Intambo ye-THW iyinto kagesi eguquguqukayo enezinzuzo zokumelana nokushisa okuphezulu, ukumelana nokuguguleka, amandla aphezulu kagesi, kanye nokufakwa okulula. Intambo ye-THW isetshenziswa kabanzi ezintanjeni zekhebula zokuhlala, zezentengiselwano, ezisebenza ngaphezulu, kanye nezingaphansi komhlaba, futhi ukuthembeka kwayo kanye nomnotho wayo sekungenye yezinto zentambo ezikhethwayo embonini yokwakha kanye nekagesi.
Iyini intambo ye-THW
Intambo ye-THW uhlobo lwentambo kagesi esetshenziswa kabanzi eyakhiwa kakhulu yi-conductor eyenziwe ngethusi noma i-aluminium kanye nezinto zokuvikela ezenziwe nge-polyvinyl chloride (PVC). I-THW imele i-Plastics Intambo Ye-Aerial Emelana Nesimo Sezulu Esiphezulu. Le ntambo ingasetshenziswa hhayi kuphela ezinhlelweni zokusabalalisa zangaphakathi kodwa futhi nasemigqeni yentambo ephezulu nengaphansi komhlaba, enezinhlelo zokusebenza eziningi. Intambo ye-THW isetshenziswa kabanzi eNyakatho Melika nakwezinye izifunda futhi ithandwa kakhulu.
Izici zentambo ye-THW
1. Ukumelana nokushisa okuphezulu, ucingo lwe-THW lusebenzisa izinto ze-PVC njengesendlalelo sokuvimbela ukushisa, okwenza ucingo lube nokumelana okuhle kakhulu nokushisa okuphezulu futhi lungamelana nokushisa okuphezulu kokusebenza kanye nomthwalo wamanje. Ngakho-ke, ucingo lwe-THW lufaneleka kakhulu ukusetshenziswa ezindaweni ezinokushisa okuphezulu.
2. Ngenxa yokumelana nokuguguleka, igobolondo langaphandle lentambo ye-THW lenziwe ngezinto ze-PVC, ezingavikela ngempumelelo intambo ekugugulekeni nasekulimeni. Le ntambo ayithintwa yizinto zangaphandle zomzimba noma zamakhemikhali futhi ingagcina ukusebenza kwayo okuhle isikhathi eside.
3. Njengoba inomthamo we-voltage ephezulu, intambo ye-THW inomthamo we-voltage ephezulu futhi ingasebenza ngokuphepha ngaphansi kwezimo ze-voltage ephezulu. Le ntambo ingamelana ne-voltage ephezulu engu-600V, engahlangabezana nezidingo zezinhlelo zokusebenza eziningi zokuhlala nezebhizinisi.
4. Kulula ukuyifaka, ucingo lwe-THW luguquguquka kancane, okwenza kube lula kakhulu ukuyifaka kanye nocingo. Ngenxa yokuguquguquka kwayo kanye nokuguquguquka kwayo, ucingo lwe-THW lungagobeka futhi lujijeke kalula, okwenza ukufakwa kube lula kakhulu.
Ukusetshenziswa kwentambo ye-THW
1. Ukusetshenziswa kwezindawo zokuhlala nezokuhweba, ucingo lwe-THW luyisici esiyinhloko samasekethe angaphakathi nezinhlelo zokusabalalisa izakhiwo, ezivame ukusetshenziselwa ukunikezwa kwamandla ezinto zasekhaya ezahlukahlukene njengezibani, amasokhethi, amathelevishini, kanye nama-air conditioner.
2. Izintambo zekhebula eziphezu kwekhanda, ngenxa yokumelana nokushisa okuphezulu kwentambo ye-THW kanye nokumelana nokuguguleka, ingakwazi ukumelana nezimo zezulu ezimbi kakhulu kanye nemiphumela yangaphandle yemvelo, ngakho-ke isetshenziswa kabanzi ezintanjeni zekhebula eziphezu kwekhanda.
3. Izintambo zekhebula ezingaphansi komhlaba, ungqimba lokuvikela ucingo lwe-THW lungavimbela ucingo ukuthi luhlangane namanzi noma ezinye izindawo zangaphandle, ngakho-ke luvame ukusetshenziswa ezintanjeni zekhebula ezingaphansi komhlaba. Lolu cingo lungamelana nomswakama kanye nezindawo ezimanzi futhi lungavikela ucingo ekugqwaleni nasekugugeni.
Ucingo lwe-THW vs. Ucingo lwe-THWN
Intambo ye-THW, intambo ye-THHN kanye nentambo ye-THWN konke kuyimikhiqizo eyisisekelo yentambo eyodwa eyinhloko. Izintambo ze-THWN kanye nezintambo ze-THWN zifana kakhulu ngokubukeka nangezinto zokwakha, kodwa umehluko omkhulu phakathi kwazo umehluko ezintweni zokufaka umswakama kanye nejakethi. Izintambo ze-THWN zisebenzisa ukufakelwa umswakama kwe-polyvinyl chloride (PVC), kuyilapho izintambo ze-THWN zisebenzisa ukufakelwa umswakama kwe-thermoplastic polyethylene (XLPE) okusezingeni eliphezulu. Uma kuqhathaniswa ne-PVC, i-XLPE isebenza kahle kakhulu, inokumelana kwamanzi okungcono kanye nokumelana nokushisa. Ngokuvamile, izinga lokushisa lokusebenza lentambo ye-THWN lingafinyelela ku-90°C, kuyilapho elocingo lwe-THW lingu-75°C kuphela, okusho ukuthi, intambo ye-THWN inokumelana nokushisa okuqinile.
Intambo ye-THW vs. Intambo ye-THHN
Nakuba zombili izintambo ze-THW kanye nezintambo ze-THHN zakhiwe ngezintambo kanye nezendlalelo zokufaka izinto, umehluko ezintweni zokufaka izinto uholela ekusebenzeni kwazo okuhlukile kwezinye izici. Izintambo ze-THW zisebenzisa izinto ze-polyvinyl chloride (PVC), kuyilapho izintambo ze-THHN zisebenzisa i-epoxy acrylic resin yokushisa okuphezulu (i-THERMOPLASTIC HIGH HEAT RESISTANT NYLON), ehlala izinzile emazingeni okushisa aphezulu. Ngaphezu kwalokho, izintambo ze-THW ngokuvamile zithambile kunezintambo ze-THHN ukuze zivumelane nezimo eziningi zokusetshenziswa.
Izintambo ze-THW kanye nezintambo ze-THHN nazo ziyahlukahluka ngesitifiketi. Zombili i-UL kanye ne-CSA, izinhlangano ezimbili ezinkulu zokuqinisekisa ukuqiniswa e-United States naseCanada, zinikeza isitifiketi sezintambo ze-THW kanye ne-THHN. Kodwa-ke, izindlela zokuqinisekisa zalezi ezimbili zihlukile kancane. Intambo ye-THW idinga ukuqinisekiswa yi-UL, kanti intambo ye-THHN idinga ukuhlangabezana nezidingo zezikhungo zokuqinisekisa ze-UL kanye ne-CSA.
Ngamafuphi, ucingo lwe-THW luyinto yocingo esetshenziswa kabanzi, futhi ukuthembeka kwalo kanye nomnotho walo sekungenye yezinto zocingo ezikhethwayo embonini yokwakha kanye nemboni kagesi. Ucingo lwe-THW lusebenza kahle kakhulu futhi lungahlangabezana nezidingo zezikhathi ezahlukahlukene, okuletha ukulula nokuphepha empilweni yethu kanye nasembonini.
Isikhathi sokuthunyelwe: Julayi-15-2023