Iindaba zeMveliso
Kwenzeka ntoni xa utsiba iMigangatho yokuThotyelwa kweMigangatho yeeNtambo zeZixhobo?
Iintambo zezixhobo ezingathobeliyo imithetho zibangela ukulahleka kwesiginali, ukungasebenzi kakuhle kwezixhobo, kunye neengozi zokhuseleko.
Idatha yeshishini ibonisa ukuba ama-80% ofakelo olungathobeliyo ahlangabezana neengxaki kwiinyanga ezili-18.
Funda ngemiphumo yokwenyani yokutsiba i-EN 50288-7, i-IEC 60332, okanye iimfuno ze-NEC - kunye nesizathu sokuba ukuthotyelwa kwemithetho kukhusela isityalo sakho.
Ungayikhetha njani intambo yezixhobo ezininzi efanelekileyo kwiprojekthi yakho?
Ukukhetha iintambo zezixhobo ezinamabini amaninzi kufuna ukumisela inani lezibini (1-100+), ubungakanani bomqhubi (18-24 AWG / 0.5-2.5mm²), uhlobo lokukhusela (ifoyile/i-braid/composite), kunye nezinto zejakethi (PVC/LSZH/PUR).
Esi sikhokelo sigubungela ukuthobela i-EN 50288-7 kunye nesakhelo sokukhetha inyathelo ngenyathelo semiqondiso ye-analog neyedijithali.
Ingcaciso esemgangathweni ye-EN 50288-7: Oko Abathengi beCable yeZixhobo zoMbane abamele bakwazi
I-EN 50288-7 ngumgangatho waseYurophu weentambo zokulawula izixhobo, ichaza iiparameter zombane (impedance, capacitance, attenuation), iipropati zoomatshini, ukubambezeleka komlilo, kunye nokulinganiswa kobushushu.
Abathengi kufuneka baqinisekise ukuthotyelwa kophawu lwe-CE kunye neenkcukacha zeprojekthi.
Funda iimfuno eziphambili kunye noluhlu lokuhlola lokukhetha.
I-Twisted Pair vs Coaxial vs BS5308: Yeyiphi intambo yezixhobo omele uyikhethe?
Ukukhetha phakathi kwe-twisted pair (crosstalk reduction), i-coaxial (high-frequency), kunye ne-BS5308 (i-oyile kunye ne-gas spec) kuxhomekeke kuhlobo lwesignali yakho, umgama, kunye nendawo ohlala kuyo.
I-Twisted pair igqwesile kwi-4-20mA kunye ne-RS485. I-Coaxial ye-high-frequency kunye nevidiyo.
I-BS5308 yongeza ukhuseleko loomatshini kunye novavanyo lwe-IS kwizityalo ze-petrochemical.
Yintoni iCable yeZixhobo eziKhuselekileyo kwaye Kutheni iCable ibalulekile?
Iintambo ezikhuselekileyo ngaphakathi mazibe luhlaza okwesibhakabhaka (RAL 5015) ngokwe-IEC 60079-14 ukuze kuchongwe indawo enobungozi.
Le khowudi yombala inyanzelekileyo ivumela iingcali zombane ukuba zikwazi ukwahlula ngoko nangoko iisekethe ze-IS kwiintambo zombane ezingezizo ze-IS, nto leyo ethintela uqhagamshelo lwamandla ayingozi ngengozi.
Ngaba i-24 volts ikhuselekile ngokwasemzimbeni
Impendulo ethe ngqo yile: Hayi.
Ngaba iCable ekhuselekileyo yangaphakathi kufuneka ibe luhlaza okwesibhakabhaka?
Ewe, ngokwe-IEC 60079-14, iintambo ezikhuselekileyo ngokwemvelo KUFUNEKA zibe neshelufu yangaphandle eluhlaza okwesibhakabhaka (RAL 5015) ukuze kuchongwe indawo enobungozi.
Le khowudi yombala iyimfuneko ivumela ukubonwa kwangoko kweesekethe ze-IS, ithintela uqhagamshelo ngengozi lwamandla angengo-IS.
Kukho iimeko ezimbalwa ezingaqhelekanga kwiintambo ezincinci kakhulu kunye nokufakelwa okukhoyo.
Yintoni intambo yeSWA Armoured Cable ekhuselekileyo ngaphakathi?
Intambo ye-SWA (Steel Wire Armour) ekhuselekileyo ngokwendalo idibanisa umda wamandla (IS) kunye nokhuseleko loomatshini (steel wire armor). Ukumelana nokuqhekeka ukuya kuthi ga kwi-4,000 N/10cm, ukhuseleko lwe-rodent/vermin, kunye namandla aphezulu okutsalwa ukuze kufakelwe indawo enobungozi. I-LSZH sheath eluhlaza okwesibhakabhaka igcina ukuhambelana kwe-IS ngelixa izixhobo zokukhusela zongeza ukuqina.
Yintoni iCable yeAlarm yoMlilo eKhuselekileyo ngaphakathi?
Intambo yesilumkiso somlilo ekhuselekileyo ngaphakathi idibanisa umda wamandla (ithintela ukutsha) kunye nokuthembeka kwesekethe (igcina ukusebenza ngexesha lomlilo).
Iqinisekisiwe kwiindawo ezinobungozi (iZone 0/1/2) kunye novavanyo olufana ne-FE180 (ukusinda komlilo kwimizuzu eli-180) kunye ne-LSZH sheathing.
Funda indlela iintambo zomlilo ze-IS ezibona ngayo imililo ngaphandle kokuyibangela.
Kutheni iiCables eziKhuselekileyo ngaphakathi ziLuhlaza okwesibhakabhaka?
Iintambo ezikhuselekileyo ngaphakathi ziluhlaza okwesibhakabhaka (i-RAL 5015) ngokwe-IEC 60079-14 ukuze zibonwe ngokukhawuleza kwiindawo ezinobungozi. Le khowudi yombala inyanzelekileyo ivumela iingcali zombane ukuba zahlule ngoko nangoko iisekethe ze-IS kwiintambo zombane ezingezizo eze-IS—ukuthintela uqhagamshelo olungengozi lwamandla ayingozi. Funda imigaqo esemgangathweni, iimeko ezingaqhelekanga, kunye neendlela zokukhetha.