Ma Surge Protective Devices (SPDs) amapereka chitetezo kumayendedwe amagetsi ndi ma spikes, kuphatikiza omwe amachititsidwa mwachindunji kapena mwanjira ina ndi mphezi. Atha kugwiritsidwa ntchito ngati zida zonse kapena ngati zida zamagetsi.
Dongosolo la Photovoltaic (PV) limasintha mphamvu ya dzuwa kukhala magetsi achindunji. Dongosolo la PV limachokera ku makina ang'onoang'ono, okwera padenga kapena ophatikizana ndi nyumba okhala ndi mphamvu kuchokera pa ochepa mpaka makumi angapo a kilowatts, kupita kumalo opangira magetsi opangira magetsi mazana mazana a megawati. Mphamvu zomwe zingayambitse mphezi zimawonjezeka ndi kukula kwa dongosolo la PV. M'malo okhala ndi mphezi pafupipafupi, makina a PV osatetezedwa amawonongeka mobwerezabwereza komanso kuwonongeka kwakukulu. Izi zimabweretsa kukonzanso kwakukulu ndi ndalama zosinthira, kutsika kwadongosolo komanso kutayika kwa ndalama. Zida zodzitchinjiriza bwino (SPDs) zidzachepetsa kukhudzidwa kwa mphezi.
Zida zamagetsi zowoneka bwino zamakina a PV monga AC/DC Inverter, zida zowunikira ndi gulu la PV ziyenera kutetezedwa ndi zida zodzitchinjiriza (SPD).
Kuti mudziwe gawo loyenera la SPD pamakina a PV ndikuyika kwake, muyenera kudziwa:
1.kachulukidwe ka mphezi kozungulira;
2.kutentha kwa ntchito kwa dongosolo;
3. mphamvu yamagetsi;
4.dongosolo lachidule la dera lamakono;
5. mlingo wa waveform umene uyenera kutetezedwa
motsutsana (mphezi yosalunjika kapena yolunjika); ndi kutulutsa kwadzidzidzi.
SPD yomwe imaperekedwa pazotulutsa za dc iyenera kukhala ndi dc MCOV yofanana kapena yokulirapo kuposa mphamvu yamagetsi yamagetsi yamagetsi yapagulu.
THOR TRS3-C40 mndandanda wamtundu wa 2 kapena Type 1+2 DC SPDs ya PV solar system imatha kukhala ngati Ucpv DC500V,600V,800V,1000V,1200V, ndi max 1500v.