Txiav txim siab lub cim kev nyab xeeb: Raws li kev lag luam uas yuav tsum tau muag, xaiv cov ntawv pov thawj kev nyab xeeb thiab cov qauv kev nyab xeeb ntawm lub fuse raj (UL standard lossis IEC standard fuse tube).
Txiav txim siab qhov ntev sab nraud: Xaiv qhov ntev ntawm lub fuse tube raws li qhov chaw nruab thiab txiav txim siab txog kev nyab xeeb daim ntawv pov thawj thiab cov qauv kev nyab xeeb.
Txiav txim siab tus qauv: Xaiv cov qauv ntawm lub fuse tube raws li cov yam ntxwv tam sim no ntawm kev tiv thaiv Circuit Court. Piv txwv li, yog tias tus yam ntxwv tam sim no ntawm kev tiv thaiv Circuit Court yog qhov tam sim no tas li, yuav tsum xaiv hom nrawm nrawm.
Txiav txim siab qhov ntsuas hluav taws xob: Txiav txim siab qhov ntsuas qhov ntsuas hluav taws xob ntawm lub fuse raj raws li qhov ntsuas hluav taws xob ntawm cov hluav taws xob tiv thaiv thiab kev siv cov kev cai. Piv txwv li, yog hais tias lub input voltage ntawm lub tiv thaiv Circuit Court yog 220V, ib tug fuse tube nrog ib tug rated voltage saum 220V yuav tsum tau xaiv, thiab 250V, 300V, 350V, thiab lwm yam yuav tsum tau xaiv; Txawm li cas los xij, xav txog cov nqi them, nws tsis tas yuav xaiv qhov ntsuas hluav taws xob ntau dhau.
Txiav txim siab qhov tsawg kawg nkaus tam sim no: Ua ntej txiav txim siab qhov ntsuas tam sim no ntawm lub fuse raj raws li qhov kev ua haujlwm ruaj khov tam sim no ntawm kev tiv thaiv Circuit Court thiab qhov cuam tshuam ntawm kev siv poob coefficient. Piv txwv li, yog tias qhov ruaj khov ua haujlwm tam sim no ntawm kev tiv thaiv hluav taws xob yog 1A, thiab UL tus qauv ncua sij hawm fuse raj raug xaiv, thiab qhov chaw ua haujlwm kub yog li 8 0 degree, qhov tsawg kawg nkaus ntsuas tam sim no ntawm fuse raj yuav tsum. yog: 1A × 1.25÷0.5=2.5A.
Txiav txim siab qhov tsawg kawg nkaus I2T ntawm lub fuse tube: Txiav txim siab I2T ntawm lub fuse raj raws li qhov surge I2T ntawm cov tiv thaiv Circuit Court. Piv txwv li, qhov surge I2T ntawm kev tiv thaiv Circuit Court yog 1 (A2S). Txhawm rau kom ntseeg tau tias lub raj fuse tuaj yeem tiv taus ntau dua 100,{7}} cuam tshuam, I2T ntawm lub raj fuse yuav tsum ntau dua: 1÷0.2=5 (A2S).