Kusiyana pakati pa Chipangizo Choteteza Kuthamanga ndi Choteteza Kupitirira Mphamvu

Zipangizo zoteteza mafunde ndi zoteteza mafunde ndi zida ziwiri zoteteza zida zamagetsi zomwe zimagwiritsidwa ntchito kwambiri. Zitha kuchepetsa kapena kutulutsa mafunde osakhalitsa mu dongosolo lamagetsi ndikuletsa zida zamagetsi kuti zisawonongeke ndi mphezi kapena zifukwa zina. Komabe, mfundo zawo zogwirira ntchito, zizindikiro za magwiridwe antchito, zochitika zogwiritsira ntchito, ndi miyezo ya dziko lonse ndizosiyana. Nkhaniyi ifananiza ndikuwunika zoteteza mafunde ndi zoteteza mafunde kuchokera mbali zinayi izi kuti owerenga athe kusankha ndikugwiritsa ntchito bwino zida ziwirizi zoteteza.

Chipangizo Choteteza Kuwonjezeka (SPD) ndi chipangizo chamagetsi chotsika chomwe chimagwiritsidwa ntchito m'makina ogawa magetsi otsika kuti achepetse kupitirira mphamvu kwa nthawi yomweyo komanso kutulutsa mphamvu kwa mphamvu. Gawo lake lalikulu ndi zinc oxide varistor (Metal Oxide Varistor, MOV), yomwe ili ndi mawonekedwe a nonlinear voltage-current, kutanthauza kuti, pamene magetsi ogwiritsidwa ntchito ali otsika kuposa malire ake, kukana kwake kumakhala kwakukulu kwambiri ndipo pafupifupi palibe magetsi odutsa; Pamene magetsi ogwiritsidwa ntchito ali pamwamba pa malire ake, kukana kwake kumachepa mofulumira, kudutsa mphamvu zambiri. Mwanjira imeneyi, pamene kupitirira mphamvu kwa nthawi yomweyo kumachitika mu gridi yamagetsi, choteteza kupitirira mphamvu chidzayatsa mwachangu ndikutulutsa mphamvu yamagetsi kupita ku mzere wapansi, potero kuteteza zida zamagetsi zotsatira.

Choteteza Mphamvu Yopitirira Mphamvu (OVP) ndi chipangizo chomwe chimatha kudula mphamvu mwachangu komanso mwachangu. Chigawo chake chachikulu ndi sensa yamagetsi (Voltage Sensor), yomwe imatha kuzindikira kusintha kwa magetsi mu gridi yamagetsi ndipo imalumikizidwa ku dera lowongolera. Pamene magetsi mu gridi yamagetsi apitirira malire omwe adakhazikitsidwa, dera lowongolera lidzayambitsa switch kuti idule magetsi, potero kuteteza zida zamagetsi zomwe zikubwera.