Resistance wire yog xaim los ua cov hluav taws xob tiv thaiv hluav taws xob (uas yog siv los tswj cov nqi tam sim no hauv Circuit Court). Nws yog qhov zoo dua yog tias cov hlau siv tau muaj kev tiv thaiv siab, txij li cov hlau luv tuaj yeem siv tau. Nyob rau hauv ntau lub sijhawm, kev ruaj ntseg ntawm cov resistor yog qhov tseem ceeb, thiab yog li alloy qhov kub coefficient ntawm resistivity thiab corrosion kuj ua si ib feem loj ntawm cov khoom xaiv.

Thaum cov hlau tsis kam siv rau cov khoom cua sov (hauv lub tshuab hluav taws xob, lub tshuab hluav taws xob, thiab lwm yam), kev ua haujlwm siab thiab oxidation kuj tseem ceeb.

Qee zaum cov hlau tsis kam yog insulated los ntawm ceramic hmoov thiab sheathed nyob rau hauv ib lub raj ntawm lwm alloy. Cov cua kub zoo li no yog siv rau hauv qhov cub hluav taws xob thiab lub tshuab rhaub dej, thiab hauv cov ntawv tshwj xeeb rau cooktops.
Hlauhlua yog ob peb strands ntawm cov hlau hlau twisted rau hauv ib lub helix ua ib qho kev sib xyaw "txhim", nyob rau hauv ib tug qauv hu ua "txhim hlua". Loj txoj kab uas hla hlau hlua muaj ntau cov hlua ntawm cov hlua nteg hauv cov qauv hu ua "kabua”.

Cov hlua hlau rau cov hlua hlau yog ib txwm ua los ntawm cov hlau tsis muaj hlau nrog cov ntsiab lus carbon ntawm 0.4 txog 0.95%. Lub zog siab heev ntawm cov hlua hlau ua rau cov hlua hlau los txhawb lub zog tensile loj thiab khiav hla sheaves nrog me me diameters.

Nyob rau hauv lub thiaj li hu ua cross lay strands, cov xov hlau ntawm cov txheej txheem sib txawv. Nyob rau hauv feem ntau siv parallel lay strands, nteg ntev ntawm tag nrho cov hlau khaubncaws sab nraud povtseg yog sib npaug zos thiab cov nyob ntawm tej ob txheej superimposed yog parallel, uas ua rau linear sib cuag. Cov xaim ntawm txheej txheej yog txhawb los ntawm ob lub xov hlau ntawm cov txheej sab hauv. Cov xov hlau no yog cov neeg nyob sib ze raws tag nrho qhov ntev ntawm txoj hlua. Parallel lay strands yog ua nyob rau hauv ib qho kev ua haujlwm. Qhov kev ua siab ntev ntawm cov hlua hlua nrog cov hlua zoo li no ib txwm muaj ntau dua li ntawm cov (tseem siv tau) nrog ntoo khaub lig lay strands. Parallel nteg strands nrog ob txheej hlau muaj kev tsim kho Filler, Seale lossis Warrington.

Nyob rau hauv txoj cai, kauv ropes yog puag ncig strands raws li lawv muaj kev sib dhos ntawm cov khaubncaws sab nraud povtseg ntawm cov xov hlau nteg helically hla ib qho chaw nrog tsawg kawg ib txheej ntawm cov xov hlau raug nteg nyob rau hauv qhov opposite kev taw qhia rau cov txheej txheej. Kauv ropes tuaj yeem ua kom ntev li qhov uas lawv tsis tig uas txhais tau hais tias nyob rau hauv qhov nro ntawm txoj hlua torque yog zero. Txoj hlua qhib kauv tsuas muaj cov xov hlau puag ncig xwb. Cov hlua khi ib nrab thiab cov hlua khi tag nrho cov hlua khi ib txwm muaj qhov chaw ua los ntawm cov xov hlau puag ncig. Cov hlua khi hlua khi muaj ib lossis ntau txheej txheej ntawm cov xov hlau. Lawv muaj qhov zoo dua tias lawv cov kev tsim kho tiv thaiv kev nkag mus ntawm av thiab dej kom ntau dua thiab nws kuj tiv thaiv lawv los ntawm kev poob ntawm cov roj nplua nyeem. Tsis tas li ntawd, lawv muaj ib qho txiaj ntsig tseem ceeb ntxiv vim qhov kawg ntawm cov hlau tawg sab nraud tsis tuaj yeem tawm ntawm txoj hlua yog tias nws muaj qhov loj me.

Stranded hlau yog tsim los ntawm ib tug xov tooj ntawm cov xov hlau me me bundled los yog qhwv ua ke los tsim ib tug loj conductor. Stranded hlau yog hloov tau yooj yim dua li cov khoom siv hlau ntawm tib qhov chaw hla ntu. Stranded hlau yog siv thaumsiab duarau hlau qaug zog yog yuav tsum tau. Cov xwm txheej zoo li no suav nrog kev sib txuas ntawm cov rooj sib tham hauv Circuit Court hauv ntau cov khoom siv hluav taws xob-circuit-board, qhov twg cov khoom siv hlau yuav ua rau muaj kev ntxhov siab ntau dhau los ntawm kev txav mus los thaum sib dhos lossis kev pabcuam; AC kab hlua rau cov khoom siv; suab paj nruagkabs; computer nas cables; vuam electrode cables; tswj cables txuas cov tshuab txav txav; mining tshuab cables; trailing tshuab cables; thiab ntau lwm tus.

Ntawm cov frequencies siab, tam sim no mus nyob ze ntawm qhov chaw ntawm cov hlau vim yog cov nyhuv ntawm daim tawv nqaij, ua rau muaj zog poob hauv cov hlau. Stranded hlau tej zaum yuav zoo li yuav txo tau cov nyhuv no, vim hais tias tag nrho cov saum npoo ntawm cov strands yog ntau tshaj qhov chaw ntawm cov khoom sib npaug, tab sis zoo tib yam stranded hlau tsis txo cov nyhuv ntawm daim tawv nqaij vim hais tias tag nrho cov strands yog luv luv-circuited ua ke thiab coj tus cwj pwm. raws li ib tug neeg xyuas pib. Ib txoj hlua khi yuav muajsiab duadua li ib qho khoom hlau ntawm tib txoj kab uas hla vim qhov hla ntawm cov hlua khi tsis yog txhua tus tooj liab; muaj qhov sib txawv ntawm qhov sib txawv ntawm cov strands (qhov no yog lub voj voog ntim teeb meem rau cov voj voog hauv ib lub voj voog). Ib txoj hlua khi nrog tib ntu ntu ntawm tus neeg xyuas pib raws li cov khoom siv xaim tau hais kom muaj qhov sib npaug sib npaug thiab ib txwm yog txoj kab uas hla loj dua.

Txawm li cas los xij, rau ntau qhov kev siv ntau zaus, cov nyhuv sib thooj yog qhov hnyav dua li cov nyhuv ntawm daim tawv nqaij, thiab hauv qee qhov kev txwv, cov hlua khi yooj yooj yim tuaj yeem txo qhov sib thooj. Rau kev ua tau zoo dua ntawm qhov siab zaus, litz hlau, uas muaj ib tus neeg strands insulated thiab twisted hauv cov qauv tshwj xeeb, yuav siv tau.
Qhov ntau tus neeg xaim hlua nyob rau hauv ib lub hnab xaim, qhov hloov tau yooj yim, kink-resistant, tawg-resistant, thiab muaj zog ntawm cov hlau ua. Txawm li cas los xij, ntau txoj hlua ua rau kev tsim khoom nyuaj thiab nqi.

Rau cov laj thawj geometrical, tus lej qis tshaj plaws feem ntau pom yog 7: ib qho hauv nruab nrab, nrog 6 nyob ib puag ncig nws nyob ze. Cov qib tom ntej yog 19, uas yog lwm txheej ntawm 12 strands nyob rau sab saum toj ntawm 7. Tom qab ntawd tus lej sib txawv, tab sis 37 thiab 49 muaj ntau, tom qab ntawd nyob rau hauv 70 mus rau 100 ntau yam (tus lej tsis yog lawm). Txawm tias cov lej loj dua li feem ntau pom tsuas yog hauv cov kab loj loj.

Rau daim ntawv thov qhov twg cov hlau txav mus, 19 yog qhov qis tshaj plaws uas yuav tsum tau siv (7 yuav tsum tsuas yog siv rau hauv cov ntawv thov uas cov xaim tso thiab tsis txav), thiab 49 yog qhov zoo dua. Rau cov ntawv thov nrog kev txav mus tas li, xws li kev sib dhos robots thiab lub mloog pob ntseg, 70 txog 100 yog qhov yuav tsum tau ua.

Rau cov ntawv thov uas xav tau kev hloov pauv ntau dua, txawm tias siv cov hlua txuas ntxiv (vuam cables yog qhov piv txwv li niaj zaus, tab sis kuj yog txhua daim ntawv thov uas yuav tsum tau txav cov hlau hauv qhov chaw nruj). Ib qho piv txwv yog 2/0 hlau ua los ntawm 5,292 strands ntawm #36 gauge hlau. Cov strands raug teeb tsa los ntawm thawj zaug tsim ib pob ntawm 7 strands. Tom qab ntawd 7 ntawm cov pob khoom no muab tso ua ke rau hauv cov pob khoom super. Thaum kawg, 108 super bundles yog siv los ua qhov kawg cable. Txhua pawg ntawm cov xov hlau raug mob rau hauv lub helix kom thaum cov hlau yog flexed, ib feem ntawm ib lub nras uas yog stretched txav ib ncig ntawm lub helix mus rau ib feem uas yog compressed kom cov hlau tsis muaj kev ntxhov siab.