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20AWG 3 core
Zhong Hua Jiang
20 AWG
5m-5000m
3
Tinned stranded tooj liab
PVC (RoHS)
300 V
80 ℃ / 176 ℉
40.1Ω / KM20 ℃
10MΩ / KM20 ℃
2000 AC V / min
Zhong Hua Jiang 20AWG 3-conductor shielded drag chain cable yog tsim los rau CNC tshuab-tswj xov hlau, muaj kev sib txuas sensor thiab automation khoom siv uas yuav tsum tau peb tus kheej insulated conductors routed los ntawm ib tug txav cable cab kuj. Lub cable tau piav qhia tias muaj qhov sib tw tinned-tooj liab cores, PVC rwb thaiv tsev, lub tsho PVC sab nrauv thiab kev tsim kho kev tiv thaiv rau kev tswj cov hluav taws xob cuam tshuam.
Cov ntawv tshaj tawm kev qhia tshwj xeeb qhia txog 300V qhov ntsuas hluav taws xob, qhov ntsuas kub ntawm 80 ° C (176 ° F) thiab lub tsho dav dav ntawm 6.9 ± 0.3mm. Ntsuas tus neeg xyuas pib suav, kev khiav hauj lwm tam sim no, cable khiav ntev, tshuab xov kab kos, ib puag ncig raug thiab rub-chain txav ua ntej xaiv lub cable.
Cov kev tsim kho tshwj xeeb muaj peb cov insulated, twisted tinned-stranded tooj liab conductors nyob rau hauv PVC-insulated, PVC-jacketed shielded cable. Cov lus qhia tseem sau cov hlua paj rwb thiab paj rwb ntawv raws li kev sau sab hauv. Tau txais cov qauv tshwj xeeb ntu kos duab kom paub meej tias tag nrho kev tshuaj ntsuam kev tsim kho, txoj kev txiav tawm thiab kev teeb tsa sab hauv.
Rau OEM kev koom ua ke lossis hloov cov xaim, sib piv cov naj npawb thiab kev ua haujlwm ntawm txhua tus tub ntxhais insulated, cov cim xim, cov ntaub thaiv npog, lub caj pas lossis cov khoom sib txuas haum, qhov ntsuas hluav taws xob, tso cai txav lub vojvoog thiab cov khoom siv mounting ib puag ncig.
Thov ib tug Quote rau 20AWG 3-Core Shielded Cable
CNC builders, industrial automation integrators, kho kev khiav hauj lwm thiab distributors tuaj yeem ntsuas qhov no 20AWG × 3 shielded cable rau tau tshaj peb-xaim sensor thiab tswj kev sib txuas uas yuav tsum tau mus rau hauv ib tug saj zawg zog cable cab kuj.
Ib qho kev teeb tsa tsim nyog tag nrho tuaj yeem pab txo cov suab nrov electromagnetic txuas rau hauv kev tswj cov kab hluav taws xob. Siv CNC maub los thiab hluav taws xob tsav cov chaw tsim khoom cov lus pom zoo rau cov ntaub thaiv npog thiab kev sib cais los ntawm cov khoom siv hluav taws xob inverter. Tsis txhob kho tag nrho cov ntaub thaiv npog raws li ib qho ntxiv insulated conductor los yog kev tiv thaiv-lub ntiaj teb hloov.
Kev nug txog kev yuav khoom muaj txiaj ntsig txheeb xyuas tus qauv 20AWG × 3, xav tau cable lossis reel lengths, kwv yees kom muaj nuj nqis, tshuab lossis sensor hom, kev teeb tsa, txoj kev xav tau saws, kev khiav hauj lwm voltage / tam sim no thiab txhua qhov yuav tsum tau kos duab, qhia lossis tshaj tawm.
| Rated voltage: | 300 V | Number of conductors: | 3 Twisted |
| Rated Kub: | 80 ° C / 176 ° F | Loj: | 20 AWG |
| Conductor Resistance: | 40.1 Ω / km ntawm 20 ° C (raws li luam tawm; thov kom paub tseeb tiv thaiv) | Cov khoom siv conductor: | Tinned Stranded tooj liab |
| Rwb thaiv tsev Resistance: | 10MΩ / KM 20 ° C | Cov khoom siv rwb thaiv tsev: | PVC (RoHS) |
| Dielectric Test: | 2000 AC V / min | Khoom siv cais: | Paj rwb hlua thiab paj rwb ntawv |
| Khoom siv: | PVC + Tinned tooj liab | Jacket Khoom siv: | PVC (RoHS) |
| Conductor Xim: | Dub, Dawb, Daj thiab Ntsuab | ||
| Jacket Dia (mm): | 6.9 ± 0.3 | ||
Daim ntawv luam tawm tus neeg xyuas pib-tsis kam yog 40.1 Ω / km ntawm 20 ° C. Nug rau daim ntawv qhia txog cov qauv tshwj xeeb cable tam sim no thiab tus neeg xyuas pib-kuj ntsuas thaum npaj lub zog hluav taws xob poob lossis sib piv cov ntsuas. Cov dielectric-test thiab rwb thaiv tsev-ua haujlwm kuj xav tau kev pom zoo ua ntej kev pom zoo tsim.
Cov duab xa khoom xa mus rau UL thiab cov ntaub ntawv cov ntaub ntawv siv RoHS. Txheeb xyuas cov npe khoom tshwj xeeb, daim ntawv pov thawj lossis tshaj tawm, suav nrog cov qauv siv tau thiab tus lej qauv, ua ntej tso siab rau cov ntaub ntawv no.
Thov 20AWG 3-Core Technical Specification
| UL Cov ntaub ntawv: Txheeb xyuas los ntawm Cable Model | 15 lab Flex Cycles - Test Conditions ntawm Kev Thov | Tiv thaiv | Tinned Copper Core |
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| Oxidation Resistance | Tsawg Eccentricity | High conductivity | Rwb thaiv tsev Resistant |
Cov duab tshaj tawm tshaj tawm hais txog 15 lab flex cycles. Qhov tseeb durability nyob ntawm tus qauv kuaj, dynamic khoov vojvoog, lub voj voog ceev, kev mus ncig thiab kev teeb tsa. Thov cov ntaub ntawv xeem uas siv tau ua ntej qhia cov duab no hauv lub tshuab tsim.
Rau kev txav cov kab hluav taws xob, xyuas cov chaw tsim khoom siv hluav taws xob tau tso cai dynamic dabtsi yog khoov vojvoog, yam tsawg kawg nkaus kev tshem tawm, kev mus ncig ceev thiab kev taw qhia kev pab cuam. Jacket txoj kab uas hla ib leeg tsis tsim kom muaj qhov tsawg kawg nkaus khoov vojvoog.
Qhov tshwj xeeb 6.9 ± 0.3mm sab nraud txoj kab uas hla yog cuam tshuam rau cable gland sealing, connector nkag thiab cable-carrier filling. Paub meej tias cov qauv kev kos duab thiab kev txav txav tshwj xeeb ua ntej ua tiav cov nqi tshuab ntawm cov ntaub ntawv.
| Qhov zoo ntawm Tinned Copper | |||
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| Tinned Copper | Ntshiab tooj liab | CCA Copper Clad Aluminium | |
| Yooj yim rau Solder |  |
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| Copper conductor Performance | |
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| Application-Dependent Durability | |
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Cov tinned-tooj liab strands yog npaj rau kev txhim khu kev qha kev sib txuas thiab cov tswv yim solder termination. Tin plating tuaj yeem txhim kho oxidation tsis kam ntawm qhov chaw raug strand thaum piv nrog liab qab tooj liab.
Lub neej kev pab cuam ntawm lub cable txav nyob ntawm qhov ua tiav tus neeg xyuas pib, daim thaiv npog, muab tub lim thiab lub tsho tsim kho, nrog rau nws cov hlua txuas txuas thiab kev ua haujlwm.
Rau kev tsim hluav taws xob tsim hluav taws xob thiab kev kwv yees hluav taws xob poob, thov cov ntaub ntawv pov thawj cov neeg xyuas pib-tsis kam rau qhov tseeb 20AWG qauv thiab suav cov hluav taws xob txoj kev ntev raws li qhov tseeb sensor lossis tswj Circuit Court.
Cov ntaub thaiv npog raug txiav tawm kom raug tuaj yeem pab txo cov kev cuam tshuam ntawm electromagnetic cuam tshuam los ntawm cov motors nyob ze, tsav thiab hloov khoom siv.
Ua raws li kev pom zoo ntawm tus maub los grounding thiab shield-termination cov lus qhia. Khaws cov kab hluav taws xob qis qis qis sib cais los ntawm lub suab nrov dua VFD cov hluav taws xob tso tawm hluav taws xob uas cov cuab yeej tsim tau qhia txog kev sib cais.
Cov ntaub thaiv npog yog qhov ntsuas electromagnetic cuam tshuam. Txhua qhov kev tiv thaiv-lub ntiaj teb tus neeg xyuas pib yuav tsum txaus siab rau lub tshuab thaiv kev tsim thiab siv cov qauv ntawm nws tus kheej ntawm qhov screen.
Cov kev pabcuam Dynamic xav tau ntau dua li cov lus qhia flex-cycle. Txheeb xyuas lub tshuab nqa nqa lub vojvoog, kev mus ncig ceev thiab kev ncua deb, kev teeb tsa kub, kev sib cais cable thiab txoj kev txiav tawm nrog cov ntaub ntawv kuaj cable.
Sib tham txog Cable Carrier Installation Requirements
Peb cov cores insulated tej zaum yuav raug txiav txim siab rau kev sib txuas ntawm peb-xaim industrial sensor circuits, CNC tswj thaiv thaiv thiab kev sib txuas sib txuas uas hu rau kev tshuaj ntsuam txav mus.
Cov ntawv thov muaj peev xwm suav nrog peb-xaim txoj hauj lwm sensors, xws li teeb liab sib txuas thiab lwm yam automation circuits hauv CNC routers lossis txav tshuab. Tshawb xyuas txhua tus pin txoj haujlwm, voltage, load tam sim no, teeb pom kev sib raug zoo thiab kev nyab xeeb yuav tsum tau ua.
Peb-ntxhais kev tsim kho tsis tau txais kev tsim nyog rau cable rau ib qho encoder, cov lus tsa suab-tswj lub tsheb npav, RS-485 network lossis VFD-rau-spindle motor tso zis. Txheeb xyuas cov khoom siv cabling uas yuav tsum tau muaj, cable impedance qhov twg muaj feem xyuam, tsim daim thaiv npog, kev ntsuas tus neeg xyuas pib thiab pom zoo grounding.
Rau cov lag luam wholesale lossis OEM xaj, qhia peb lub sijhawm xaim hluav taws xob, thov kom ntev thiab ntim, cov tshuab sib dhos, kev npaj rub-chain txav, cov ntsiab lus txiav tawm, ib puag ncig kev teeb tsa thiab cov qauv tshwj xeeb cov ntaub ntawv yuav tsum tau ua.
Xaiv tus neeg xyuas pib suav raws li daim duab qhia qhov tseeb, tsis yog qhov kab kab kab. Ib tug peb-core screened cable muaj peb insulated conductors; lub vijtsam sab nraud tsis yog plaub tus neeg xyuas pib.
Tag nrho peb qhov kev tsim kho yog hais txog tus naj npawb ntawm cov insulated insulated cais. Ib tug peb-core version yuav haum rau tej yam sensor muab, teeb liab thiab xa rov qab kev twb kev txuas, raug rau cov khoom pinout. Xaiv tus xov tooj ntawm cov xov hlau uas xav tau los ntawm lub cuab yeej thiab ib qho kev tiv thaiv-lub ntiaj teb uas yuav tsum tau ua.
| Cable configuration | Tus naj npawb ntawm insulated conductors | Tej lus nug xaiv |
| 20 AWG × 2 | Ob | Puas yog lub voj voog siv tsuas yog ob txoj kab hluav taws xob? |
| 20 AWG × 3 | Peb | Puas yog daim duab kos duab pom zoo xav tau peb txoj hauv kev? |
| 20 AWG × 4 | Plaub | Puas yog lub Circuit Court yuav tsum muaj plaub txoj hauv kev insulated? |
Tshaj tawm tag nrho cable txoj kab uas hla yog 6.9 ± 0.3mm. Txheeb xyuas cov khoom nkag, cable caj pas clamping qhov ntev, rub-chain cable compartment clearance thiab cov chaw tsim khoom-pom zoo dynamic khoov vojvoog.
Cov xim tseem ceeb uas tau teev tseg yog xim dub, dawb, thiab daj / ntsuab. Txheeb xyuas qhov kev teeb tsa no rau ntawm daim duab kos npe pom zoo. Qhov twg daj / ntsuab yog tshwj tseg rau kev tiv thaiv av raws li cov qauv siv tau, tsis txhob muab nws rau lwm qhov kev ua haujlwm hauv Circuit Court.
Rau lub suab nrov-sensitive CNC sensors, ua raws li cov kev taw qhia ntawm cov maub los rau kev tshuaj ntsuam kab thiab kev sib txuas. Sib cais kev tshuaj ntsuam xyuas coj los ntawm lub cev muaj zog-tso tawm thaiv raws li xav tau. Paub meej tias cov khoom tsim nyog rau cov qauv teeb liab npaj es tsis yog kev tiv thaiv ib leeg ua kom muaj kev sib haum xeeb.
Xa koj cov kev xav tau ntawm peb-Core Cable
Zhong Hua Jiang tseem teev cov hlua khi hlua khi thiab ob-tsim hluav taws xob cable pawg. Xaiv tsev neeg raws li qhov teev cov tseem ceeb suav, tus neeg xyuas pib ntsuas, thaiv kev tsim kho, cable motion, system suab nrov thiab cov khoom yuav tsum tau ua.
Huajiang tau tsim nyob rau xyoo 2000, pib nrog CNC engraving spindle motors thiab tom qab ntawd tsim VFDs, CNC tshuab, accessories thiab hluav taws xob cables. Zhong Hua Jiang hom tau qhia hauv 2018 rau cov neeg siv khoom thoob ntiaj teb.
Lub tuam txhab muaj ntau tshaj 20 xyoo ntawm kev paub nyob rau hauv CNC cov khoom thiab cites tsim patent No. Rau kev yuav khoom siv hluav taws xob, thov cov ntaub ntawv siv tau rau tus lej tshwj xeeb cable.
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| Quality Assurance Superior quality performance Strict quality control | Patents thiab Certifications Ob peb patents rau cua txias spindle motors | Ntxiv Brand Value Brand tus nqi tau lees paub los ntawm kev ua lag luam |
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| Tus nqi tsim nyog ncaj qha Hoobkas muag Cov nqi ua haujlwm siab | Full Time Service Professional technical support Ceev cov neeg siv khoom | Kev xa khoom sai thiab txhim khu kev qha Kev xa khoom sai thiab muaj txiaj ntsig ntawm lub sijhawm taug qab thiab hloov tshiab |
Lub tuam txhab muab cov qauv CNC router nrog rau 3018, 3020, 3040 thiab 6090 rau kev sib xyaw ua ke thiab kev ua haujlwm.
Nws cov khoom siv ntau yam suav nrog cua-txias thiab dej-txias CNC spindle motors haum rau cov tshuab sib txawv thiab cov txheej txheem txias.
Cov khoom siv CNC cuam tshuam suav nrog kev txwv kev hloov pauv, Z kev sojntsuam, cov khoom siv thaum muaj xwm txheej ceev thiab lwm yam khoom siv tswj hwm.
Cov xov hlau muaj xws li txav-siv shielded saw cable thiab lwm yam thaiv hluav taws xob thaiv rau kev sib txuas ntawm CNC tshuab sib txuas.
Stepper motors thiab lwm yam kev txav chaw ua haujlwm tau tshaj qhov chaw thiab automation systems.
Cov khoom lag luam, cov neeg sib koom ua ke, cov neeg xa khoom thiab cov xa khoom tuaj yeem xa lawv cov sijhawm yuav khoom, kos duab, xav tau cable ntev ib lub rooj sib dhos, xaj ntim, lo lus uas peb, cov ntsiab lus txuas thiab cable-carrier kev ua haujlwm rau kev tshuaj xyuas thiab kev hais lus.
Rau kev tsim nyog, thov tus qauv tshwj xeeb tus neeg xyuas pib teeb tsa, kev txheeb xyuas xim, kuaj kev tiv thaiv, thaiv kev tsim kho, kev pom zoo khoov vojvoog, flex-lub neej tej yam kev mob thiab cov lus tshaj tawm txog kev tswj hwm.
Thov OEM / Distributor Cable Nqe
Cov ntaub ntawv pov thawj thiab cov neeg siv khoom tuaj yeem cuam tshuam rau cov khoom sib txawv hauv lub tuam txhab ntau yam. Nug cov ntaub ntawv uas txheeb xyuas qhov tseeb peb tus neeg xyuas pib cable ib feem ntawm tus lej raug yuav.
Qhov no 20AWG peb-core shielded drag-chain cable yog nthuav tawm rau CNC tshuab thaiv, kev lag luam automation, sensors thiab txav cable cab kuj nyob qhov twg daim duab thaiv yuav tsum tau peb insulated conductors.
Shielded thaiv tej zaum yuav txo tau electromagnetic cuam tshuam thaum lub vijtsam tsev, kev sib cais cable thiab cov khoom siv hauv av raug tua raws li lub tshuab thiab cov khoom siv.
Cov khoom yog nthuav tawm rau kev ua haujlwm cable-chain. Cov lus qhia tsis muab tus lej tsawg kawg nkaus dynamic khoov vojvoog, ntsuas nrawm, acceleration lossis mus ncig. Tau txais cov nqi tsim nyog ua ntej pom zoo rov ua dua.
Cov ntawv tshaj tawm qhia txog peb qhov twisted 20AWG tinned stranded tooj liab conductors, PVC rwb thaiv tsev thiab lub tsho, 300V, 80 ° C, thiab ib tug 6.9 ± 0.3mm sab nraud txoj kab uas hla. Lub 40.1 Ω / km ntawm 20 ° C tus neeg xyuas pib-kuj tus nqi yuav tsum raug kuaj xyuas raws li daim ntawv qhia txog kev ntsuas tus qauv.
Daim ntawv teev cov xim tseem ceeb tshaj tawm yog Dub, Dawb, Daj thiab Ntsuab, pom meej qhia tias dub, dawb thiab ib lub hauv paus daj / ntsuab. Paub meej tias cov xim tiag tiag hauv cov khoom kos duab. Yellow/green conductor identification yog ua raws li cov kev cai tiv thaiv-lub ntiaj teb xim.
Tinned stranded tooj liab txhawb hluav taws xob conduction, solderability thiab tsis kam mus rau oxidation nto; rov ua dua-khoov muaj peev xwm kuj nyob ntawm lub tsho, tiv thaiv thiab txav tsis tau.
Sib tham txog kev thov cable ntev, ntim, xim xim lossis lwm yam kev xav tau OEM nrog tus neeg muag khoom thiab tau txais kev pom zoo ua ntej hloov qhov kev txiav txim.
Rau cov lus hais, muab 20AWG × 3, kev txiav txim ntim, xav tau ntev, tshuab lossis sensor thaiv daim duab, kev khiav hauj lwm voltage / tam sim no, cable-carrier qhov ntev, connector lossis caj pas yuav tsum thiab lo lus uas peb.
Huajiang pib nrog CNC spindle motor ntau lawm hauv 2000 thiab nthuav dav rau hauv cov cuab yeej siv tshuab, VFDs, accessories thiab hluav taws xob cabling. Zhong Hua Jiang hom tau tsim nyob rau hauv 2018 rau kev lag luam thoob ntiaj teb.
Nws yog ib tug shielded hluav taws xob cable nrog peb twisted 20AWG insulated tinned-stranded tooj liab conductors thiab PVC rwb thaiv tsev thiab lub tsho rau sib txuas tshuab thaiv.
Cov chaw tsim khoom-tshaj tawm sab nraud yog 6.9 ± 0.3mm. Tshawb xyuas cov kev kos duab rau lub caj pas nkag thiab cov cab cab cab tshem tawm.
Cov lus tshaj tawm qhia tau hais tias 300V thiab 80 ° C (176 ° F). Lub installation thiab load-tam sim no yuav tsum tau kuaj xyuas nyias.
Cov khoom lag luam luam tawm cov ntawv teev npe 40.1 Ω / km ntawm 20 ° C. Tau txais cov ntaub ntawv xeem lossis daim ntawv pov thawj cable uas pom zoo rau cov qauv no ua ntej siv tus nqi ntawd hauv kev suav hluav taws xob.
Dub, dawb thiab daj / ntsuab tau teev tseg. Paub meej tias cov xim daj / ntsuab txhais tau hais tias tus neeg xyuas pib muaj kab txaij thiab txheeb xyuas lub sijhawm xaim kawg.
Tsis txhob rov muab nws dua qhov twg daj/ntsuab yog tshwj tseg rau kev tiv thaiv lub ntiaj teb los ntawm cov qauv siv txuas. Siv lub tshuab hluav taws xob tsim hluav taws xob pom zoo thiab cov chaw tsim khoom cov cim qhia tseem ceeb.
Ib tug peb-core cable muaj peb insulated conductor paths es tsis txhob ntawm ob. Xaiv tus naj npawb uas xav tau los ntawm lub sensor lossis tus tswj lub davhlau ya nyob twg daim duab.
Thaum daim duab sib txuas xav tau plaub txoj kev sib cais, xaiv qhov kev pom zoo plaub-ntxhais kev tsim kho es tsis yog sim siv cov ntaub thaiv npog ua lwm tus neeg xyuas pib.
Nws yog kev lag luam rau kev siv cov saw hlau, tab sis qhov kev pom zoo dynamic khoov vojvoog, cov neeg nqa khoom mus ncig, txav ceev thiab kev sim kev tsim kho yuav tsum raug txheeb xyuas qhov tseeb.
Tus lej dynamic dabtsi yog khoov vojvoog tsis tau teev nyob rau hauv lub rooj tshaj tawm. Thov kom muaj kev txwv kev teeb tsa txhawb nqa los ntawm cov chaw tsim khoom cov ntaub ntawv.
Cov khoom illustrations tso saib no flex-cycle daim duab tsis tau txhais nws cov kev xeem. Thov cov ntaub ntawv ntsuam xyuas cuam tshuam ua ntej kho cov duab raws li lub neej kev pab cuam.
Stranding txhim kho cov kab hluav taws xob hloov tau yooj yim piv rau cov xaim hlau, thaum lub tin txheej tuaj yeem pab tiv thaiv oxidation ntawm qhov chaw thiab kev txiav tawm.
Ib qho kev teeb tsa tsim nyog thiab kev sib koom ua ke tuaj yeem txwv cov suab nrov ua ke. Kev tiv thaiv kev ua tau zoo nyob ntawm kev txiav tawm, routing thiab lub tshuab hluav taws xob ib puag ncig.
Tsis yog. Nws tsis yog ib qho ntxiv insulated core thiab tsis tuaj yeem hloov qhov kev tiv thaiv-lub ntiaj teb tus neeg xyuas pib xav tau los ntawm cov khoom siv kev nyab xeeb tsim.
Tsis txhob xav li ntawd. VFD lub cev muaj zog-tso zis cables yuav tsum tau xaiv los ntawm lub cev muaj zog tam sim no, tsav hluav taws xob, tus neeg xyuas pib hla ntu, EMC thiab kev tiv thaiv lub ntiaj teb.
Nws tuaj yeem raug soj ntsuam rau cov sensors sib xws yog tias qhov hluav taws xob, tus neeg xyuas pib ua haujlwm, cov teeb liab hom, kev sib txuas tsim thiab kev ntsuas tam sim no phim cov lus qhia ntaus ntawv.
Cov lus tshaj tawm tsis muaj pov thawj cov yam ntxwv impedance lossis cov ntaub ntawv tshwj xeeb ntawm encoder. Txheeb xyuas cov txheej txheem thiab cov khoom siv cable uas yuav tsum tau ua ua ntej xaiv nws.
Cov ntawv tshaj tawm qhia tshwj xeeb qhia txog lub tsho PVC tab sis tsis muab cov kev faib tawm no. Tau txais cov ntaub ntawv ntsuas kev ua tau zoo yog tias muaj roj, UV, dej lossis tshuaj lom neeg.
Cov ntaub ntawv UL thiab RoHS cov lus piav qhia tshwm sim hauv cov khoom siv; thov siv tau cov ntaub ntawv txhawb nqa cable tshwj xeeb thiab tus lej qauv.
Muab qhov xav tau cable ntev, ntau npaum li cas, ntim cov khoom yuav tsum tau thiab txhua qhov kev hloov kho rau kev pom zoo ntawm qhov ua tau thiab cov nqe lus lag luam.
Muab 20AWG × 3, ntev, kom muaj nuj nqis, xa mus rau qhov chaw, cable-carrier tej yam kev mob, daim ntawv thov, pinout los yog wiring sij hawm thiab tej yam kev xav tau cov ntaub ntawv.
