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Mai karewa mai karewa (mai karewa) (wanda ake magana da shi azaman SPD), wanda ya dace da AC 50/60HZ, ƙimar ƙarfin lantarki 220V zuwa tsarin samar da wutar lantarki 380V (ko tsarin sadarwa), don walƙiya kai tsaye da tasirin walƙiya kai tsaye ko sauran kariyar wuce gona da iri ta dace da kariya. Bukatun kariya ta karuwa a cikin gidajen iyali, manyan masana'antu da filayen masana'antu.
Mai kare hawan hawan, kamar sauran kayan lantarki, yana da nasa sigogi.Abubuwan da ake amfani da su shine AC, kuma girman AC shine 50/60HZ, kuma ƙarfin da ake buƙata shine 230V ~ 380V;idan wutar lantarki nan take ya yi girma ko kuma ya yi ƙasa da ƙasa, ana iya amfani da shi don kariyar kayan aikin Wutar Lantarki, kuma yana da tasirin kariya akan hawan da ke ƙarƙashin rinjayar walƙiya.Ana buƙata don kayan aikin gida, kantunan kasuwa, gine-gine da sauran filayen masana'antu.Ya haɗu da hanyoyin kariya kamar lokaci-zuwa-lokaci, lokaci-zuwa-ƙasa da tsaka-tsaki-zuwa-ƙasa.
CHXI-G-40PVdirectvaysurge kariya ne yadu amfani a PV confluence akwatin, PV inverter, PV mai kula, PVDC majalisar da sauran kayan aiki.Rated ƙarfin lantarki upto1500VDC, matsakaicin fitarwa na yanzu 40kA, high-makamashi varistor, nanosecond amsa gudun, yadda ya kamata hana lalacewa lalacewa ta hanyar. walƙiya overvoltage zuwa photovoltaic ikon samar da tsarin.
Samfuran sun dace da GB 18802.1, GB50057 da IEC 61643-1 ma'auni.
Tare da yanayin gama gari (MC) da yanayin bambancin (MD) yanayin kariya. 35mm daidaitaccen jagorar jagorar shigarwa, layin sifili tare da haɗin 2.5-35mmwire, waya mai ƙasa tare da fiye da 6mm launi mai launi iri-iri iri-iri na jan ƙarfe, tsawon bai wuce ba. 500mm.
Yawancin lokaci ana shigar da shi a cikin majalisar rarrabawar DC, inverter photovoltaic, akwatin hotovoltaic da yawa.