Thaum nws los txog rau kev teeb tsa hluav taws xob, kev xaiv kom raug ntawm kev xaim thiab kev teeb tsa ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb, ua haujlwm tau zoo, thiab kev ntseeg tau ntev. Ib qho kev txiav txim siab tseem ceeb uas cov kws tsim hluav taws xob thiab cov kws tsim hluav taws xob ntsib yog xaiv txoj cai ntawm cov xaim siv nyob rau hauv ntau yam teeb meem kev teeb tsa, suav nrog kev siv cov tais cable. Ib lo lus nug uas tshwm sim yog seb THHN hlau, hom hlau nrov rau ob qho tib si hauv tsev thiab kev lag luam, tuaj yeem siv rau hauv cov tais cable.
Hauv tsab xov xwm no, peb yuav tshawb txog THHN hlau, nws cov yam ntxwv, thiab nws cuam tshuam li cas nrog kev teeb tsa cable tais. Peb kuj tseem yuav tham txog cov kev xav tseem ceeb thaum txiav txim siab yog tias THHN yog qhov kev xaiv zoo tshaj plaws rau koj lub tais cable.
THHN Hlau yog dab tsi?
THHN sawv cev rau Thermoplastic High Heat-resistant Nylon-coated wire. Nws yog ib leeg-conductor xaim feem ntau siv nyob rau hauv vaj tse, kev lag luam, thiab kev lag luam hluav taws xob. THHN hlau yog lub npe hu rau nws cov cua kub tsis kam, abrasion tsis kam, thiab yooj, ua rau nws zoo tagnrho rau ntau yam kev siv, nrog rau hauv cov kav dej thiab cable tais.
Cov yam ntxwv tseem ceeb ntawm THHN hlau muaj xws li:
Cov khoom siv rwb thaiv tsev: PVC (Polyvinyl Chloride) rau hluav taws xob rwb thaiv tsev.
Txheej: Nylon txheej uas muab kev puas tsuaj thiab tiv thaiv cov hlau los ntawm kev puas tsuaj rau lub cev.
Kev ntsuas hluav taws xob: Txog li 600 volts.
Kev ntsuas kub: 90 degree (194 degree F) nyob rau hauv qhuav qhuav, thiab mus txog 75 degree (167 degree F) nyob rau hauv ntub chaw.
Khoom siv: Copper (txawm hais tias aluminium variants kuj muaj nyob rau hauv qhov ntau thiab tsawg).
Yooj yim: THHN hlau yog hloov tau, ua rau nws haum rau routing los ntawm nruj qhov chaw los yog complex systems.
Dab tsi yog Cable Tray?
Lub tais cable yog ib qho kev txhawb nqa uas siv los thauj thiab teeb tsa cov xaim hluav taws xob lossis cov kab hluav taws xob, feem ntau hauv kev lag luam, kev lag luam, lossis kev siv thaj chaw loj. Cable tais muab txoj hauv kev nyab xeeb, txhim khu kev qha los txhim kho cov xov hlau thiab cables saum lub qab nthab lossis nrog cov phab ntsa, tiv thaiv lawv ntawm ib puag ncig kev phom sij thiab ua kom yooj yim rau kev saib xyuas yav tom ntej lossis hloov kho dua tshiab.
Cable tais tuaj nyob rau hauv ntau yam configurations thiab hom, xws li:
Khoom-hauv qab tais: Muab cov khoom nto rau kev txhawb nqa hlau, tiv thaiv cov cables los ntawm kev kov hauv av.
Perforated tais: Muab kev yooj yim rau hauv kev tso cable, nrog rau qhov uas tso cai rau kev nkag mus rau cable yooj yim thiab pab nrog cov cua sov dissipation.
Cov tais diav: Muaj cov qauv zoo li tus ntaiv, nrog cov kab dav dav uas tso cai rau cov xov hlau los so kom ruaj ntseg.
Cov tais diav: Muaj ib lub trough nrog ob sab kom ruaj ntseg cable ntim.
Cable tais feem ntau yog siv los txhawb lub zog, tswj, thiab kev sib txuas lus cables hauv ib puag ncig qhov twgcov kav dejtej zaum yuav tsis zoo tagnrho los yog qhov yuav tsum tau hloov pauv hloov.
THHN Hlau Yuav Siv Tau Hauv Cable Tais?
Yog lawm, THHN hlau tuaj yeem siv rau hauv cov tais cable, tab sis muaj ntau yam tseem ceeb uas yuav tsum tau xav txog ua ntej txiav txim siab qhov no. Wb saib yog vim li cas THHN thiaj li tsim nyog siv rau hauv cov tais cable thiab cov xwm txheej uas nws ua tau zoo tshaj plaws.
1. Ua raws li Cov Cai Lij Choj
Hauv ntau daim ntawv thov, lubNational Electrical Code (NEC) tswj kev teeb tsa hluav taws xob thaiv, suav nrog kev siv cov xov hlau hauv cov tais cable. Raws li NEC, THHN hlau yog ntsuas rau siv hauv cov tais cable raws li qee qhov xwm txheej, muab nws tsim nyog thiab siv nyob rau hauv nws cov ntsuas ntsuas.
Kev Ua Raws Cai:
THHN xaim yuav tsum tau muab tso rau hauv ib lub tais cable raws li Tshooj 392 ntawm NEC, uas tshwj xeeb hais txog kev teeb tsa cov cables hauv cov tais cable.
THHN hlau feem ntau siv tau rau hauv cov tais cable ntev npaum li nws tau ntsuas rau qhov chaw qhuav (los yog ua tau raws li THWN / THW version rau qhov chaw ntub dej).
Qhov siab tshaj plaws ambient kub yuav tsum tau txiav txim siab thaum siv THHN hlau nyob rau hauv ib lub tais cable los xyuas kom meej tias nws tsis tshaj cov hlau qhov ntsuas kub.
2. Durability thiab kev tiv thaiv
Ib qho tseem ceeb tshaj plaws ntawm THHN hlau nyob rau hauv ib lub tais cable installation yog nws durability. Cov txheej nylon muab kev tiv thaiv zoo tiv thaiv kev puas tsuaj, txo qhov ua rau lub cev puas tsuaj rau cov hlau thaum nws so hauv lub tais. PVC rwb thaiv tsev muaj kev tiv thaiv ntxiv los ntawm cov hluav taws xob tsis zoo, kom ntseeg tau tias cov hlau tuaj yeem ua haujlwm zoo txawm tias nyob rau hauv qhov hnyav.
Cov hlau tsis kam tiv thaiv yog qhov tseem ceeb hauv ib puag ncig cable tais, vim tias cov cables feem ntau raug siv rau kev siv tshuab. Nyob rau hauv ib lub tais cable, cov xov hlau yuav rub tawm ntawm lub tais cov npoo los yog tawm tsam lwm cov cables, uas tuaj yeem ua rau muaj kev puas tsuaj rau lub sijhawm ntev. Cov nylon txheej ntawm THHN xaim pab txo qhov kev pheej hmoo no, ua rau nws muaj kev ntseeg siab rau kev siv hauv cov tais cable.
3. Yooj yim thiab yooj yim ntawm kev teeb tsa
THHN hlau yog hloov tau yooj yim thiab yooj yim rau nruab, uas ua rau nws yog ib qho kev xaiv zoo heev rau kev teeb tsa nrog cov tais cable. Vim nws cov rwb thaiv tsev nyias nyias thiab hloov tau yooj yim, THHN xaim tuaj yeem yooj yim hla ntawm qhov chaw nruj thiab tuaj yeem khoov yam tsis muaj kev tawg, ua rau nws tsim nyog rau kev teeb tsa qhov twg cov kab tais txoj hauv kev cuam tshuam nrog kev sib tw ntse lossis cov teeb meem nyuaj.
Cov xaim hloov tau yooj yim tso cai rau nws yooj yim txav los ntawm cov tais thaum lub sijhawm teeb tsa thiab kev saib xyuas, uas yog qhov zoo thaum ntxiv lossis tshem cov cables yav tom ntej. Qhov no yog ib qho tseem ceeb tshwj xeeb hauv kev lag luam uas cov hluav taws xob hluav taws xob yuav xav tau kev hloov kho ntau zaus lossis ntxiv.
4. Chaw-Txuag thiab Lub Koom Haum
Cable tais yog tsim los ua kom txuag tau qhov chaw, muab cov txiaj ntsig zoo ntawm kev teeb tsa ntau cov xov hlau thiab cables hauv ib qho kev sib koom ua ke. THHN hlau tuaj yeem yooj yim ua ke ua ke hauv ib lub tais cable los muab kev zoo nkauj, kev teeb tsa.
Thaum siv THHN hlau nyob rau hauv ib lub tais cable, koj tuaj yeem txuag tau qhov chaw los ntawm kev npaj ntau cov xov hlau nyob ib sab los yog muab tso rau hauv lub tais. Lub koom haum no txo qhov kev pheej hmoo ntawm tangling lossis disorganized cabling, ua rau yav tom ntej txij nkawm thiab kev daws teeb meem yooj yim dua.
5. Kev xav txog ib puag ncig
THHN hlau yog tsim los siv rau hauv qhov chaw qhuav, ua rau nws tsim nyog rau kev teeb tsa qhov chaw noo noo thiab ib puag ncig tsis muaj kev txhawj xeeb. Txawm li cas los xij, yog tias lub cable tais kev teeb tsa nyob rau hauv thaj chaw uas muaj dej noo, xws li sab nraum zoov lossis hauv qab daus ntub dej, nws raug nquahu kom siv THWN version ntawm cov hlau, uas muaj kev tiv thaiv zoo dua rau cov dej noo.
Yog hais tias lub tais cable nyob rau hauv ib cheeb tsam uas muaj huab cua kub, xws li ib tug high-temperature ib puag ncig (xws li, nyob ze ntawm lub industrial cubs los yog furnaces), lub tshav kub-resistant zog ntawm THHN hlau yuav ua tau zoo, raws li nws yog rated kom tiv taus kub. mus rau 90 degree (194 degree F) hauv qhov chaw qhuav.
Yuav xav li cas thaum siv THHN Hlau hauv Cable Tais?
Thaum THHN hlau yog haum rau siv nyob rau hauv cable tais, ob peb yam yuav tsum tau ua tib zoo txiav txim siab ua ntej installation kom muaj kev ruaj ntseg thiab kev ua tau zoo:
1. Lub tais loj thiab hlau muaj peev xwm
Lub tais cable yuav tsum muaj qhov loj me kom haum rau cov xov tooj THHN siv. Cable tais yog tsim los pab txhawb ntau cov xov hlau, tab sis overcrowding tuaj yeem ua rau overheating lossis kev puas tsuaj rau lub cev. Nws yog ib qho tseem ceeb uas yuav tsum ua raws li cov chaw tsim khoom cov lus qhia txog yuav ua li cas muaj pes tsawg cov xov hlau tuaj yeem haum rau hauv lub tais thiab xyuas kom muaj qhov chaw txaus rau cov cua sov dissipation.
2. Kev ntsuas kub
Xyuas kom meej tias qhov ntsuas kub ntawm THHN xaim phim lub installation ib puag ncig. Nyob rau hauv ib puag ncig high-kub, xyuas kom meej tias cov hlau qhov ntsuas kub tuaj yeem tiv taus qhov kub thiab txias los tiv thaiv kev puas tsuaj ntawm rwb thaiv tsev. Yog hais tias lub installation nyob rau hauv ib qho chaw uas qhov kub thiab txias fluctuate heev los yog siab heev, siv hlau nrog ib tug siab dua ntsuas (xws li, XHHW los yog THW).
3. Zam kev puas tsuaj rau lub cev
Txawm hais tias THHN hlau ruaj khov, kev ntxhov siab ntau dhau los yog kev puas tsuaj rau lub phaj cable tuaj yeem cuam tshuam rau cov hlau ua haujlwm. Nws yog ib qho tseem ceeb uas yuav tsum tau soj ntsuam cov tais diav tsis tu ncua rau txhua qhov cim ntawm kev hnav, xeb, lossis kev puas tsuaj uas tuaj yeem ua rau cov xaim hluav taws xob tsis zoo rau lub sijhawm. Yog hais tias lub tais muaj cov npoo ntse los yog cov ntsiab lus uas cov hlau yuav raug khawb, xav txog kev siv kev tiv thaiv ntxiv xws li kaum tsev tiv thaiv lossis cov ntaub qhwv.
4. Kev tiv thaiv dej noo
Raws li THHN hlau raug ntsuas rau qhov chaw qhuav, raug dej noo tuaj yeem cuam tshuam nws txoj haujlwm. Yog hais tias lub cable tais nyob rau hauv ib qho chaw raug dej los yog av noo, xav txog kev siv THWN hlau los yog lwm yam haum rau cov chaw ntub dej. THWN hlau muaj ib qho kev tsim kho zoo ib yam li THHN hlau, nrog kev tiv thaiv ntxiv ntawm cov dej noo.
5. Cov kav dej siv
Txawm hais tias THHN hlau yog tsim los siv rau hauv cov tais cable, nws tseem tuaj yeem siv rau hauv cov kav dej rau kev tiv thaiv ntxiv, tshwj xeeb tshaj yog nyob rau thaj chaw uas muaj kev puas tsuaj rau lub cev. Conduit tuaj yeem muab cov txheej txheem tiv thaiv ntxiv, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj peev xwm cuam tshuam rau ib puag ncig kev phom sij.