Nā hāmeʻa pale poʻomanaʻo pehea e koho ai


E like me ka ʻike o nā poʻe āpau, pale i nā pono hoʻomalu a i ʻole nā ​​mea pale pale (SPD) e pale i nā lako uila e kūʻē i nā uila i hana ʻia e ka uila. ʻO kēlā, ʻaʻole maʻalahi ka ʻike i kahi e koho ai.

Ke koho nei i ka arrester piʻi kūpono a me nā mea haki kaapuni pale e pili ana i ka noʻonoʻo ʻana i ka laulā o nā palena e pili ana i nā ʻano o nā pale pale luʻu, nā hoʻonohonoho wāwahi, a me ka loiloi i ka pilikia.

E hoʻāʻo e ʻike i nā mea me ke akāka…

Waiho i ka palapala, e kiʻi hou aʻe e pili ana i ka hāmeʻa pale (Circuit Breaker a i ʻole Fuse) e pili ana me Surge Protective Device.

ʻO ka mea mua, wehewehe nā kūlana o kēia manawa ʻekolu mau mahele o nā pono pale pale no nā uila uila haʻahaʻa.

He aha nā lakohana pale pale e koho ai a ma hea lākou e hoʻouka ai?

Pono e hoʻokokoke i ka uila mai kahi manaʻo holoʻokoʻa. Kaukaʻi ʻia i ka noi (nā mea kanu ʻoihana nui, nā kikowaena ʻikepili, nā haukapila, a me nā mea ʻē aʻe), pono e hoʻohana ʻia kahi ʻano loiloi pilikia e alakaʻi ai i ke koho ʻana i ka pale kūpono (ʻōnaehana pale uila, nā mea pale pale). ʻO nā ʻōkuhi aupuni, ʻoi aku, e koi paha iā ia e hoʻohana i ke kūlana EN 62305-2 (Loiloi loiloi).

I nā hihia ʻē aʻe (nā hale, nā keʻena, nā hale ʻike ʻole i nā pōpilikia ʻoihana), ʻoi aku ka maʻalahi o ka lawe ʻana i kēia ʻano palekana aʻe:

I nā kūlana āpau, e hoʻonohonoho ʻia kahi mea pale pale 2 kāhue i ka papapihi komo hope loa o ka hoʻokomo uila. A laila, e loiloi i ka mamao ma waena o kēlā hāmeʻa pale pale a me nā pono e pale ʻia. Ke ʻoi aku kēia mamao ma mua o 30 mika, pono e hoʻokomo i kahi mea pale pale pale (ʻAno 2 a i ʻole ʻAno 3) ma kahi kokoke i nā pono hana.

A me ke kani ʻana o nā hāmeʻe pale pale?

A laila, ke ʻano o ka nui o nā hāmeʻa pale lūlū ʻo Type 2 i ka ʻāpana hōʻike (kaulike, waena, kiʻekiʻe): aia nā mana hoʻokuʻu he ʻokoʻa no kēlā me kēia ʻano (Imax = 20, 40, 60 kA (8 / 20μs)).

No nā hāmeʻa pale pale piʻi 1, ʻo ka palena iki ke koi ʻana i kahi mana hoʻokuʻu o IKapu = 12.5 kA (10 / 350μs). Koi ʻia paha nā kumukūʻai kiʻekiʻe e ka loiloi weliweli ke noi ʻia ka hope.

Pehea e koho ai i nā hāmeʻa pale e pili ana i nā hāmeʻa pale pale?

ʻO ka mea hope loa, e koho ʻia ka mea pale e pili ana i ka mea pale pale (circuit breaker a i ʻole fuse) e like me ke kaapuni pōkole ma kahi o ka hoʻouka ʻana. I nā huaʻōlelo ʻē aʻe, no ka papa kuapo uila noho, kahi mea pale me kahi ISC E koho ʻia ʻo 6 kA.

No nā noi keʻena, ʻo ka ISC ʻo ka mea maʻamau <20 kA.

Pono nā mea hana e hoʻolako i ka papaʻaina no ka hoʻohui ʻana ma waena o ka pale pale pale a me ka pale pale e pili ana. Hoʻohui nā mea hana pale pale hou aʻe i kēia mea pale i ka pā like.

Kumumanaʻo koho maʻalahi (ke kāpae ʻia i ka loiloi piha makaʻu)

Kaomi i kēia pihi, e kiʻi hou aʻe e pili ana i ka pale ʻana i ka piʻina pehea e koho ai.