1. NEC Cov Qauv: Yam koj yuav tsum paub
Lub nec, kho txhua peb lub xyoos, cov ntsiab lus yuav tsum muaj rau cov hluav taws xob daws kom tiv thaiv cov phom sij thiab hluav taws xob. Cov Ntsiab Lus Tseem Ceeb muaj:
Kev Ntsuas Kub: Cov xov hlau yuav tsum tiv thaiv kom sov.
Rwb thaiv tsev kev koom siab: Kev tiv thaiv tiv thaiv ya raws, tshuaj lom neeg, thiab kev puas tsuaj lub cev.
Roj hmab: Kev nqa khoom tam sim no yam tsis muaj overheating.
XHhw xaim sib ntsib los yog tshaj li cov qauv no, ua rau nws txoj kev xaiv nec-ua raws cai rau cov chaw muaj ntau yam. Nws txoj kev pom zoo nyob rau hauv nec tshooj 310, 338, thiab 340 lees paub nws cov kev haum rau ob qho tib si sab hauv thiab sab nraum zoov thaum muaj teeb tsa sab nraum zoov.
2. XHhw Hlau: Siv thiab Khoom Siv
Xhhw sawv rauCross-txuas Polyethylene (XLPE) Muaj Kub-resistant Dej-resistantCov. Qhov kev rwb thaiv tsev muaj zog no ua rau cov hlau ua hauv cov xwm txheej xav tau. Cia peb tsoo nws cov khoom:
2.1 tooj liab xhhw xaim
Tus coj nkauj: High-purity tooj liab muaj kev coj zoo tshaj plaws (100% IROSS) thiab corrosion tsis kam.
Kev rwb thaiv tsev: XLPE muab lub zog dielectric ntawm 1.2 kV / mil thiab kev khiav dej num ntawm qhov kub thiab txias txog 90 degree hauv cov lus ntub / qhuav (nec rooj 310.16).
Cov Ntawv Thov: Qhov zoo tagnrho rau cov feeder circuits, tswj vaj tse, thiab cov tsev lag luam uas ua tau zoo thiab ntev yog qhov tseem ceeb.
2.2 Txhuas Xhhw
Tus coj nkauj: Alloy Alloy (Aa {{-8000 series) txo qhov hnyav thiab raug nqi thaum tswj tus tooj liab.
Nec ua raws li: NEC 310.14 Kev Pom Zoo Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Hlau Hauv Qhov Loj me (piv txwv li, 8 AWG thiab loj dua) rau cov ceg nruab nrab thiab pub mis.
Siv cov ntaub ntawv: Cov phiaj xwm muaj cov txheej txheem loj, cov hnub ua liaj ua teb, thiab cov nyiaj laus uas muaj teeb meem uas muaj teeb meem kev txuag nyiaj.
2. {{3 8 AWG XHhw Hlau 600V
Lub npe nrov rau cov ntawv thov cov dej num nruab nrab, 8 AWG XHHW 600V Hlau Stalances Ampacity (40-55s, nyob ntawm rwb thaiv tsev) thiab hloov tau. Nws 600V Ntsuas ua ke nrog NEC Voltage Tso cov lus qhia rau cov chaw nyob thiab lub teeb lag luam lag luam lag luam.
3. Xhhw vs. Thhn: uas tau raws NEC cov qauv?
Ob leeg xhhw thiabThhn (thermoplastic high kub-resistant nylon-txheej)Puas yog nec-pom zoo, tab sis lawv cov teeb meem sib txawv:
| Yam zoo | Xhhw | Hwj chim |
|---|---|---|
| Kev rwb thaiv tsev | Xlpe (hla-txuas polyethylene) | PVC Nrog Nylon Tsho |
| Max kub | 90 degree (ntub dej / qhuav) | 90 degree (qhuav), 75 degree (ntub) |
| Ya raws tsis kam | Zoo heev (dej-resistant) | Nruab Nrab (Nylon tawm kev puas tsuaj) |
| Cov Ntawv Thov | Cov chaw ntub dej, kev faus neeg | Cov Khoom Siv Hauv Tsev Sab Hauv Tsev, Tshuab Cov cuab yeej |
Tseem Ceeb Takaway: Xhhw excrels hauv noo lossis corrosive ib puag ncig, thaum thhn suits qhuav, siab-flex chaw. NEC 310.10 (c) Ua kom XHHW rau qhov chaw ntub vim nws cov rwb thaiv tsev zoo dua.
4. Qhov zoo ntawm XHHW hlau rau NEC ua raws
4.1 Cov Kev Ua Haujlwm Zoo Dua
XLPE rwb thaiv tsev tiv thaiv:
Dej So(Tseem ceeb rau sab nraum zoov lossis hauv av siv ib nec 300.5).
Kev Siv Tshuaj(roj, roj, cov kuab tshuaj).
Kev laus thiab ozone degradation, kom ntseeg tau lub neej ntawm 30+ xyoo.
4.2 yooj thiab yooj yim ntawm kev teeb tsa
Txawm hais tias nws ruggedness, xhhw tseem pliable. Piv txwv li,8 AWG Tooj Liab XhhwKhoov du qha nyob rau hauv conduit tau sau, txo lub sijhawm ua haujlwm.
4.3 tus nqi nyiaj tau zoo
Aluminium XHHWTxiav cov nqi khoom los ntawm 50% vs. tooj liab, tsis muaj kev foob rau Nec raws li kev ua raws.
Lub sij hawm ntev txuag tau los ntawm kev saib xyuas thiab hloov pauv.
5. Cov ntawv thov ntawm XHHW HLAU NYOB RAU NEC Cov Lus Qhia
Nec-raws cov kev siv suav nrog:
Muaj Nroj Tsuag: Tshuab, cov motors, thiab tswj cov tshuab (NEC 430).
Txuas lub zog txuas ntxiv: Hnub Ci Arrays thiab Cua Turbines (Nec 690).
Lub tsev lag luam: Cov kab yug thiab HVAC (NEC 310.15 (b) (16)).
Cov chaw ntub dej: Cov chaw nres tsheb twj tso kua mis, marinas, thiab iC 300.9).
6. Txhim kho cov kev coj ua zoo tshaj plaws rau kev ua raws
Conduit co yuav tsum tau: Siv PVC, RMC, lossis EMT Conduits As per nec tshooj 3.
Ampacity Tso: Kho rau ambient kub (nec 310.15 (b) (2)) thiab conduit sau (nec rooj 310.15 (b) (3) (a)).
Kev txiav: Siv tshuaj tiv thaiv oxidant rauAluminium XHHWTxhawm rau tiv thaiv galvanic corrosion (nec 110.14).
7. Vim li cas thiaj xaiv XHHW hla lwm cov xov hlau uas tau pom zoo?
Versatility: Ua haujlwm nyob rau hauv -40 degree rau 90 cov chaw ib puag ncig.
Kev xyuas xim: Nplaim taws-rwb thaiv tsev (UL 44/83 lees paub).
Yav Tom Ntej-Ntawv Pov Thawj: Tau tshaj nrog Smart Daim phiaj thiab High-voltage Systems.
Dongguan Ntau Ntau Hlau & Cable Co., Ltd.Muaj cov rhiav ntau lawm thiab cov cuab yeej siv ntau lawm, thiab tuaj yeem tsim khoom 1.3 lab meters ntawm cov cable zoo hauv ib hlis. Tus pab pawg R & D Qhov kev tshawb fawb hauv peb cov qauv kev ua lag luam thiab cov tseev kom muaj thiab txhim kho cov khoom lag luam txuas ntxiv. Peb tus thhn xaim, xhhw, tc-er cable thiab lwm yam khoom tau dhau Ul83, ul44, ul1277 thiab lwm yam ntawv pov thawj, thiab muaj cov khoom pov thawj zoo. Nyob rau hauv cov nqe lus ntawm nqe, vim muaj kev tshaj tawm loj thiab muaj txiaj ntsig zoo, peb tuaj yeem muab cov neeg siv khoom Asmeskas Asmeskas nrog cov khoom lag luam uas muaj 25% qis dua li tus nqi lag luam nruab nrab. Peb yog koj tus khub zoo rau kev koom tes ntev.