SPD(Mea Palekana Piʻi, pale piʻi) hoʻohana nui ʻia e pale aku i ka overvoltage transient i hoʻokumu ʻia e nā hahau uila a i ʻole nā ​​hana hoʻololi grid mai ka hōʻino ʻana i nā lako. ʻOkoʻa nā kumukūʻai a me nā wahi kūpono o SPDS i hana ʻia me nā mea like ʻole a me nā hale.

ʻO ka ʻāpana koʻikoʻi maʻamau o SPD ʻo ia ka zinc oxide varistor (MOV), he haʻahaʻa ke kumukūʻai a he wikiwiki ka pane ʻana. Hoʻohana nui ʻia ia i ka pale ʻana i nā hale noho, nā hale kalepa, nā keʻena hoʻolaha a me nā lako ʻoihana. ʻO ke kumukūʻai o ka MOV type SPD no ka hoʻolaha haʻahaʻa haʻahaʻa maʻamau mai nā ʻumi a i nā haneli o yuan.

ʻO SPD e hoʻohana ana i nā paipu hoʻokuʻu kinoea (GDT) he mana lawe kiʻekiʻe a me ka hana insulation, a kūpono ia no ka pale ʻana i nā laina au nāwaliwali i nā kikowaena kumu kamaʻilio, nā kikowaena ʻikepili, nā ʻōnaehana palekana, a me nā mea ʻē aʻe. ʻOi aku ke kiʻekiʻe o kona kumukūʻai ma mua o nā huahana MOV maʻamau.

E hoʻohana nā huahana SPD kiʻekiʻe i kahi hoʻonohonoho hui MOV + GDT. Hoʻolako pū ʻia kekahi mau huahana me nā mea hoʻokele wela, ka hōʻike hewa a me nā hana alarm mamao, e hāʻawi ana i ka palekana a me ka hilinaʻi kiʻekiʻe. He kūpono lākou no nā wahi koʻikoʻi e like me nā haukapila, nā ʻōnaehana mana, ke kaʻaahi kaʻaahi, nā kikowaena mana photovoltaic a me nā ʻōnaehana hoʻomalu automation ʻoihana, me nā kumukūʻai mai kekahi mau haneli a i kekahi mau tausani yuan.

No nā hale keʻena maʻamau, nā hale noho a me nā hale kūʻai, hiki ke koho ʻia nā ʻano SPDS MOV maʻamau. No nā wahi me nā hana uila pinepine, nā lumi kamaʻilio, nā kikowaena ʻikepili a me nā papahana ʻoihana koʻikoʻi, ua ʻōlelo ʻia e koho i nā SPDS i hui pū ʻia a i ʻole ke au kiʻekiʻe e hoʻonui i ka pale uila a me nā hiki ke pale overvoltage o ka ʻōnaehana a hōʻoia i ka hana paʻa lōʻihi o nā lako.

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