Tus neeg xyuas pib shielding txheej (tseem hu ua inner shielding txheej, sab hauv semi-conductive txheej)
Tus neeg xyuas pib shielding txheej yog ib txheej uas tsis yog-hlau extruded ntawm tus neeg xyuas pib cable, uas yog equipotential nrog tus neeg xyuas pib thiab muaj qhov ntim resistivity ntawm 100 ~ 1000Ω•m.Equipotential nrog tus neeg xyuas pib.
Feem ntau, qis-voltage cables ntawm 3kV thiab hauv qab no tsis muaj ib tug conductor shielding txheej, thiab nruab nrab thiab high-voltage cables ntawm 6kV thiab saum toj no yuav tsum muaj ib tug conductor shielding txheej.
Lub luag haujlwm tseem ceeb ntawm tus neeg xyuas pib shielding txheej: tshem tawm qhov tsis sib xws ntawm tus neeg xyuas pib nto;tshem tawm cov nyhuv ntawm tus neeg xyuas pib nto;tshem tawm cov pores ntawm tus neeg xyuas pib thiab cov rwb thaiv tsev;ua tus neeg xyuas pib thiab cov rwb thaiv tsev nyob ze;txhim kho cov hluav taws xob xa hluav taws xob nyob ib ncig ntawm tus neeg xyuas pib;rau cross-linked cable conductor shielding txheej, nws kuj muaj kev ua haujlwm ntawm inhibiting kev loj hlob ntawm cov ntoo hluav taws xob thiab tiv thaiv tshav kub.
Rwb thaiv tsev txheej (tseem hu ua lub ntsiab rwb thaiv tsev)
Lub ntsiab rwb thaiv tsev ntawm lub cable muaj cov haujlwm tshwj xeeb ntawm kev tiv thaiv qhov system voltage.Thaum lub sij hawm kev pab cuam lub neej ntawm lub cable, nws yuav tsum tiv taus qhov ntsuas voltage thiab overvoltage thaum lub sij hawm tsis ua hauj lwm rau lub sij hawm ntev, xob laim impulse voltage, los xyuas kom meej tias tsis muaj cov txheeb ze los yog theem-rau-theem breakdown luv Circuit Court tshwm sim nyob rau hauv lub ua hauj lwm cua sov lub xeev.Yog li ntawd, cov khoom siv rwb thaiv tsev tseem ceeb yog tus yuam sij rau qhov zoo ntawm cable.
Hla-txuas polyethylene yog cov khoom siv insulating zoo, uas tam sim no tau siv dav.Nws cov xim yog xiav-dawb thiab translucent.Nws cov yam ntxwv yog: siab rwb thaiv tsev tsis kam;muaj peev xwm tiv taus lub zog ntau zaus thiab mem tes hluav taws xob ua kom tawg lub zog;tsawg dielectric poob tangent;ruaj khov khoom;Kev ua haujlwm kub zoo, kev ua haujlwm ntev ntev ntawm qhov kub ntawm 90 ° C;zoo mechanical zog, yooj yim ua thiab txheej txheem kev kho mob.
Rwb thaiv tsev thaiv txheej (tseem hu ua txheej thaiv txheej, txheej txheej semi-conductive)
Lub rwb thaiv tsev tiv thaiv txheej yog txheej tsis yog xim hlau extruded ntawm lub ntsiab rwb thaiv tsev ntawm lub cable.Nws cov khoom tseem yog cov khoom sib txuas nrog cov khoom siv hluav taws xob thiab cov khoom ntim ntawm 500 ~ 1000Ω•m.Nws yog equipotential nrog kev tiv thaiv grounding.
Feem ntau, qis-voltage cables ntawm 3kV thiab hauv qab no tsis muaj txheej rwb thaiv tsev tiv thaiv, thiab nruab nrab thiab high-voltage cables ntawm 6kV thiab saum toj no yuav tsum muaj ib txheej rwb thaiv tsev tiv thaiv.
Lub luag hauj lwm ntawm cov rwb thaiv tsev tiv thaiv txheej: kev hloov pauv ntawm lub ntsiab rwb thaiv tsev ntawm cov cable thiab grounding hlau shielding, kom lawv muaj kev sib raug zoo, tshem tawm qhov sib txawv ntawm cov rwb thaiv tsev thiab cov khoom siv hauv av;tshem tawm cov nyhuv ntawm qhov chaw ntawm daim kab xev hauv av;txhim kho cov hluav taws xob xa hluav taws xob nyob ib ncig ntawm qhov chaw rwb thaiv tsev.
Rwb thaiv tsev shielding yog muab faib ua strippable thiab non-strippable hom raws li tus txheej txheem.Rau nruab nrab voltage cables, strippable hom yog siv rau 35kV thiab hauv qab no.Zoo strippable rwb thaiv tsev shielding muaj zoo adhesion, thiab tsis muaj semi-conductive hais nyob tom qab stripping.Hom tsis-strippable yog siv rau 110kV thiab siab dua.Cov txheej txheem uas tsis yog strippable shielding yog nruj dua ua ke nrog lub ntsiab rwb thaiv tsev, thiab cov txheej txheem kev tsim kho yuav tsum siab dua.
Hlau thaiv txheej
Cov hlau thaiv txheej yog qhwv sab nraum lub rwb thaiv tsev thaiv txheej.Cov txheej txheem hlau thaiv feem ntau yog siv tooj liab daim kab xev los yog tooj liab hlau.Nws yog cov qauv tseem ceeb uas txwv tsis pub muaj hluav taws xob hauv lub cable thiab tiv thaiv tus kheej kev nyab xeeb.Nws kuj tseem yog ib qho kev tiv thaiv hauv av uas tiv thaiv cable los ntawm kev cuam tshuam hluav taws xob sab nraud.
Thaum muaj qhov ua txhaum hauv av lossis luv luv tshwm sim hauv qhov system, cov hlau thaiv txheej yog cov channel rau qhov luv-circuit grounding tam sim no.Nws qhov chaw hla ntu yuav tsum suav thiab txiav txim siab raws li qhov system luv luv-circuit peev thiab nruab nrab point grounding txoj kev.Feem ntau, qhov chaw hla ntawm cov txheej thaiv thaiv kev suav rau 10kV system yog pom zoo kom tsis pub tsawg tshaj 25 square millimeters.
Nyob rau hauv cov kab hluav taws xob ntawm 110kV thiab saum toj no, cov hlau thaiv txheej yog tsim los ntawm cov hlau sheath, uas muaj ob qho tib si hluav taws xob tiv thaiv hluav taws xob thiab cov dej tsis sib txuas, thiab tseem muaj kev tiv thaiv kev ua haujlwm.
Cov khoom siv thiab cov qauv ntawm cov hlau sheath feem ntau txais yuav corrugated aluminium sheath;corrugated tooj liab sheath;corrugated stainless hlau sheath;txhuas sheath, thiab lwm yam Tsis tas li ntawd, muaj cov ntaub ntawv sib xyaw ua ke, uas yog cov qauv hauv cov ntawv txhuas txhuas txuas nrog PVC thiab PE sheaths, uas yog siv dav hauv European thiab Asmeskas cov khoom.
Armor txheej
Ib txheej hlau armor yog qhwv ib ncig ntawm cov txheej hauv ob sab hauv, feem ntau siv ob txheej txheej galvanized steel siv armor.Nws txoj haujlwm yog los tiv thaiv sab hauv ntawm lub cable thiab tiv thaiv cov neeg kho tshuab sab nraud los ntawm kev puas tsuaj rau lub cable thaum siv thiab ua haujlwm.Nws kuj muaj kev ua haujlwm ntawm kev tiv thaiv hauv av.
Cov txheej armor muaj ntau yam qauv, xws li steel hlau armor, stainless hlau armor, non-hlau armor, thiab lwm yam., uas yog siv rau tshwj xeeb cable lug.
Post lub sij hawm: Jun-28-2024
