VLV電纜導體最高額定工作溫度為70°C,較YJV差一些。

謹記:

成品電線電纜及電線電纜芯需經工頻火花耐壓試驗。

電線電纜的标志須按GB6995标準執行,标志應清晰、耐擦。

國标BV電線電纜用于交流額定電壓450/750V及以下或直流電壓1000V及以下的電器裝置、儀表、裝修、電信設備、動力照明和線路,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.

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