Intambo yeJiapu ikuxelela izizathu eziqhelekileyo zeengxaki zentambo yombane. Iintlobo zeempazamo zentambo zinokwahlulwa zibe yi-grounding, short circuit, kunye nokuqhawuka kweendidi ezintathu eziphambili zeentlobo zeempazamo zezi zilandelayo:
Isigaba sentambo engundoqo ephukileyo okanye intambo ephukileyo enezigaba ezininzi
Kwilinge loqhagamshelo lwentambo, ukumelana nokwambathisa umqhubi wentambo kunye nemigaqo efanelekileyo yomgca, kodwa xa kujongwa isigaba okanye izigaba ezininzi azinakudityaniswa, emva koko isigaba sokuqhekeka kwentambo engundoqo okanye izigaba ezininzi ziyaqhekeka.
Intambo eneentloko ezintathu isiseko esinye okanye ezimbini
Iintambo ze-core ezintathu okanye ii-core conductors ezimbini ezinetafile yokushukuma kwe-insulation zivavanye ngaphandle konxibelelwano, uze emva koko i-core okanye ii-core ezimbini ukuya kwi-ground insulation resistance telemetry. Ukuba i-core kunye ne-core phakathi kobukho bokuxhathisa kwe-insulation kunexabiso eliqhelekileyo liphantsi kakhulu kunexabiso lale xabiso lokuxhathisa kwe-insulation liphezulu kune-1000 ohms libizwa ngokuba yi-high resistance grounding fault; Ngokwahlukileyo koko, yi-low resistance grounding fault. Zombini ezi mpazamo zibizwa ngokuba zii-disconnected kunye ne-grounded faults.
Isekethe emfutshane yesiseko esinezigaba ezintathu
Ubungakanani bokumelana nokumisa umhlaba ngesekethe emfutshane yintambo yokuchongwa kwesiphako sesekethe esifutshane sesigaba sesithathu sesiseko. Kukho iintlobo ezimbini zesiphako sesekethe esifutshane: isiphako sesekethe esifutshane esiphantsi, iphako lesekethe esifutshane esiphakamileyo. Xa isekethe esifutshane sesigaba sesithathu, ngaphantsi kwe-1000 ohms yokuxhathisa komhlaba kukumelana okuphantsi, ngokuchaseneyo, yiphako lesekethe esifutshane esiphakamileyo.
Uhlalutyo lwesizathu:
Okokuqala: umonakalo wangaphandle
Iingxaki zekhebula kumonakalo wangaphandle zezona zinto zixhaphakileyo zengxaki. Ikhebula lonakaliswe ngamandla angaphandle kwixesha elizayo liza kubonisa indawo enkulu yokusilela kwamandla. Umzekelo, inkqubo yokwakha imibhobho engaphantsi komhlaba, ikhebula kuba umatshini wokwakha unamandla amakhulu kwaye watsalwa; ubushushu bekhebula, umaleko wokukhusela ngenxa yokugoba kakhulu kwekhebula kunye nomonakalo; ukunqunyulwa kwekhebula ukukrazula ukusika okugqithisileyo kunye neempawu zemela ezinzulu kakhulu. Ezi zinto zangaphandle ngqo ziya kwenza umonakalo othile kwikhebula.
Okwesibini: ukufuma kwe-insulation
Inkqubo yokwenziwa kweentambo ayilungiswanga iya kukhokelela ekubeni umaleko wokukhusela wentambo uqhekeke; ukutywinwa kwamalungu esiphelo sentambo akuqhekekanga; isingxobo sokukhusela intambo kwintambo esetyenziswe yinto ehlatyiweyo okanye mhlawumbi ichaphazeleke ngumhlwa. Ezi zezona zizathu ziphambili zokufuma kwentambo. Okwangoku, ukumelana kwe-insulation kuyehla, umsinga uyanda, nto leyo ebangela iingxaki zamandla.
Isithathu: ukubola kweekhemikhali
Isenzo sangoku sexesha elide siya kuvumela ukuba i-insulation yekhebula ifumane ubushushu obuninzi. Ukuba i-insulation yekhebula isebenza ixesha elide kwindawo engcolileyo yeekhemikhali iya kutshintsha iimpawu zayo zomzimba, ukuze i-insulation yekhebula iguge kwaye ingasebenzi, iingxaki zamandla ziya kubakho.
Isine: ukusebenza ngokugqithisileyo kwexesha elide
Ukusebenza kwexesha elide kwentambo enombane ophezulu kwindalo esingqongileyo, ukuba umaleko wokufakelwa komgca unokungcola okanye ukwaluphala, kunye nezinto zangaphandle ezifana nombane kunye nezinye iziphumo ze-overvoltage, ukugqithisa kwenzeka ubushushu obuninzi, kulula kakhulu ukubonisa iingxaki zentambo.
Ixesha lokuthumela: Okthobha-10-2023