Iimpawu ezine ezibalulekileyo zesixhobo sokukhusela ukuvuza (i-SPD)

Isixhobo sokukhusela esinyukayo (I-SPD) sisixhobo se-elektroniki esibonelela ngokhuseleko kwizixhobo ezahlukeneyo ze-elektroniki, izixhobo, kunye neentambo zonxibelelwano. Xa kwenzeka umbane okanye i-voltage ngequbuliso kwimigca yombane okanye kwiintambo zonxibelelwano ngenxa yokuphazamiseka kwangaphandle, i-surge protector inokuqhuba ngokukhawuleza kwaye iguqule i-surge ukuthintela umonakalo kwezinye izixhobo kwisekethe. Kukho iiparameter ezine ezibalulekileyo ekufuneka ziqwalaselwe xa kuhlalutywa i-SPD:

1. I-voltage yokusebenza eqhubekayo ephezulu (Uc) I-Uc ibhekisa kwi-voltage ephezulu ye-rms (RMS) okanye i-voltage ye-DC enokusetyenziswa kwimo yokukhusela i-SPD. Ngokuyintloko, imele i-voltage elinganisiweyo ye-SPD. Ixabiso le-Uc linxulumene nobomi benkonzo kunye nenqanaba lokukhusela i-voltage ye-SPD. Nangona ukukhetha ixabiso eliphezulu le-Uc kunokwandisa ubomi benkonzo yemveliso, kuya kwandisa ne-voltage eseleyo, nto leyo enobungozi kwinto ekhuselweyo.

2. Umbane okhutshwayo ngokugqithisileyo (In) In ngumbane ophezulu we-8/20μs current wave ehamba nge-surge protector. Umgangatho we-SPD ucacisa uthotho lwamaxabiso e-In. Xa uyila kwaye uvelisa imodeli ethile ye-SPD ukuze ufikelele kwinqanaba elithile, ixabiso le-In elihambelanayo likhethwa kuthotho lwe-In ukuze kuvavanywe. Uvavanyo oluphumeleleyo lumisela ixabiso elikhethiweyo njengexabiso le-In le-SPD.

3. Umlinganiselo ophezulu wokukhupha amandla kuvavanyo lweklasi yesi-2 (Imax) I-Imax imele umlinganiselo ophezulu womlinganiselo wamandla wangoku we-8/20μs ohamba nge-surge protector kuvavanyo lweKlasi yesi-2. Nangona inkcazo yale parameter ifana nomlinganiselo oqhelekileyo wokukhupha amandla (In), umgangatho we-SPD ubonelela ngoluhlu lwamaxabiso e-Imax ecaleni kothotho lwe-In, kwaye ngaphakathi kwinqanaba elifanayo, i-Imax > In. Ke ngoko, i-SPD ephumelele uvavanyo kwinqanaba elithile le-In ayiqinisekisi ukuba i-SPD enenqanaba elifanayo le-Imax nayo iya kupasa uvavanyo. Nangona i-In kunye ne-Imax zombini zixabiso eliphezulu lomlinganiselo wamandla wangoku we-8/20μs, ixabiso eliphezulu kunye nenani lamaxesha umlinganiselo wamandla odlula ngawo ngexesha lovavanyo zahlukile.

4. Inqanaba lokukhusela iVoltage (Phezulu), ekwaziwa ngokuba yi-residual voltage, libhekisa kwi-voltage enqumla i-SPD xa umsinga one-waveform ethile udlula kwi-SPD emva kokuba i-SPD iqalisiwe. Le parameter ibalulekile ukukhusela i-standing voltage yezixhobo ezikhuselweyo kwaye kufuneka ibe ngaphantsi kune-standing voltage yezixhobo ezikhuselweyo.

Ukuqonda nokuhlalutya ezi parameters kubalulekile kwizixhobo zokukhusela ukugqobhoza. Ukuqwalaselwa ngokufanelekileyo kunye nokukhethwa kwee-SPDs ngokusekelwe kwezi parameters kuya kuqinisekisa ukuba zibonelela ngokhuseleko olusebenzayo kwizixhobo ze-elektroniki, izixhobo kunye neentambo zonxibelelwano, ekugqibeleni kunciphisa umonakalo ovela ekugqobhozeni nasekugobeni.