THHN hlau, los yog Thermoplastic High Heat-resistant Nylon-coated hlau, yog ib tug dav siv hluav taws xob conductor nyob rau hauv ntau yam kev siv. Nws durability thiab tsis kam mus rau huab cua txias ua rau nws nyiam xaiv nyob rau hauv ob qho tib si siab thiab qis-kub ib puag ncig. Txawm li cas los xij, kev nkag siab yuav ua li cas THHN xaim, lossis xaim THHN, ua haujlwm raws li cov xwm txheej no yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb, ua haujlwm tau zoo, thiab siv tau ntev hauv kev teeb tsa hluav taws xob. Kab lus no tshawb txog qhov ntsuas kub, cov yam ntxwv ntawm kev ua haujlwm, thiab cov kev xav tau ntawm THHN hlau nyob rau hauv ib puag ncig huab.
Kev tsim kho thiab ntsuas kub ntawm THHN Hlau
Txhawm rau kom nkag siab tias THHN hlau tswj qhov ntsuas kub li cas, nws yog ib qho tseem ceeb uas yuav tsum tau tshuaj xyuas nws cov kev tsim kho thiab kev ntsuas:
Tus coj:
Feem ntau ua los ntawm tooj liab lossis txhuas, ua kom muaj hluav taws xob zoo heev.
Thermoplastic rwb thaiv tsev:
Ua los ntawm polyvinyl chloride (PVC), muab cov cua sov thiab hluav taws xob rwb thaiv tsev.
Nylon Txheej:
Muab kev tiv thaiv ntxiv tiv thaiv kev puas tsuaj, tshuaj lom neeg, thiab ib puag ncig yam.
Kev ntsuas kub:
Qhov chaw qhuav: THHN hlau yog ntsuas los ua haujlwm ntawm qhov kub txog li 90 degree (194 degree F).
Qhov chaw ntub dej: Nws tuaj yeem tswj qhov kub txog li 75 degree (167 degree F).
Tsawg-kub txwv: Feem ntau ntsuas rau kev teeb tsa mus rau -10 degree (14 degree F), nyob ntawm cov chaw tsim khoom.
Kev ua tau zoo ntawm THHN Hlau nyob rau hauv High-Temperature Ib puag ncig
1. Thaum tshav kub kub tsis kam
Cov rwb thaiv tsev thermoplastic thiab nylon txheej ntawm THHN hlau yog tsim tshwj xeeb los tiv thaiv qhov kub thiab txias.
Durability:
Thaum kub txog li 90 degree nyob rau hauv qhov chaw qhuav, cov rwb thaiv tsev tsis zoo, tiv thaiv degradation.
Cov nylon txheej ua kom muaj kev tiv thaiv ntxiv, txawm tias nyob hauv ib puag ncig nrog qhov kub thiab txias.
Hluav taws xob Efficiency:
Qhov ntsuas kub siab tuaj yeem ua rau muaj hluav taws xob ntau ntxiv. Txawm li cas los xij, THHN hlau yog tsim los txo qis kev tiv thaiv nyob rau hauv nws qhov ntsuas kub ntau, kom ntseeg tau tias muaj zog sib kis tau zoo.
2. Cov ntawv thov hauv Cov Chaw Kub Kub Kub
Kev lag luam ib puag ncig:
Cov tshuab thiab cov khoom siv uas ua kom muaj cua sov tseem ceeb feem ntau siv THHN hlau rau kev sib txuas hluav taws xob.
HVAC Systems:
THHN hlau yog qhov zoo tagnrho rau cov khoom siv hauv cov cua sov thiab cua txias.
Cov chav ua noj ua lag luam:
Cov xaim hluav taws xob tiv thaiv hluav taws xob ua rau nws tsim nyog rau kev xaim hauv thaj chaw raug tshav kub, xws li qhov cub thiab cov hniav nyiaj hniav kub.
3. Kev ceev faj rau qhov kub thiab txias
De-rating Factors:
Qhov kub ambient kub tuaj yeem txo cov hlau ampacity. Cov lej hluav taws xob feem ntau xav tau kev ntsuas kev ntsuas ntsuas kom ntseeg tau tias muaj kev nyab xeeb.
Kev tiv thaiv:
Siv cov kav dej thiab cov rwb thaiv tsev kom zoo los tiv thaiv cov xov hlau los ntawm kev raug ncaj qha mus rau qhov chaw kub heev.
Kev ua tau zoo ntawm THHN Hlau nyob rau hauv qis-kub ib puag ncig
1. Flexibility thiab Durability
Ntawm qhov kub thiab txias, kev ua haujlwm ntawm THHN hlau tuaj yeem cuam tshuam los ntawm cov khoom siv ntawm nws cov rwb thaiv tsev thiab txheej:
PVC rwb thaiv tsev:
tuaj yeem ua nruj thiab ua rau tawg thaum raug kub heev, tshwj xeeb tshaj yog thaum lub sijhawm teeb tsa.
Nylon Txheej:
Muab qee qhov hloov tau yooj yim tab sis kuj tseem tuaj yeem ua nkig ntawm qhov kub thiab txias.
2. Cov ntawv thov hauv Cov Chaw Txias
Tub yees Systems:
THHN hlau yog siv rau hauv cov kab hluav taws xob rau lub freezers thiab chaw cia txias.
Sab nraum zoov Installations:
Haum rau kev xaim hauv qhov ntub dej tab sis tiv thaiv qhov chaw sab nraum zoov uas qhov kub thiab txias yuav poob qis.
3. Kev ceev faj rau qhov kub thiab txias
Pre-installation tuav:
Tsis txhob khoov lossis rub THHN hlau ntau dhau rau hauv cov dej khov kom tiv thaiv kev puas tsuaj ntawm cov rwb thaiv tsev.
Temperature-Rated Alternatives:
Rau qhov kub tsis tshua muaj siab, xav txog kev siv cov xov hlau nrog kev ntsuas qhov ntsuas kub qis, xws li XHHW-2.
Cov kev coj ua zoo tshaj plaws rau kev siv THHN hlau hauv qhov kub thiab txias
Nkag siab cov xwm txheej puag ncig
Ntsuas qhov xav tau qhov kub thiab txias ntawm qhov chaw teeb tsa thiab sib piv nrog cov hlau qhov ntsuas kub.
De-rating Calculations
Xa mus rau National Electrical Code (NEC) rau kev txiav txim siab qhov yuav tsum tau muaj nyob rau hauv qhov chaw siab lossis qis qis.
Conduit Protection
Nruab THHN hlau hauv cov kav dej los tiv thaiv nws los ntawm kev raug ncaj qha rau qhov kub thiab txias, tshav ntuj, lossis lwm yam ib puag ncig.
Siv cov cuab yeej tsim nyog
Siv cov xaim rub cov roj nplaum kom txo tau kev sib txhuam thaum lub sijhawm teeb tsa, tshwj xeeb tshaj yog nyob rau hauv qhov chaw txias uas qhov rwb thaiv tsev yuav tsis hloov pauv.
Xaiv qhov Correct Wire Gauge
Kev kub siab dua tuaj yeem ua rau muaj kev tiv thaiv, yog li xaiv qhov ntsuas hluav taws xob tsim nyog yog qhov tseem ceeb kom tsis txhob muaj cua sov.
Qhov zoo ntawm THHN Hlau nyob rau hauv huab Environments
1. Kev kub siab ua haujlwm siab
Qhov ntsuas 90 degree hauv qhov chaw qhuav ua rau THHN hlau haum rau ntau yam kev siv.
2. Abrasion Resistance
Cov txheej nylon ua kom ntseeg tau tias cov hlau tseem muaj kev tiv thaiv thaum lub sijhawm teeb tsa thiab ua haujlwm, txawm tias nyob rau hauv cov xwm txheej nyuaj.
3. Ntau yam
THHN hlau yuav siv tau nyob rau hauv ob qho tib si siab thiab qis-kub ib puag ncig nrog kev ceev faj kom raug.
Kev txwv ntawm THHN Hlau nyob rau hauv qhov kub thiab txias
Brittle Rwb thaiv tsev nyob rau hauv cov xwm txheej khov
PVC rwb thaiv tsev tuaj yeem tawg yog tias ua yuam kev hauv qhov chaw txias heev.
Txo Ampacity nyob rau hauv siab kub
Ntev ntev raug rau qhov kub thiab txias yuav tsum tau ceev faj de-rating kom tsis txhob overheating.
Tsis zoo rau qhov chaw ntub dej
Thaum tiv taus dampness, THHN hlau tsis raug ntsuas rau kev siv txuas ntxiv hauv qhov chaw ntub dej tshwj tsis yog cim tias yog THWN-2.
Lwm hom hlau rau cov xwm txheej heev
Yog tias qhov chaw teeb tsa nthuav tawm cov xwm txheej dhau lub peev xwm ntawm THHN hlau, xav txog cov kev xaiv no:
XHHW-2 Wire
Superior low-temperature flexibility thiab high-temperature performance, ua rau nws zoo tagnrho rau qhov chaw hnyav.
THWN -2 Hlau
Haum rau ob qho tib si ntub thiab qhuav ib puag ncig, nrog rau qhov ntsuas kub txog li 90 degree hauv txhua qhov xwm txheej.
MTW Hlau (Machine Tool Wire)
Tsim los rau kev hloov pauv siab thiab ua haujlwm rau cov roj, noo noo, thiab cua sov, feem ntau siv rau hauv chaw tsim khoom.