Yuav ua li cas tiv thaiv hluav taws los ntawm kev ua txhaum hauv av?

Piv nrog rau cov luv luv Circuit Court, qhov txhaum hauv av muaj kev phom sij ntau dua thiab nyuaj thaum hluav taws tshwm sim. Feem ntau, hluav taws xob luv luv feem ntau yog tshwm sim los ntawm qhov kub siab ntawm qhov luv luv Circuit Court tam sim no ua rau ntawm txoj kab, thaum qhov ua txhaum hauv av tuaj yeem ua rau hluav taws kub vim peb yam hauv qab no:
(1) Hluav taws kub los ntawm av txhaum tam sim no. Txoj kev tam sim no ntawm kev ua txhaum hauv av suav nrog cov khoom siv casing, conduit slots, thiab ntau qhov kev sib txuas ntawm cov khoom siv hauv av. TT system (grounding system) kuj siv hauv av ua txoj hauv kev. Lub grounding kuj ntawm lub ntiaj teb yog siab, thiab tus nqi kuj ntawm PE thiab PEN hlau (grounding hlau) txuas terminals yog feem ntau siab. Yog li ntawd, qhov txhaum hauv av tam sim no kuj me me, thiab feem ntau tsis tuaj yeem txiav tawm qhov txhaum ntawm cov khoom tiv thaiv overcurrent. Tsis tas li ntawd, muaj ntau cov ntsiab lus txhaum uas tsis fuse, ua rau arcs thiab sparks. Ib qho arc uas muaj qhov tam sim no ntawm 0.5A thiab qhov kub siab hauv cheeb tsam ntawm cov hluav taws xob hluav taws xob tuaj yeem cuam tshuam cov khoom siv hluav taws xob thiab ua rau hluav taws kub.
(2) Hluav taws kub los ntawm xoob kev twb kev txuas ntawm PE thiab PEN hlau terminals. PE kab rau cov khoom siv hauv av feem ntau tsis dhau los ntawm cov khoom thauj tam sim no, thiab tsuas yog dhau los ntawm qhov txhaum tam sim no thaum muaj qhov txhaum hauv av. Thaum muaj teeb meem hauv av thiab qhov txhaum hauv av yuav tsum tau rov qab mus rau lub hwj chim los ntawm PE kab, qhov kev tiv thaiv loj ntawm PE kab txwv qhov txhaum tam sim no, tiv thaiv cov cuab yeej tiv thaiv los ntawm kev ua raws sijhawm. Qhov kub thiab txias, arc, lossis lub txim hluav taws xob tsim tawm ntawm qhov txuas txuas vim qhov kev tiv thaiv siab tuaj yeem ua rau muaj hluav taws kub.
Hauv TN-C system, PEN kab feem ntau dhau los ntawm peb theem tsis sib npaug tam sim no. Txawm li cas los xij, nyob rau hauv qee lub lag luam xws li tshuab thiab textiles uas feem ntau muaj peb-theem sib npaug loads, qhov kev phom sij zais ntawm PEN kab davhlau ya nyob twg tsis raug kaw nruj nreem tsis yooj yim los kuaj xyuas vim qhov me me peb-theem tsis sib npaug tam sim no. Thaum muaj qhov txhaum loj dhau los, nws kuj tuaj yeem ua rau hluav taws.
Raws li kev txheeb xyuas ntawm cov laj thawj, cov kev ntsuas tiv thaiv tau raug npaj, suav nrog:
(1) Tiv thaiv qhov tshwm sim ntawm hluav taws xob hluav taws xob. ① Cov ntu ntu ntawm cov kab xaiv PE (PEN) yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm thermal stability thiab dynamic stability thaum lub sij hawm ua txhaum, thiab tsim nyog rau kev tiv thaiv ntawm txoj kab. Lub nteg Circuit Court yuav tsum tsis txhob muaj kev puas tsuaj. Kev sib txuas ntawm cov terminals thiab cov pob qij txha ntawm ntau cov xov hlau yuav tsum nruj thiab txhim khu kev qha, nrog kev ua haujlwm zoo Xaiv cov khoom siv hluav taws xob nrog cov txheej txheem rwb thaiv tsev, tsis muaj roj, thiab kom ntseeg tau tias arcing tsis tshwm sim sab nraud kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov khoom siv tiv thaiv overload thiab luv-circuit. Cov cuab yeej tiv thaiv (xws li peb-theem thiab ib-theem luv luv-circuit) thaum muaj kev sib tsoo lossis luv luv Siv RCD (cov khoom siv tiv thaiv tam sim no) los ua kev ntsuas los tiv thaiv hluav taws xob hluav taws xob.
(2) Tiv thaiv kom tsis txhob kis hluav taws. ① Siv cov hlua hluav taws xob thiab cov xaim hluav taws xob hauv thaj chaw uas muaj hluav taws kub nyhiab tshwm sim Siv cov txheej tiv thaiv hluav taws lossis cov hlua hluav taws kub. ③ Siv cov khoom siv tiv thaiv hluav taws kub rau kev sib khi.