Brief Introduction of Cable Specifications, Types and Power and Control Cables

 

 

 

電纜線規(guī)格型號

春晨電機引接線 電機引出線 電機連接線

Specification and type of cable

 

電力電纜

 

power cable

 

控制電纜

 

Control cable

 

電纜線是一種多芯導線，即在一個絕緣軟管套內(nèi)鑲有多根相互絕緣的線芯。點來的種類很多，有電力電纜線、控制電纜線和通訊電纜線等，在電力系統(tǒng)中常用的電力電纜線和控制電纜線。這些電纜的型號及主要用途如下所示：

 

Cable is a kind of multi-core conductor, that is, there are many mutually insulated cores embedded in an insulating hose sleeve. There are many kinds of points, such as power cable, control cable and communication cable, which are commonly used in power system and control cable. The types and main uses of these cables are as follows:

 

 

 

電纜線規(guī)格型號

 

Specification and type of cable

 

YHZ型電纜線：中型橡套電纜：500V，電纜能承受相當機械外力；

 

YHZ cable: medium rubber sheathed cable: 500V, cable can withstand considerable mechanical external force;

 

YHC型電纜線：重型橡套電纜：500V，電纜能承受較大機械外力；

 

YHC cable: heavy rubber sheathed cable: 500V, cable can withstand greater mechanical external force;

 

YHH型電纜線：電焊機用橡套軟電纜：供連接電源用；

 

YHH cable: rubber sheathed flexible cable for welding machine: for connecting power supply;

 

YHHR型電纜線：電焊機用橡套特軟電纜：主要供連接卡頭用；

 

YHHR cable: rubber sheathed extra soft cable for welding machine: mainly for connecting clamp head;

 

KVV系列電纜線：聚氯乙烯絕緣及護套控制電纜：用于固定敷設，供交流500V及以下或直流1000V及以下配電裝置，作為儀表電器連接用；

 

KVV series cable: PVC insulation and sheath control cable: for fixed laying, for AC 500 V and below or DC 1000V and below distribution devices, as instrument and electrical connection;

春晨電機引接線 電機引出線 電機連接線

VV系列電纜線：銅芯聚氯乙烯絕緣及護套電力電纜：用于固定敷設，供交流500V及以下或直流1000V一下電力電路；

 

VV Series Cables: Copper Core PVC Insulated and Sheathed Power Cables: For Fixed Laying, Power Circuits under 500V AC or 1000V DC;

 

VLV系列電纜線：鋁芯聚氯乙烯絕緣及護套電力電纜：同上。

 

VLV Series Cables: Aluminum Core PVC Insulated and Sheathed Power Cables: Ibid.

 

電力電纜

 

power cable

 

電力電纜線截面

 

Section of power cable

 

 

 

電力電纜是用來輸送和分配大功率電能的導線。電纜的結構電纜由纜芯、絕緣層和防護層三個主要部分組成的，如右圖（a）所示。

 

Power cable is used to transmit and distribute high-power electric energy. The cable structure consists of three main parts: core, insulating layer and protective layer, as shown in the right figure (a).

 

 

 

纜芯：通常采用高電導率的銅或鋁制成，截面有圓形、半圓形、扁形等多種，有統(tǒng)一的標稱等級。線芯有單心、二心、四芯等幾種。單芯和雙芯電纜一般用來輸送直流電和單相交流電；三芯電纜用來輸送三相交流電；四芯電纜（中性線線芯截面較?。┯糜谥行渣c接地三相四線制配電系統(tǒng)中。

 

Core: Usually made of copper or aluminum with high conductivity, the cross-section is round, semi-circular, flat and so on, with a unified nominal grade. There are single core, two core, four core and so on. Single-core and double-core cables are generally used to convey DC and single-phase AC; three-core cables are used to convey three-phase AC; four-core cables (smaller cross-section of neutral core) are used in three-phase four-wire distribution system with neutral grounding.

 

 

 

絕緣層：電纜的絕緣層通常用紙、橡皮、塑料制成，作用是將線芯與線芯、線芯與保護層互相隔開和絕緣。

 

Insulation layer: The insulation layer of cable is usually made of paper, rubber and plastic. Its function is to separate and insulate the core from the core, the core from the protective layer.

 

 

 

保護層：保護層電纜外的保護層是保護線芯和絕緣層的，分內(nèi)保護層和外保護層。內(nèi)保護層保護絕緣層不受潮濕，并防止電纜浸漬劑外流，常用鋁（鉛）、塑料、橡套做成。外保護層保護著內(nèi)保護層不受機械損傷和化學腐蝕，常用的有瀝青麻護層、鋼帶（絲）鎧裝護層等幾種。至于無外保護層的電纜，裸鋁包電纜，則用于可能只有機械損傷和無化學腐蝕的地方。

 

Protective layer: The protective layer outside the protective layer cable is the protective core and insulation layer, which is divided into internal protective layer and external protective layer. The inner protective layer protects the insulating layer from dampness and prevents the outflow of cable impregnating agent. It is usually made of aluminium (lead), plastic and rubber sheath. The outer protective layer protects the inner protective layer from mechanical damage and chemical corrosion. The commonly used protective layers are asphalt linen layer and steel belt (wire) armoured layer. For cables without external protection, bare aluminium-clad cables are used where only mechanical damage and no chemical corrosion may occur.

 

 

 

控制電纜

 

Control cable

 

控制電纜：控制電纜是在配電裝置中傳導操作電流、連接電氣儀表及繼電保護和自動控制回路用的。其構造與電力電纜相似，如圖上有圖（b）所示，這種電纜屬于低壓電纜，運行電壓一般在交流500伏直流1000一伏以下。因電流不大，且是間斷負荷，所以截面較小，一般為1.5～10mm2，按緣材料可分為油浸紙絕緣控制電纜，橡膠絕緣控制電纜和聚氯乙烯絕緣控制電纜三種。

 

Control cable: The control cable is used for conducting operation current, connecting electrical instruments, relay protection and automatic control circuit in distribution equipment. Its structure is similar to that of power cables. As shown in the figure (b) above, this kind of cable belongs to low voltage cables, and its operating voltage is generally less than 1000 volts of AC 500 volts and DC. Because the current is small and the load is discontinuous, the cross section is small, generally 1.5-10 mm2. According to the edge material, it can be divided into oil-immersed paper insulated control cable, rubber insulated control cable and PVC insulated control cable.