Raws li tus qauv IEC61730-2[2], photovoltaic modules yuav tsum muaj peev xwm tiv taus qhov rov qab tam sim no overload. Nws cov kev xav tau rau kev ntsuas rov qab overcurrent yog raws li hauv qab no: Yog tias siv photovoltaic module nrog qhov siab tshaj plaws fuse tam sim no ntawm 15A, nws yuav tsum tau sim rau 2 teev ntawm 20.25A (1.35 zaug), thiab cov modules yuav tsum tsis yog. -flammable thiab tiv tauj nrog cov modules. Cov ntaub ntawv ntaub so ntswg yuav tsum tsis muaj qhov kub hnyiab lossis kub hnyiab, thiab MST 17 kev sim (kev ntsuas ntub dej tam sim no) yuav tsum ua tau raws li qhov yuav tsum tau ua thaum xub thawj.
Yog li ntawd, photovoltaic modules tau ntawv pov thawj raws li IEC 61730-2 yuav tsum muaj peev xwm tiv taus 1.35 npaug ntawm qhov rov qab tam sim no rau 2h.
Raws li cov kev xav tau saum toj no, txhawm rau txhim kho kev nyab xeeb ntawm photovoltaic modules thiab ua kom lawv lub neej ntev, kev tiv thaiv kev tiv thaiv yuav tsum tau coj mus rau DC tsheb npav ntawm sab ntawm photovoltaic inverter (los yog DC combiner lub thawv). Yog li, cov kev cai ntawm IEC 60269-6[3] tus qauv rau photovoltaic fuses (15A) yog: "Nws yuav tsum tau tshuab tsis pub dhau 1 teev ntawm qhov tam sim no ntawm 21.75A (1.45 zaug)". Hauv UL2579 [4] tus qauv, nws yuav tsum tau "fuse hauv 1 teev ntawm qhov tam sim no ntawm 20.25A (1.35 zaug)".
Nyob rau hauv cov nqe lus ntawm qhov rov qab tam sim no overload muaj peev xwm ntawm cov khoom siv (IEC61730-2), cov kev cai ntawm UL tus qauv yog qhov tsim nyog, thiab IEC 60269-6 tus qauv kuj tseem yuav kho qhov tsis sib xws hauv nws cov kev cai: rau qhov ntsuas tam sim no qis dua 32A (suav nrog 32A) Lub fuse yuav tsum dhau 1.35 npaug ntawm qhov ntsuas tam sim no yuav tsum tau tshuab hauv 1h. Cov tuam txhab fuse tseem ceeb uas tau teb sai sai rau cov thev naus laus zis, xws li Bussmann thiab Littelfuse, kuj tau hloov kho cov khoom lag luam uas yuav tsum tau ua rau cov kev tsis sib haum xeeb saum toj no thaum tsim photovoltaic tshwj xeeb fuses.
Yog li ntawd, thaum lub fusing tam sim no ntawm lub fuse tsis ntau tshaj qhov kev txwv tam sim no uas lub photovoltaic module tuaj yeem tiv taus thiab lub sijhawm fusing tsis ntau dua li lub sijhawm tam sim no uas lub photovoltaic module tuaj yeem tiv taus, lub fuse tuaj yeem tiv thaiv photovoltaic module.