IEC 61643-31-2018 Cov Kev Xav Tau thiab cov hau kev ntsuas rau photovoltaic
IEC 61643-31: 2018 muaj feem xyuam rau Surge Protective Devices (SPDs), npaj rau kev tiv thaiv surge tiv thaiv tsis ncaj thiab ncaj qha cuam tshuam ntawm xob laim lossis lwm yam overvoltages. Cov khoom siv no yog tsim los txuas rau DC sab ntawm kev teeb tsa photovoltaic ntsuas txog 1 500 V DC. Cov khoom siv no muaj tsawg kawg yog ib qho tsis yog-linear tivthaiv thiab yog npaj los txwv cov surge voltages thiab hloov cov surge tam sim no. Cov yam ntxwv ntawm kev ua tau zoo, kev xav tau kev nyab xeeb, cov txheej txheem rau kev sim thiab kev ntsuas tau tsim. SPDs ua raws li tus qauv no tshwj xeeb tshwj xeeb rau kev teeb tsa ntawm DC sab ntawm photovoltaic generators thiab DC sab ntawm inverters. SPDs rau PV systems nrog lub zog cia (xws li roj teeb, lub tsev txhab nyiaj capacitor) tsis them. SPDs nrog cais cov tswv yim thiab cov zis tawm uas muaj cov kev cuam tshuam tshwj xeeb ntawm cov davhlau ya nyob twg (tseem hu ua ob-chaw nres nkoj SPDs raws li IEC 61643-11: 2011) tsis them. SPDs ua raws li tus qauv no yog tsim los txuas mus tas li qhov twg kev sib txuas thiab kev cuam tshuam ntawm SPDs ruaj khov tuaj yeem ua tiav siv lub cuab yeej. Cov qauv no tsis siv rau SPDs portable.
