Izici ezine ezibalulekile zedivayisi yokuvikela ukukhuphuka (i-SPD)

Idivayisi yokuvikela yokuqhuma (I-SPD) iyidivayisi kagesi ehlinzeka ngokuvikelwa kokuphepha kwemishini ehlukahlukene kagesi, izinsimbi, kanye nemigqa yokuxhumana. Lapho kwenzeka ukwanda kwamandla kagesi noma kwamandla kagesi ngokuzumayo emigqeni kagesi noma emigqeni yokuxhumana ngenxa yokuphazamiseka kwangaphandle, isivikelo sokukhuphuka kwamandla kagesi singahambisa ngokushesha futhi siguqule ukukhuphuka kwamandla kagesi ukuze kuvinjelwe ukulimala kweminye imishini esesekethe. Kunemingcele emine ebalulekile okufanele icatshangelwe lapho kuhlaziywa i-SPD:

1. I-voltage yokusebenza eqhubekayo ephezulu (Uc) I-Uc ibhekisela ku-voltage ephezulu ye-rms (RMS) noma i-voltage ye-DC engasetshenziswa kwimodi yokuvikela ye-SPD. Empeleni, imelela i-voltage elinganisiwe ye-SPD. Inani le-Uc lihlobene nokuphila kwesevisi kanye nezinga lokuvikela i-voltage ye-SPD. Nakuba ukukhetha inani eliphakeme le-Uc kungandisa impilo yesevisi yomkhiqizo, kuzokwandisa ne-voltage esele, okulimaza into evikelwe.

2. Ugesi wokukhipha ojwayelekile (In) In ungugesi ophezulu wegagasi lamanje elingu-8/20μs eligeleza ngesivikelo sokukhuphuka. Izinga le-SPD licacisa uchungechunge lwamanani e-In. Lapho kuklanywa futhi kukhiqizwa imodeli ethile ye-SPD ukuze kufinyelelwe izinga elithile, inani le-In elihambisanayo likhethwa ochungechungeni lwe-In ukuze kuhlolwe. Ukuhlolwa okuphumelelayo kunquma inani elikhethiwe njengenani le-In le-SPD.

3. Umthamo wokukhipha ophezulu ekuhlolweni kwekilasi II (Imax) I-Imax imelela umthamo wokukhipha ophezulu wegagasi lamanje elingu-8/20μs eligeleza ngesivikelo sokukhuphuka ekuhlolweni kwekilasi II. Nakuba incazelo yale pharamitha ifana nomthamo wokukhipha ojwayelekile (In), indinganiso ye-SPD inikeza ububanzi bamanani e-Imax eduze kochungechunge lwe-In, futhi ngaphakathi kwezinga elifanayo, i-Imax > In. Ngakho-ke, i-SPD edlula ukuhlolwa ezingeni elithile le-In ayiqinisekisi ukuthi i-SPD enezinga elifanayo le-Imax nayo izodlula ukuhlolwa. Nakuba i-In kanye ne-Imax kokubili kuyinani eliphakeme legagasi lamanje elingu-8/20μs, inani eliphakeme kanye nenani lezikhathi umkhawulo wokukhipha ngesikhathi sokuhlolwa kuhlukile.

4. Izinga lokuvikela i-Voltage (Phezulu), elaziwa nangokuthi i-residual voltage, libhekisela ku-voltage kuyo yonke i-SPD lapho ugesi one-waveform ethile ugeleza nge-SPD ngemva kokuba i-SPD iqaliwe. Le pharamitha ibalulekile ukuvikela i-standing voltage yemishini evikelwe futhi kufanele ibe ngaphansi kune-standing voltage yemishini evikelwe.

Ukuqonda nokuhlaziya lezi zinhlaka kubalulekile kumadivayisi okuvikela ukukhuphuka. Ukucatshangelwa okufanele nokukhetha ama-SPD ngokusekelwe kulezi zinhlaka kuzoqinisekisa ukuthi ahlinzeka ngokuvikelwa okusebenzayo kwemishini kagesi, izinsimbi kanye nemigqa yokuxhumana, ekugcineni kuncishiswe umonakalo ovela ekukhuphukeni nasekukhuphukeni.