Hais txog kev tiv thaiv ntawm DC sab ntawm lub tshuab hluav taws xob photovoltaic, Tshooj 690.99 ntawm Tshooj 690-Photovoltaic Systems ntawm NASI/NFPA 70 National Electrical Code (Overcurrent) Nws tau raug qhia meej tias cov khoom siv thiab cov khoom siv ntawm photovoltaic subsystem circuit, photovoltaic output circuit, inverter tso zis hluav taws xob thiab lub zog cia roj teeb Circuit Court yuav tsum raug tiv thaiv raws li qhov yuav tsum tau muaj ntawm Tshooj 240 (Ceeb Toom: Tshooj 240 ntawm Kev Tiv Thaiv ntawm cov conductors thiab khoom siv); Lub" Hluav Taws Xob Hluav Taws Xob ntawm Cov Vaj Tsev -Part 7-712: Cov Lus Qhia Tshwj Xeeb rau Maritime installaTIions" TS EN ISO 60364-7-712: 2002 Qhov Chaw -Solar photovoltaic (PV) fais fab mov systems GB/T 16895.32-2008 Kev teeb tsa hluav taws xob hauv cov tuam tsev ntu 7-712: Hnub ci PV Fais Fab Kev Siv Hluav Taws Xob rau Kev Siv Tshwj Xeeb lossis Chaw (ua tiav Lub Ob Hlis 1, 2010). Txawm hais tias nws tau thov nyob rau hauv kev tiv thaiv overload ntawm DC sab tias thaum txuas txuas ntxiv tam sim no ntawm lub cable sib npaug los yog ntau dua 1.25 npaug ntawm ISC STC ntawm txhua qhov chaw (ISC STC yog qhov luv luv tam sim no raws li cov qauv ntsuas), Kev tiv thaiv overload rau PV hlua thiab PV array cables tuaj yeem tsis quav ntsej (cov no yog tus qauv 712.433.1 thiab.2), tab sis tus qauv kuj tau hais tias cov kev cai saum toj no tsuas yog rau kev tiv thaiv cable, thiab cov chaw tsim khoom' s specifications rau PV module tiv thaiv yuav tsum tau txiav txim siab. Nws kuj tau teev nyob rau hauv lub ntsiab lus ntawm PV array hlws ris lub thawv uas fuse siv tau rau kev tiv thaiv yog tias tsim nyog. GB / T 16895.32-2008 tsis yog cov kev cai nruj los teeb tsa lub laj thawj rau kev tiv thaiv cov khoom siv hluav taws xob, ntawm ib sab, tus qauv tsuas yog muab cov kev cai tsawg kawg nkaus, kom ntseeg tau tias kev siv; Tab sis lwm qhov laj thawj tseem ceeb yog cov qauv tseem tab tom tsim.
Tus qauv fuse IEC 60269-6: 2010 rau kev tiv thaiv lub hnub ci photovoltaic systems tau pom zoo los ntawm IEC pawg thawj coj hauv lub Kaum Hlis xyoo no, thiab yuav tshaj tawm rau lub Ib Hlis lossis Lub Ob Hlis 2011. Lub teb chaws tus qauv tseem yuav ua raws li kev txhim kho. Xyoo 2005 los yog ua ntej, UL tau tsim cov kev qhia tshwj xeeb rau cov fuse-txuas txuas uas tiv thaiv PV cell module cov hlua thiab PV arrays: Kawm 2529 Daim Ntawv Qhia Txog Kev Tshawb Fawb Txog Kev Siv Hluav Taws Xob-fuses rau PHOTOVOLTAIC SYSTEMS, qhov tseeb version ntawm 2010. Cov kev tshaj tawm ntawm cov qauv no qhia tau hais tias cov qauv tom ntej thiab cov ntawv pov thawj kev nyab xeeb ntawm IEC cov tswvcuab hauv xeev, suav nrog Tuam Tshoj, yuav suav nrog qhov teeb meem ntawm DC sab overcurrent tiv thaiv raws li NASI / NFPA 70 ua. Qhov tseeb, feem ntau ntawm cov tshuab photovoltaic uas twb muaj lawm hauv kev lag luam twb tau tsim thiab nruab nrog fuses. Cov duab hauv qab no, Holly PV Fuses HC10AR 1000V DC thiab HC10N 600V DC tau dav siv hauv PV PV txuas cov txee hauv fuse A txoj haujlwm, PV tiv thaiv NH00 1000V 100A thiab NH1 1000V DC Lub 200A BPV kuj tseem siv rau hauv txoj haujlwm fuse. txuas txee.
North American tus qauv NASI / NFPA 70 tau hais meej meej tias txhua yam khoom siv tiv thaiv ntawm DC sab xav tau DC specifications. Rau lub fuse ntawm kev tiv thaiv photovoltaic cell series, uas yog fuse A Nyob rau hauv daim duab, qhov ntsuas tam sim no nyob rau hauv yog ≥1.56 ISC (ISC yog luv luv tam sim no ntawm PV series) yuav tsum tau. Qhov ntsuas hluav taws xob tsis tsawg tshaj li qhov qhib hluav taws xob hluav taws xob VOC ntawm qhov ntsuas kub hauv cheeb tsam qis tshaj ntawm cov xov tooj ntawm tes photovoltaic, thiab qhov kho qhov tseem ceeb yog muab rau kev xam qhov ntsuas kub ntawm VOC; Thaum lub fuse B, uas tiv thaiv PV array, yuav tsum 1.25 txwv tam sim no I ≤In& lt; 1.56 ISC, cov xov hlau tshwj xeeb ntawm qhov chaw no yuav tsum tsawg dua 1.56 ISC, yog li nws tsim nyog coj qhov siab tshaj plaws tam sim no nyob rau hauv cov lus qhia tshwj xeeb hauv qab tus nqi ntawm 1.56 ISC.
Qhov pom zoo fuse tam sim no ntawm photovoltaic fuses Hauv IEC system yog 1.45 Hauv. Qhov pom zoo fusing tam sim no ntawm photovoltaic fuses sib haum rau US Subject 2529 technical specification yog 1.35 In. Hauv lwm lo lus, qhov tseeb nqa peev xwm ntawm photovoltaic fuses Hauv IEC system yog li 1.1-1.2 npaug ntawm US Subject 2529 fuse. Yog li ntawd, xav txog qhov sib txawv ntawm qhov tseeb bearing muaj peev xwm, lub photovoltaic fuse ntawm IEC system ntawm fuse A Nyob rau hauv daim duab yuav tsum tau hloov mus rau In≥1.42Is los ntawm kev xa mus rau cov qauv saum toj no In≥1.56 ISC. Yog li xam cov fuse specification tus nqi Nyob rau hauv raws li lub revised formula, thiab coj lub fuse uas tam sim no theem yog ntau dua tus nqi xam thiab ze tshaj rau tus nqi xam. Tsis tas li ntawd, cov lus qhia ntawm cov xov hlau yuav tsum tsis txhob tsawg dua IS, nyiam dua ntau dua 1.25IS. Ib yam li ntawd, PV fuse ntawm IEC system ntawm fuse B txoj haujlwm hauv daim duab yuav tsum xa mus rau cov qauv saum toj no. 1.56 ISC hloov mus rau hauv& lt; 1.42IIs, coj qhov siab tshaj plaws tam sim no nyob rau hauv serialized specification hauv qab no 1.42ISC xam tus nqi tam sim no. Thaum qhov kub nyob ib ncig ntawm lub fuse yog siab dua, xws li siab dua 45 lossis thaum ntau lub fuses raug ntsia ze rau ntawm lub thawv sib txuas, lub peev xwm yuav tsum raug txo, thiab lub peev xwm yuav tsum tau txo raws li cov lus qhia los ntawm cov chaw tsim khoom fuse.
Tag nrho cov saum toj no, nws yog ib qho tseem ceeb heev nyob rau hauv lub photovoltaic pv array nruab dc fuse, xaiv pv voltage ntsuam xyuas ntawm lub fuse los txiav txim siab photovoltaic panels yuav siv qhov qis tshaj ntawm qhov qhib Circuit Court voltage Voc, rated tam sim no yuav tsum tau txiav txim siab thaum kub siab tshaj. ntawm photovoltaic panels siv luv luv Circuit Court tam sim no yog, thiab lub zog ntawm cyclic load rau lub neej ua hauj lwm ntev, xyuas kom meej ntev-lub sij hawm ua hauj lwm nyob rau hauv lub premise ntawm qis kev ntsuam xyuas, thiaj li yuav ua tiav kev tiv thaiv.