Iifom zokubeka phantsi kunye neemfuno ezisisiseko zeenkqubo zokuhambisa amandla aphantsi-voltage Ukuze usebenzisane nezixhobo zokukhusela umbane ezifana nesixhobo sokukhusela umbane kwiinkqubo zombane ezinevoltheji ephantsi ukukhupha umbane, ukumisa kwiinkqubo zokuhambisa amandla ombane ophantsi kufuneka kufezekise ezi mfuno zilandelayo: 1. Iifom zesiseko senkqubo ephantsi zingahlulwa zibe ziintlobo ezintathu: TN, TT, kunye ne-IT. Phakathi kwabo, inkqubo ye-TN inokwahlulwa ibe ziindidi ezintathu: TN-C, TN-S kunye neTN-C-S. 2. Ifomu yokumisa inkqubo yokusabalalisa umbane ophantsi kufuneka imiselwe ngokweemfuno ezithile zokhuseleko lombane lwenkqubo. 3. Xa isiseko esikhuselayo kunye nesiseko esisebenzayo sabelana ngomqhubi ofanayo wokumisa, iimfuno ezifanelekileyo zomqhubi womhlaba okhuselayo ziya kudibana kuqala. 4. Iindawo eziveziweyo zokuqhuba zofakelo lombane aziyi kusetyenziswa njengezonxibelelwano zotshintsho lwenkqubo yokukhusela umhlaba (PE). 5. Umqhubi womhlaba okhuselayo (PE) uya kuhlangabezana nezi mfuno zilandelayo: I-1.Umqhubi womhlaba okhuselayo (PE) uya kuba nokukhuselwa okufanelekileyo kumonakalo womatshini, umonakalo wekhemikhali okanye we-electrochemical, i-electrodynamic kunye ne-thermal effects, njl. 2. Izixhobo zombane ezikhuselayo kunye nezixhobo zokutshintsha aziyi kufakwa kwi-conductor yomhlaba ekhuselayo (PE), kodwa iindawo zokudibanisa ezinokuthi zikhutshwe kuphela ngezixhobo zivunyelwe. 3.Xa usebenzisa izixhobo zokubeka iliso zombane ukuze kubonwe umhlaba, amacandelo akhethekileyo afana neenzwa zokusebenza, iikhoyili, ii-transformers zangoku, njl. 4. Xa umqhubi wobhedu exhunywe kumqhubi we-aluminium, kufuneka kusetyenziswe isixhobo esikhethekileyo sokudibanisa ubhedu kunye ne-aluminium. 6. Indawo enqamlezileyo yomqhubi womhlaba okhuselayo (PE) kufuneka ihlangabezane neemeko zokuphela kombane ozenzekelayo emva kwesekethe emfutshane, kwaye inokumelana noxinzelelo lomatshini kunye neziphumo ezishushu ezibangelwa yimpazamo elindelekileyo yangoku ngaphakathi kokusikwa- ixesha lokungabikho kwesixhobo sokukhusela. 7. Ubuncinane bommandla onqamlezileyo womqhubi womhlaba wokhuselo (PE) uya kuthobela imiqathango yeSiqendu 7.4.5 salo mgangatho. 8. Umqhubi womhlaba okhuselayo (PE) unokubandakanya omnye okanye ngaphezulu kwaba balandelayo: 1.Abaqhubi kwiintambo ezininzi ezingundoqo 2.Ii-conductors ezigqunyiweyo okanye ezingenanto ekwabelwana ngazo nabaqhubi abaphilayo 3.Ii-conductor ezingenanto okanye ezigqunyiweyo zofakelo olusisigxina 4.Iibhatyi zekheyibhile zesinyithi kunye neentambo zamandla ezinxibelelanisa ezidibanayo kunye nokuqhubekeka kombane okuguquguqukayo 9. Ezi ndawo zilandelayo zentsimbi aziyi kusetyenziswa njengee-conductor zomhlaba ezikhuselayo (PE): 1.Umbhobho wamanzi wesinyithi 2.Imibhobho yesinyithi equkethe igesi, ulwelo, umgubo, njl. 3.I-flexible okanye i-bendable metal conduit 4.Amalungu esinyithi aguquguqukayo 5. Intambo yokuxhasa, i-cable tray, i-conduit yokukhusela isinyithi

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Ixesha lokuposa: Apr-28-2022