1. Kev txhais thiab cov yam ntxwv ntawm XHHW Hlau
XHHW yog cov tsiaj ntawv luv ntawm "Hla Qhov Loj Kub-resistant dej-resistant", uas yog hais txog cov xov hlau uas siv cov ntaub ntawv sib txuas uas siv cov khoom siv rwb thaiv tsev. Nws cov yam ntxwv tseem ceeb muaj:
Kev kub siab rau qhov kub: Cov ntaub ntawv rwb thaiv tsev ntawm XHHW hlau tuaj yeem ua haujlwm stably nyob rau hauv ib puag ncig mus txog 90 degree thiab haum rau qhov chaw kub.
Kev tsis muaj dej tawm: nws rwb thaiv thaiv txheej muaj lub peev xwm waterproof zoo heev thiab haum rau cov chaw ntub dej lossis dej.
Tshuaj lom neeg tiv thaiv: Cross-txuas Polyethylene muaj zoo corrosion tsis kam rau ntau yam tshuaj thiab haum rau kev siv tshuaj chemosive ib puag ncig.
Mechanical zog: tus ntoo khaub lig-txuas muab nws siab dua lub zog thiab hnav tsis kam.
2. Kev sib piv nrog lwm cov hlau hom
1. Kev sib piv ntawm XHHW nrog Thhn / thwn
Thahn (thermoplastic High Rhaub Cov Kub Txheej) thiab thermopastic kub-resistant waterproof nyloof nylon yog cov hlau hom hlau. Lawv qhov sib txawv tseem ceeb yog cov ntaub ntawv rwb thaiv tsev thiab kev ua tau zoo:
Rwb thaiv tsev cov khoom: Thahn siv PVC (polyvinyl chloride) raws li rwb thaiv tsev cov khoom, thaum xhhw siv cov polyethylene sib txuas.
Ntsuas kub: thhn yog qhov haum rau cov chaw qhuav nrog ntsuas kub txog 90 degree; Thaum XHHW yog qhov tsim nyog rau qhov chaw qhuav thiab ntub dej nrog lub ntsuas kub txog 90 degree.
Kev Ua Dej Tsis Muaj Dej: Thwn yog Waterproof thiab Haum Kom Muaj Kev Tsis Yooj Yim; Thaum XHHW yog cov dej nyab ntau dua thiab tsim nyog rau cov chaw noo ntau.
Cov cuab yeej kho tshuab: vim qhov sib txawv hauv cov ntaub ntawv, kev siv tshuab lub zog thiab ua lub zog tsis kam ntawm xhhw feem ntau zoo dua li thhn.
2. Qhov zoo thiab qhov tsis zoo ntawm XHHW Vs. Thn / thwn
Cov txiaj ntsig: Tus ntoo khaub lig-txuas Polyethylene rwb thaiv tsev txheej ntawm xhhw muaj ntau dua kub, thiab yog haum rau qhov ntau ntawm ib puag ncig ntawm ib puag ncig.
Qhov tsis zoo: Vim yog cov nyom ntawm cov polyethylene sib txuas, XHHW yuav tsis yog siv hluav taws xob thhn, thiab ntau dua bending radius tej zaum yuav tsum tau thaum nruab nrab.
3. Daim ntawv thov cov xwm txheej ntawm XHHW thiab thhn / thwn
XHHW: Haum rau kev lag luam cov chaw, cov vaj tse lag luam, kev ua haujlwm hauv av cable thiab lwm qhov chaw uas xav tau kev ua haujlwm kub thiab kub.
Think / Thwn: Haum rau sab hauv tsev hauv cov chaw nyob hauv tsev, kev lag luam teeb pom kev zoo, thiab lwm yam.
3. Ul44 ntawv pov thawj thiab XHHW hlau
Ul44 yog tus qauv tsim los ntawm Underwriters Chaw soj ntsuam hauv Tebchaws Meskas rau cov kev xav tau ntawm thermosetting insulated xov hlau thiab cable. Xhhw xaim uas ntsib tus qauv Ul44 yuav tsum ua raws li cov xwm txheej hauv qab no:
Qib kub txog: Tsim nyog rau cov chaw qhuav thiab ntub dej ib puag ncig, nrog kub txog li 90 degree.
Voltage theem: feem ntau 600V lossis 1000V.
Cov Khoom Siv Yuav Tsum Tau: Siv Cross-txuas Polyethylene raws li cov khoom siv rwb thaiv tsev, nrog cov cua sov ua tsis kam thiab waterproofness.
Cov Cuab Yeej Siv Cov Neeg Kho Tshuab: Zoo tensile lub zog thiab coj kev tiv thaiv.
XHHW cov xov hlau tau lees paub los ntawm Ul44 ua kom muaj kev nyab xeeb thiab kev ntseeg tau nyob rau hauv ib puag ncig hnyav xws li kub thiab tshuaj corrosion.
4. Daim ntawv thov ntawm XHHW xaim
Vim lawv cov kev ua tau zoo, XHHW hlau tau siv dav hauv cov teb hauv qab no:
Muaj cov chaw muaj: siv rau kev sib kis hauv lub zog hauv qhov kub thiab cov av noo lossis cov tshuaj corrosive.
Cov vaj tse lag luam: siv rau kev xaim hluav taws xob ntawm cov kab hluav taws xob tseem ceeb, cov kab nruab nrab thiab cov tshuab teeb pom kev zoo.
Undergrofle pw: tsim nyog rau kev sib kis tau ntawm cov chaw muaj zog ntawm cov raj dej hauv av xws li cov raj hauv av thiab cov tunnels.
Daim ntaub ntawv sab nraum zoov: Siv nyob rau sab nraum zoov teeb pom kev zoo, xyuas cov khoom siv tshuaj xyuas thiab lwm qhov chaw uas xav tau kev tsav tsheb thiab huab cua tsis kam.
5. Txhim kho thiab txij nkawm ntawm XHHW xaim
Thaum txhim kho thiab tswj cov xov hlau XHHW, them nyiaj rau cov hauv qab no:
Dab tsi yog khoov radius: vim yog qhov rigidity ntawm cross-txuas polyethylene, qhov tsawg kawg nkaus kev lag luam vojvoog pom zoo los ntawm cov khw yuav tsum tau ua raws li lub teeb tsa.
Kev tiv thaiv kev tiv thaiv: Hauv kev siv corrosive ib puag ncig, kev tiv thaiv kev tiv thaiv ntxiv yuav tsum tau coj, xws li kev siv cov tshuaj tiv thaiv corrosion lossis sheaths.
Kev tshuaj xyuas ib txwm: Txheeb xyuas cov rwb thaiv tsev ntawm cov xov hlau kom ntseeg tau tias nws yog qhov teeb meem thiab daws teeb meem muaj peev xwm ua kom ncav sijhawm.