Izindaba
Kwenzekani Uma Weqa Izindinganiso Zokuthobela Imithetho Yamakhebula Ezinsimbi?
Izintambo zezinsimbi ezingahambisani nomthetho zibangela ukulahleka kwesiginali, ukwehluleka kwemishini, kanye nezingozi zokuphepha.
Imininingwane yemboni ikhombisa ukuthi ama-80% okufakwa okungalandeli imithetho abhekana nezinkinga zingakapheli izinyanga eziyi-18.
Funda ngemiphumela yangempela yokweqa izimfuneko ze-EN 50288-7, i-IEC 60332, noma ze-NEC - nokuthi kungani ukuthobela imithetho kuvikela isitshalo sakho.
Ungayikhetha Kanjani Ikhebula Elifanele Lezinsimbi Eziningi Zephrojekthi Yakho?
Ukukhetha izintambo zezinsimbi ezinamabhangqa amaningi kudinga ukunquma inani lamabhangqa (1-100+), usayizi womqhubi (18-24 AWG / 0.5-2.5mm²), uhlobo lokuvikela (ifoyili/ukuluka/inhlanganisela), kanye nezinto zejakethi (PVC/LSZH/PUR).
Lo mhlahlandlela uhlanganisa ukuhambisana ne-EN 50288-7 kanye nohlaka lokukhetha isinyathelo ngesinyathelo lwezimpawu ze-analog nezedijithali.
Incazelo Ejwayelekile ye-EN 50288-7: Lokho Abathengi Bezintambo Zezinsimbi Okumele Bakwazi
I-EN 50288-7 iyindinganiso yaseYurophu yezintambo zokufaka izinto kanye nokulawula, icacisa amapharamitha kagesi (i-impedance, i-capacitance, i-attenuation), izakhiwo zemishini, ukubambezeleka komlilo, kanye nezilinganiso zokushisa.
Abathengi kumele baqinisekise ukuhambisana nokumaka kwe-CE kanye nemininingwane yephrojekthi.
Funda izidingo ezibalulekile kanye nohlu lokuhlola lokukhetha.
I-Twisted Pair vs Coaxial vs BS5308: Yimuphi Umshini Wokufaka Izinsimbi Okufanele Uwukhethe?
Ukukhetha phakathi kwe-twisted pair (crosstalk reduction), i-coaxial (high-frequency), kanye ne-BS5308 (i-oyili ne-gas spec) kuncike ohlotsheni lwesignali yakho, ibanga, kanye nendawo ezungezile.
Ipheya elisontekile lisebenza kahle kakhulu ku-4-20mA kanye ne-RS485. I-Coaxial yemvamisa ephezulu kanye nevidiyo.
I-BS5308 ingeza ukuvikelwa kwemishini kanye nesilinganiso se-IS sezitshalo ze-petrochemical.
Iyini Ikhebula Lezinsimbi Ezivikelwe Futhi Kungani Ukuvikela Kubalulekile?
Izintambo eziphephile ngaphakathi kumele zibe luhlaza okwesibhakabhaka (RAL 5015) ngokwe-IEC 60079-14 ukuze kutholakale indawo eyingozi.
Le khodi yombala ephoqelekile ivumela ochwepheshe bezogesi ukuthi bahlukanise ngokushesha izifunda ze-IS nezintambo zikagesi ezingezona eze-IS, okuvimbela ukuxhumeka kwamandla ayingozi ngengozi.
Ukwehlisa Isabelo Semakethe Esingaphansi Kwama-70% Kumakhebula Okuphepha Angaphakathi Emayini Yamalahle ase-Australia | Ikhebula le-Dingzun
Ikhebula iShanghai Dingzun liqinisekisa ubambiswano olubalulekile lweminyaka emi-5 neqembu lezimayini ezintathu eziphezulu zase-Australia, lihlinzeka ngo-70% wezidingo zalo zekhebula lezinsimbi eziphephile (IS). Thola ukuthi izintambo zethu eziqinisekisiwe ze-Ex-ia, ezinamandla amancane zixazulula kanjani izinselele zemvelo ezinzima.
Ingabe ama-volt angu-24 aphephile ngokwendalo?
Impendulo eqondile ithi: Cha.
Ingabe Ikhebula Eliphephile Ngokwemvelo Kumelwe Libe Luhlaza Okwesibhakabhaka?
Yebo, ngokwe-IEC 60079-14, izintambo eziphephile ngokwemvelo KUMELE zibe neshelu langaphandle eliluhlaza okwesibhakabhaka (RAL 5015) ukuze kutholakale indawo eyingozi.
Le khodi yombala ephoqelekile ivumela ukubonwa okusheshayo kwezifunda ze-IS, ivimbele ukuxhumeka ngengozi kwamandla angewona awe-IS.
Kukhona okulinganiselwe okuhlukile kumakhebula amancane kakhulu kanye nokufakwa okukhona.
Iyini Ikhebula Elihlonyiswe Nge-SWA Eliphephile Ngokwemvelo?
Ikhebula le-SWA (Steel Wire Armour) eliphephile ngokwalo lihlanganisa ukulinganiselwa kwamandla (IS) nokuvikelwa komshini (insimbi yensimbi yensimbi). Ukumelana nokuchoboza okufika ku-4,000 N/10cm, ukuvikelwa kwamagundane/izilokazane, kanye namandla aphezulu okudonswa ukuze kufakwe izindawo eziyingozi. I-LSZH sheath eluhlaza okwesibhakabhaka igcina ukuhambisana ne-IS ngenkathi ukuvikela kuqinisa ukuqina.
Iyini Ikhebula Le-Alarm Yomlilo Eliphephile Ngokwemvelo?
Ikhebula le-alamu yomlilo eliphephile ngokwemvelo lihlanganisa ukulinganiselwa kwamandla (kuvimbela ukusha) nobuqotho besekethe (ligcina ukusebenza ngesikhathi somlilo).
Kuqinisekiswe ezindaweni eziyingozi (iZone 0/1/2) ngezilinganiso ezifana ne-FE180 (ukusinda emlilweni imizuzu engu-180) kanye ne-LSZH sheathing.
Funda ukuthi izintambo zomlilo ze-IS zibona kanjani imililo ngaphandle kokuyibangela.