1.What txhais qhov chaw muaj kev puas tsuaj?
Cov chaw muaj kev phom sij yog cov chaw uas cov pa roj av uas muaj plua plav, plua plav tuaj yeem muaj plua plav, cov kev pheej hmoo ntawm hluav taws lossis tawg. Lub teb hluav taws xob cov xov tooj hluav taws xob (NEC) cais cov chaw no ua peb chav kawm thiab ob qhov kev faib tawm:
Chav kawm i: Cov gases gases lossis vapors (piv txwv li, approleum appraceries).
Hoob II: Cov hmoov av sib txuas (piv txwv li, nplej zom).
Hoob III: Ignitable fibers (piv txwv li, textile mills).
Division 1: Tshuaj muaj kev phom sij muaj nyob rau hauv kev ua haujlwm ib txwm muaj.
Div Lus 2: Cov tshuaj phem yog muaj nyob hauv qab tsis meej.
Kev siv hluav taws xob nyob rau hauv cov chaw zoo li ntawd yuav tsum ua raws li cov qauv kev nyab xeeb, suav nrog kev tawg-cov conduits, thiab kev siv cov kev nyab xeeb hauv kev nyab xeeb. Qhov no tsa cov lus nug:Puas yog xhhw xaim sib ntsib cov hlua khi no?
2.xHHW hlau: Cov yam ntxwv tseem ceeb thiab cov kev txwv
XHhw xaim yog tsim nrog cov ntoo khaub lig sib txuas (xlpe) rwb thaiv tsev, muab cov kev tiv thaiv zoo dua, noo noo, thiab puas. Cov ntawv thov feem muaj xws li:
Lub tsev lag luam
Muaj Machinery
Kev Txhim Kho Av (Xhhw Ncaj Ncees)
High-voltage Systems (piv txwv li,1 / 0 xhhw 1000hw 1000thiab3 / 0 xhhw tooj liab 600v)
Txawm li cas los xij,XHhw xaim tsis yog inherently rated rau cov chaw muaj kev phom sijCov. Thaum nws rwb thaiv tsev rwb thaiv tsev ua nws haum rau noo lossis av nyob rau 905 degree rau cov chaw ntub dej), cov chaw muaj kev phom sij feem ntau xav tau kev tiv thaiv ntxiv. Piv txwv li:
Kev tawg-ntawv pov thawj conduit conduit.
Intrinsic kev nyab xeeb kev nyab xeeb.
Ul-npe cov khoom siv tau pov thawj rau chav kawm I / II / III siv.
3.xhhw -2 xaim: Txhim kho qhov ua tau rau cov chaw xav tau
Tus4 / 0 xhhw -2 xaim hlauThiab lwm yam xhhw -2 Cov variants yog cov hloov pauv ntawm cov qauv XHHW, tsim kom muaj qhov chaw nyob ntau dua lossis qhuav). Qhov no ua rau lawv zoo tagnrho rau:
Hnub ci zog nruab.
Qhia txog kev thov faus neeg (nrog rau lub tsho tsim nyog).
Kev hwm siab-amperage circuits (piv txwv li,1aj, 2awg xhhwrau cov kab yug me nyuam).
Tab sis puas xhhw -2 Tau txais txiaj ntsig rau thaj chaw muaj kev puas tsuaj?
Thaum xhhw -2} muaj kev txhim kho thermal stability, nws tseem tsis muaj ntawv pov thawj yuav tsum muaj rau kev faib khoom 1. Txawm li cas los xij, hauv cov chaw sib faib 2 qhov chaw uas muaj kev phom sij tsawg-Xhhhw -2} Yuav tso cai nyob rau hauv cov condued condued thiab ua khub nrog tawg-pov thawj fittings. Yuav tsum tau sab laj lic tshooj {{{}} (b) thiab cov lej hauv zos ua ntej ua.
4.Qhov Kev Kawm: XHhW Cov Hlau Hauv Ncaj Ncees Kev Siv
Xhhw Ncaj Nceesyog ib qho kev coj ua rau kev xa hluav taws xob hauv kev hluav taws xob. Tus hlau's XLPE rwb thaiv tsev tiv thaiv cov dej noo thiab cov av paug, tab sis cov kev teeb meem av ntxiv cov chaw ntxiv. Piv txwv li:
3 / 0 xhhw tooj liab 600vtej zaum yuav siv nyob rau hauv av conduits nyob ze cov tso tsheb hlau luam roj (chav kawm I, Division 2).
1 / 0 xhhw 1000hw 1000Yuav muaj cov khoom siv sab nraud sab nraum zoov cov nroj tsuag sab nraum zoov, muab cov consuits yog ntim thiab sib raug zoo.
Cov kev txiav txim siab tseem ceeb rau kev ncaj ncaj hauv thaj chaw muaj kev phom sij suav nrog:
Kev sivUL-sau xhhw -2 xaimrau kev txhim kho durability.
Txhim kho cov hlau roj hlau ua nruj (RMC) nrog cov tshuaj tiv thaiv xeb.
Ua kev tshuaj xyuas ib txwm muaj rau rwb thaiv tsev ntseeg siab.
5.Qhov kev ntsuas thiab kev phom sij muaj kev phom sij
XHhw hlau muaj nyob rau hauv ntau lub voltage qib, suav nrog1 / 0 xhhw 1000hw 1000thiab3 / 0 xhhw tooj liab 600vCov. Cov kev ntsuas ntau dua (piv txwv li, 1000V) tau txais txiaj ntsig rau kev siv tshuab tab sis tsis ua rau muaj kev tsim nyog cov hlau rau kev siv kev phom sij. Hloov chaw, tsom rau:
Nec tsab xov xwm 310: Kub thiab ampacity ntsuas.
Nec tsab xov xwm 501: Kev sib dhos txoj kev rau chav kawm kuv thaj chaw.
UL 44 thiab UL UL 903: Cov qauv rwb.
Piv txwv li,1aj thiab 2awg xhhwCov xov hlau yuav tsim nyog rau kev faib tawm 2 lub cev muaj zog circuits yog tias ntsia nrog tawg-pov thawj ntsaws ruaj ruaj. Txawm li cas los xij, kev faib tawm 1 qhov feem ntau yuav tsum tau cov cables tshwj xeeb xws li TC-HL lossis MC-HL.
6.Arternives mus rau xhhw hauv cov chaw muaj kev phom sij
Thaum XHHHW hlau poob luv luv ntawm daim ntawv lees paub ntawm daim ntawv lees paub, xav txog cov kev xaiv no:
TC-HL (TAIS CAB CABLE LAWV LAWV LAWV): Ul-npe rau chav kawm I / II / III, Division 1.
MC-HL (HLAU-CLAD CABLE): Sib txuas sib txuas nrog tawg ua kom tsis kam.
Intrinsic kev nyab xeeb (yog) cables: Tsawg-zog circuits kom tiv thaiv kev tiv thaiv.
Rau cov phiaj xwm yuav tsum tau ua cov haujlwm hnyav ua haujlwm zoo li4 / 0 xhhw -2 xaim hlau, Hybrid cov kev daws teeb meem (piv txwv li, xhhw -2 hauv cov khoom siv) yuav choj cov sib txawv ntawm kev ua haujlwm thiab ua raws li.
Dongguan Ntau Ntau Hlau & Cable Co., Ltd.Muab cov hlau zoo xhhw hlau thiab MC cable, uas tau raug lees paub (ul363, ul1277, thiab lwm yam kub, thiab kev siv siab thauj khoom ib puag ncig. Peb cov clesables muaj cov zog ruaj khov, thiab super tiv thaiv kev cuam tshuam, thiab tau siv dav hauv kev lag luam, kev lag luam, cov phiaj xwm chaw nyob. Peb muaj lub ntiaj teb ua cov thev naus laus zis ntau lawm thiab 50 {} square 9}} square mav me nyuam ua kom ntseeg tau ntau yam khoom siv tau zoo thiab ruaj khov. Peb muab cov nqi sib tw thiab cov kev pabcuam customization los pab koj txhim kho koj cov kev sib tw ua lag luam! Txais tos rau sab laj rau cov lus tsocai!