Indlela yokufaka izithethi ze-PA zangaphandle ezikhusela imozulu kwizaziso

Isithethi esimelana nemozulu sisebenza kuphela xa ukufakelwa kuhambelana nendawo yendawo kunye noyilo lwenkqubo. Esi sikhokelo sichaza amanyathelo asebenzayo, imigangatho, kunye nokuhlolwa okufunekayo ukuze kubekho ukusebenza okuthembekileyo kwe-PA yangaphandle.

Ukufakwa Kwesipikha Esingenamozulu: Oko Kufuneka Kufezwe Ngumsebenzi

Injongo yokufakela kukuvalelwa kwesandi okuzinzileyo, kungekuphela nje kokufakelwa ngokwasemzimbeni. Iinkqubo ze-PA zangaphandle kufuneka zimelane nemvula, uthuli, ukugqwala, ukungcangcazela, kunye nokuphazanyiswa ngelixa zisazisa izaziso ezicacileyo.

Kwiindawo zoshishino nezoluntu, isithethi kufuneka sikhethwe size sifakelwe njengezixhobo ezidwelisiweyo okanye ezineelebheli, emva koko sisetyenziswe ngokwemiyalelo yomenzi. I-OSHA ithi izixhobo ezidwelisiweyo okanye ezineelebheli mazifakelwe kwaye zisetyenziswe ngokwemiyalelo yayo, engumgaqo osisiseko wokuthobela umsebenzi wombane.I-OSHA 1910.303Enyanisweni, oko kuthetha ukuba isibiyeli, intambo yentsimbi, isitywino, kunye netephu yombane zonke kufuneka zihambelane nenkcazo yemveliso.

Iindidi zeMveliso eziphambili kwiSayithi yoMboneleli

Ulwakhiwo oluphambili lwemveliso yomthengisi luluncedo ekufaniseni isixhobo sonxibelelwano esifanelekileyo nesiza. Iindidi eziphambili ziquka iinkqubo zefowuni ezikhethekileyo zoshishino, iifowuni ezikhusela ukuqhuma kunye nezikhuselekileyo ngokwangaphakathi, iifowuni ezimelana nemozulu kunye nezonakalisayo, iinkqubo ze-intercom kunye neefowuni ezingxamisekileyo, kunye neenkqubo zedilesi kawonkewonke kunye neenkqubo zokuqinisa isandi kwindawo.

Kwiiprojekthi zokubhengeza zangaphandle, iintsapho zemveliso ezifanelekileyo zeziuluhlu lwesithethi se-horn, iisandisi-lizwi esimelana nemozulu, kwaye ngokubanziiinkqubo zonxibelelwano lwemizi-mvelisoipotifoliyo. Ezi ndidi zinceda abathengi bathelekise iindlela zokufakela, ukhuseleko lwendawo ebiyelweyo, kunye nokuhlanganiswa kwenkqubo ngaphambi kokuba kuqalwe ukufakwa.

Ukufakwa kweSipikha Esingangenisi Imozulu ngeNyathelo

Ulandelelwano oluchanekileyo lofakelo kukuhlolwa kwendawo, ukufakwa, ukuvalwa, ukufakwa kweentambo, kunye novavanyo. Ukutsiba naliphi na kula manyathelo kudla ngokubangela ukungaphumeleli okubonakala kamva njengokungena kwamanzi, ukugqunywa kakubi, okanye isandi esingena rhoqo.

1. Hlola indawo kwaye uqinisekise iindawo zokugubungela, ingxolo yendawo, kunye nokuphakama kwendawo yokuxhoma.
2. Qinisekisa umlinganiselo wokuvalwa, indlela yokungena kwikhebula, kunye neemfuno zamandla.
3. Faka ibracket kwindawo eyomeleleyo ngokwesakhiwo ngezixhobo ezimelana nokugqwala.
4. Vala zonke iindlela zokungena uze udlulise intambo kwi-conduit ekhuselweyo okanye kwiiglands ezivunyiweyo.
5. Cima iingcingo, jonga i-polarity, kwaye uvavanye ukuba isandi sivakala kakuhle na kwindawo yokumamela.

Uvavanyo lwendawo kufuneka luze kuqala kuba i-acoustic yangaphandle iyatshintsha ngokwemigama, umoya, kunye noomatshini bangasemva. Isithethi esisebenza kufutshane nedokhi yokulayisha sinokungaphumeleli kwiyadi evulekileyo ukuba ipateni yokuphosa incinci kakhulu okanye ukuphakama kokuyibeka kuphantsi kakhulu.

Ukufakela kufuneka kusebenzise umphezulu oqinileyo kunye nezixhobo ezilinganiswe ngokwendalo esingqongileyo. Isikhokelo se-NEMA sichaza ukuba iindawo ezibiyelweyo zangaphandle zichazwa ngokweemfuno zokhuseleko lokusingqongileyo, kwaye i-NEMA 250 ngumgangatho osetyenziswayo wokwakha nokuphawula indawo ebiyelweyo.Iintlobo ze-NEMA ezivalekileyo Isikopu se-NEMA 250Kwizixhobo zesandi zangaphandle, oko kuthetha ukuba indawo yokufakela kufuneka ixhase umthwalo opheleleyo, kuquka umoya kunye nokungcangcazela.

Ukutywina yeyona ndawo ixhaphakileyo yokusilela kwiindawo zokufakelwa ngaphandle. I-IEC ichaza ukuba ukulinganiswa kwe-IP kuhlela ukhuseleko oluvaliweyo kwizinto eziqinileyo kunye nolwelo phantsi kwe-IEC 60529, ngoko ke umfaki kufuneka agcine ukhuseleko lokungena olucetywayo ngexesha lokungena nokuphelisa intambo.Isikhokelo sokulinganisa i-IEC IP I-IEC 60529Ukuba i-cable gland ayilunganga okanye i-gasket icinezelwe, umlinganiselo wemveliso awusasebenzi.

Ukufakelwa kweentambo kufuneka kulandele i-voltage yenkqubo kunye noseto lwempompo yomenzi. I-OSHA ifuna ukuba ukufakwa kweentambo ezigqityiweyo kungabi neesekethe ezimfutshane kunye nemimandla engafunekiyo, kwaye izixhobo kufuneka zifakwe ngokwezintlu zazo okanye ilebheli.I-OSHA 1910.303 Ingcaciso ye-OSHA kwizixhobo ezidwelisiweyoKwiinkqubo ze-PA, oko kuthetha ukuqinisekisa ukuba umgca yi-70V, 100V, okanye i-low-impedance ngaphambi kokuba unike amandla isekethe.

Izinto Zokufakelwa Ezichaphazela Ukusebenza Kwe-PA Yangaphandle

Izinto ezibalulekileyo zokufakela kukulinganiswa kokhuseleko, ukuqondwa kwentetho, ukuhambelana komgca, kunye nokufikelela ekugcinweni kwayo. Ezi ngongoma zine zimisela ukuba isithethi sihlala sisebenziseka na emva kweenyanga zokuchaphazeleka yimozulu.

Ukuqondwa kwentetho kubaluleke ngaphezu kwesandi esingaqhelekanga kwiindawo ezininzi. I-NFPA 72 ibandakanya iimfuno zesaziso esikhulu kunye nonxibelelwano olungxamisekileyo, kwaye idibanisa ezo nkqubo ukuze zicacise ukusebenza kwelizwi kwiimeko ezingxamisekileyo.I-NFPA 72Ngokwendlela esebenzisekayo, isithethi kufuneka sijoliswe kwaye sinikwe amandla ukuze umyalezo uhlale uqondakala ngaphezu kwengxolo engqongileyo.

Ukufikelela kulondolozo kufuneka kucwangciswe ngexesha lokufakelwa, kungekhona emva kokuba kungasebenzi. Ukuseta ngaphandle okuhle kuvumela ukuhlolwa kwezitywino, iiterminals, kunye neebrakethi ngaphandle kokuchitha yonke iyunithi.

Itheyibhile yokuthelekisa: Iinketho zokuFakela iSithethi sangaphandle eziqhelekileyo

Itheyibhile yokuthelekisa: Iinketho zokuFakela iSithethi sangaphandle eziqhelekileyo

Ukufakela eludongeni kudla ngokuba lolona khetho lukhawulezayo, kodwa akusoloko kulunge kakhulu ngokwesandi. Ukufakela iintsika kudla ngokuphucula ukusasazwa kwesandi kwiindawo ezivulekileyo, ngelixa ukufaka iintsika zentsimbi kusebenza kakuhle apho izakhiwo zentsimbi ezikhoyo sele zichaza indawo yokugubungela.

Uluhlu Lokujonga Ukufakelwa Kweentambo Ezisebenzayo Nokutywina

Inqanaba locingo kunye nokuvala limisela ukuthembeka kwexesha elide. Uninzi lokungaphumeleli ngaphandle luvela kwiiphelo ezikhululekileyo, ukukhululeka koxinzelelo olubi, okanye amanzi angena ngembobo engavalwanga.

• Sebenzisa uhlobo oluchanekileyo lwentambo xa ufuna ukubonwa ngaphandle kunye neemfuno zekhowudi yendawo.
• Gcina iintambo zigobile kancinci ukuze zingamonakalisi ijakethi.
• Faka ii-glands, ii-grommets, okanye izixhobo ze-conduit ezivunyiweyo kuyo yonke indawo yokungena.
• Faka i-torque kwiiterminal ngokwemiyalelo yomenzi.
• Faka ilebheli kwisekethe ukuze kulungiswe kwaye kulungiswe iingxaki kwixesha elizayo.

Ukhuseleko lombane kufuneka luqinisekiswe ngaphambi kokuba kuqaliswe okokugqibela. Imithetho yombane ye-OSHA ikwagxininisa ukuba ukufakelwa kombane ngaphandle kufuneka kufakwe okanye kukhuselwe ngokufanelekileyo ekufikeleleni okungagunyaziswanga apho kuyimfuneko.I-OSHA 1910.303 Inxalenye ye-OSHA SOko kubaluleke kakhulu kwiindawo zikawonke-wonke, kwiindawo zothutho, nakwiindawo zoshishino.

Uvavanyo Emva Kokufakwa

Uvavanyo kufuneka luqinisekise ukusebenza kunye nokuqondakala. Isithethi esivula kodwa singakwazi ukwenza intetho ecacileyo asikulungelanga ukusetyenziswa.

Qala ngokuhlola okubonakalayo, uze wenze uvavanyo lwesandi olusezantsi, uvavanyo lwesaziso olupheleleyo, kunye nokuhambahamba ukusuka kwindawo ekude yokumamela. Ukuba indawo isebenzisa imiyalezo engxamisekileyo, qinisekisa ukuba umyalezo uhlala uqondakala kwimeko yokusebenza enomsindo kakhulu. I-NFPA 1221 kunye ne-NFPA 72 zombini zixhasa ingcamango yokuba iinkqubo zonxibelelwano ezingxamisekileyo kufuneka zifakwe kwaye zigcinwe ukuze zisebenze ngokuthembekileyo.I-NFPA 1221 I-NFPA 72.

Ngokwezibalo zoshishino, iingxaki ezininzi ze-PA zangaphandle zifunyanwa kuphela emva kwemvula yokuqala enkulu okanye ubushushu obutshintshayo ngexesha lonyaka. Ukuhlolwa okufutshane emva kokufakelwa emva kokuvezwa yimozulu ke ngoko luvavanyo lomgangatho olusebenzayo.

Apho Ungathenga Khona Nento Onokuyithelekisa

Umboneleli ongcono ngulowo uhambelana neemfuno zobugcisa nezolondolozo lwesiza. Kubathengi beprojekthi, uthelekiso kufuneka lugxile kuvavanyo lwe-enclosure, izixhobo zokufakela, ukuhambelana komgca, kunye nokufumaneka kwezixhobo ezingasetyenziswanga endaweni yexabiso lodwa.

Amaphepha emveliso afanelekileyo kwindawo ekujoliswe kuyo aqukaudidi lwezithethi zehorn, iiphepha lemveliso yesandisi-lizwi esimelana nemozulu, kwaye iisishwankathelo seemvelisoLa maphepha aluncedo ekujongeni iimodeli ezikhoyo kunye nezinye izinto eziluncedo ngaphambi kokuba ugqibezele uluhlu lwezinto ezisetyenzisiweyo.

Kubathengi abathelekisa ezinye iindlela, ababoneleli abaziwayo kushishino baquka abavelisi abakhulu beedilesi zikawonke-wonke kunye nonxibelelwano olungxamisekileyo abapapasha amaphepha edatha yokufakela aneenkcukacha kunye namaxwebhu okuthobela imithetho. Eyona nto ibalulekileyo kukuthelekisa iinkcukacha ezibhaliweyo, kungekuphela nje amabango ekhathalogu.

FAQ

1. Yintoni inyathelo lokuqala lokufaka isithethi esimelana nemozulu?

Inyathelo lokuqala kukuvavanya indawo. Abafaki kufuneka baqinisekise indawo egutyungelweyo, ingxolo engqongileyo, umphezulu wokufakelwa, kunye nendlela yentambo ngaphambi kokubhoboza okanye ukufakelwa kweentambo. Oku kuthintela ukusasazwa kwesandi okubi kwaye kunciphisa amathuba okuphinda kusetyenziswe emva kokuqaliswa.

2. Ngaba izithethi ezimelana nemozulu zifuna izitywino okanye amadlala akhethekileyo?

Ewe. Iiyunithi zangaphandle zifuna iintambo zentambo ezifanelekileyo, iigrommets, okanye izixhobo zombhobho ukuze kugcinwe inqanaba lokhuseleko lwendawo ebiyelweyo. Ukuba indawo yokungena ayivalwanga kakuhle, amanzi nothuli zinokungena nokuba indlu yesipikha ngokwayo ilinganiswe ukuba isetyenziswe ngaphandle.

3. Ngaba izithethi ze-PA zangaphandle kufuneka zifakwe phezulu okanye phantsi?

Ukuphakama okuchanekileyo kuxhomekeke kwijiyometri yendawo kunye nenqanaba lengxolo. Ukufakelwa okuphezulu kudla ngokuphucula ukugubungela kwiindawo ezivulekileyo, ngelixa ukufakwa okuphantsi kunokusebenza kwiindawo ezimxinwa. Umfakeli kufuneka avavanye ukusebenziseka ukusuka kwindawo ekude yokumamela emva kokufakelwa.

4. Zeziphi iintambo zokujonga ezibaluleke kakhulu ngaphambi kokuba zivulwe?

Eyona nto ibalulekileyo kukujonga i-polarity, i-line voltage, i-terminal torque, kunye ne-insulation insulation integrity. I-OSHA ifuna ukuba iingcingo zingabi nazii-short circuits kunye ne-uninted grounds, kwaye izixhobo kufuneka zifakwe ngokwe-list okanye ilebhile yazo. Oko kwenza uvavanyo lwangaphambi kokunika amandla lube yimfuneko.

5. Ndingazi njani ukuba ukufakelwa kuphumelele?

Ufakelo oluphumeleleyo lunika intetho ecacileyo kwiindawo ekujoliswe kuzo, luhlala lomile emva kwemvula, kwaye luhlala lukhuselekile ngoomatshini phantsi kokungcangcazela. Ukuba umyalezo uyaqondakala, izitywino ziyabamba, kwaye isibiyeli sihlala siqinile, inkqubo ikulungele ukusebenza.