SPD(Surge Protective Device, surge protector) inonyanya kushandiswa kudzivirira overvoltage inokonzerwa nekurova kwemheni kana mashandiro ekuchinja grid kubva mumidziyo inokuvadza. Mitengo nenzvimbo dzinoshanda dzeSPDS dzakagadzirwa nezvinhu zvakasiyana uye maumbirwo zvinosiyana.

Chinhu chikuru cheSPD i zinc oxide varistor (MOV), iyo ine mutengo wakaderera uye inokurumidza kupindura. Inoshandiswa zvakanyanya mukuchengetedza zvivakwa zvekugara, zvivakwa zvemabhizinesi, makabati ekuparadzira uye michina yeindasitiri. Mutengo weMOV type SPD wekugovera common low-voltage kazhinji unobva pamakumi kusvika kumazana eyuan.

SPD inoshandisa machubhu ekuburitsa gas discharge (GDT) ine simba rekutakura magetsi uye insulation performance yakakura, uye yakakodzera kudzivirira mitsetse yemagetsi isina simba munhare dzekutaurirana, nzvimbo dzedata, masisitimu ekuchengetedza, nezvimwewo. Mutengo wayo unowanzo kuve wakakwira kupfuura wezvigadzirwa zveMOV zvakajairika.

Zvigadzirwa zveSPD zvepamusoro zvinoshandisa chimiro cheMOV+GDT. Zvimwe zvigadzirwa zvinewo zvishandiso zvekufamba nekupisa, zviratidzo zvekutadza uye mabasa ekunyevera ari kure, izvo zvinopa kuchengetedzeka kwakanyanya uye kuvimbika. Zvakakodzera nzvimbo dzakakosha dzakadai sezvipatara, masisitimu emagetsi, nzira dzekufambisa njanji, nzvimbo dzemagetsi e photovoltaic uye masisitimu ekutonga otomatiki emaindasitiri, nemitengo inotangira pamazana akati wandei kusvika kuzviuru zvakati wandei zveyuan.

Kune zvivako zvemahofisi, dzimba dzekugara nezvitoro, mhando dzeMOV SPDS dzinogona kusarudzwa. Kune nzvimbo dzine zviitiko zvemheni zvinowanzoitwa, makamuri ekutaurirana, nzvimbo dzedata uye mapurojekiti akakosha emaindasitiri, zvinokurudzirwa kusarudza SPDS ine simba rakawanda kana kuti rine simba remagetsi kuti iwedzere dziviriro yemheni uye kugona kwekudzivirira magetsi akawanda uye kuve nechokwadi chekuti michina inoshanda kwenguva refu.

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