Chii Chinonzi Shielded Cable Uye Sei Iyo Shielding Layer Yakakosha Zvikuru?

Shielded cable, sezvinoreva zita racho, itambo ine anti-external electromagnetic interference capability inoumbwa muchimiro chetambo yekufambisa ine shielding layer. Izvo zvinonzi "kudzivirira" pamutambo wetambo zvakare chiyero chekuvandudza kugoverwa kwemagetsi emagetsi. Iyo conductor yetambo inoumbwa netambo dzakawanda dzewaya, izvo zviri nyore kuumba gap remhepo pakati payo neiyo insulation layer, uye iyo conductor yepamusoro haina kutsvedza, izvo zvinokonzeresa kuwanda kwemunda wemagetsi.

1.Cable shielding layer
(1). Wedzera nhovo yekudzivirira ye semi-conductive zvinhu pamusoro peiyo conductor, iyo yakaenzana neyakavharidzirwa conductor uye yakabatana zvakanaka neiyo insulation layer, kuitira kuti udzivise kuburitsa chikamu pakati pe conductor uye insulation layer. Iyi layer ye shielding inozivikanwawo se inner shielding layer. Panogonawo kunge paine mapundu mukusangana pakati penzvimbo yekudzivirira uye sheath, uye kana tambo yakakotama, iyo-oiri-bepa tambo yekumisa tambo iri nyore kukonzeresa kutsemuka, izvo zvinova zvinhu zvinokonzeresa kubuda.

(2). Wedzera nhovo yekudzivirira ye semi-conductive zvinhu pamusoro peiyo insulation layer, iyo inobata zvakanaka neyakavharidzirwa insulation layer uye yakaenzana kugona nesimbi sheath, kuitira kuti udzivise kubuda kwechidimbu pakati pechidzitiro chekudzivirira uye sheath.

Kuti aite zvakaenzanirana musimboti uye insulate munda wemagetsi, 6kV uye pamusoro pepakati nepamusoro tambo dzemagetsi kazhinji dzine conductor nhovo layer uye insulating nhovo layer, uye mamwe tambo dzepasi-voltage hadzina nhovo. Kune mhando mbiri dzematanho ekudzivirira: semi-conductive shielding uye simbi shielding.

2. Shielded cable
Iyo shielding layer yetambo iyi inonyanya kurukwa kuita network yewaya dzesimbi kana firimu resimbi, uye kune nzira dzakasiyana siyana dzekudzivirira imwechete nekudzivirira kwakawanda. Single shield inoreva shield net kana shield firimu, rinogona kupeta waya imwe kana kupfuura. Iyo yakawanda-yekudzivirira modhi ndeye kuwanda kwekudzivirira network, uye iyo inodzivirira firimu iri mune imwe tambo. Mamwe anoshandiswa kupatsanura kupindira kwemagetsi pakati pewaya, uye mamwe ari maviri-layer shielding anoshandiswa kusimbisa kudzivirirwa. The mechanism of shielding is kudzika shielding layer kuti iparadzanise iyo induced interference voltage yewaya yekunze.

(1).Semi-conductive shield
Semi-conductive shielding layer inowanzorongedzwa pamusoro pekunze kweiyo conductive waya core uye yekunze pamusoro peiyo insulation layer, zvichiteerana inonzi yemukati semi-conductive shielding layer uye yekunze semi-conductive shielding layer. Iyo semi-conductive shielding layer inoumbwa neye semi-conductive zvinhu ine yakaderera resistivity uye hutete hwakakora. Iyo yemukati semi-conductive shielding layer yakagadzirirwa yunifomu yemagetsi munda wekunze kweiyo conductor core uye kudzivirira chikamu chekubuda kweiyo conductor uye kuvharirwa nekuda kwekusaenzana kwepamusoro kwe conductor uye gap remhepo rinokonzerwa neiyo stranded core. Iyo yekunze semi-conductive nhovo inosangana zvakanaka nekunze kwenzvimbo yekudzivirira, uye yakaenzana nesimbi sheath kudzivirira kuburitswa kwechidimbu nesimbi sheath nekuda kwekukanganisa kwakadai sekutsemuka kwetambo yekuvharisa tambo.

(2). Metal shield
Kune epakati uye yakaderera voltage emagetsi tambo pasina simbi sheaths, mukuwedzera pakugadzika semi-conductive nhovo layer, asi zvakare wedzera simbi nhovo layer. Iyo metal shield layer inowanzoputirwa netepi yemhangurakana tambo yemhangura, iyo inonyanya kuita basa rekudzivirira munda wemagetsi.

Nekuti iyo yazvino kuburikidza netambo yemagetsi yakakura, iyo magineti ichagadzirwa yakatenderedza ikozvino, kuitira kuti isakanganise zvimwe zvikamu, saka shielding layer inogona kudzivirira iyi electromagnetic ndima mutambo. Mukuwedzera, iyo cable shielding layer inogona kuita rimwe basa mukudzivirira pasi. Kana iyo tambo yepakati ikakuvadzwa, iyo yakanyudza ikozvino inogona kuyerera pamwe nekudzivirira laminar kuyerera, senge networking network, kuita basa mukuchengetedza kuchengetedza. Zvinogona kuonekwa kuti basa retambo shield layer richiri rakakura kwazvo.