I. Ngā Ariā Taketake o ngā Pouaka Tohatoha
Ko te pouaka tohatoha he taputapu matua o te pūnaha hiko e whakamahia ana mō te tohatoha pūngao hiko pokapū, te whakahaere i ngā ara iahiko me te tiaki i ngā taputapu hiko. Ka tohatohahia te pūngao hiko mai i ngā pūtake hiko (pērā i ngā whakawhiti hiko) ki ngā momo taputapu hiko, ā, ka whakauruhia ngā mahi tiaki pēnei i te taumaha rawa, te ara iahiko poto me te turuturu.

Ngā whakamahinga matua:

Te tohatoha me te whakahaere i te pūngao hiko (pēnei i te tuku hiko mō ngā rama me ngā taputapu hiko).

Te tiakitanga ara iahiko (taikaha rawa, ara iahiko poto, turuturu).

Aroturukihia te tūnga o te ara iahiko (te whakaaturanga ngaohiko me te iahiko).

II. Te Whakarōpūtanga o ngā Pouaka Tohatoha
Mā ngā horopaki tono:

Pouaka tohatoha whare: He iti te rahi, he iti te taumata tiaki, kei roto ko te tiaki turuturu, ngā pana hau, me ētahi atu.

Pouaka tohatoha ahumahi: He nui te kaha, he taumata tiaki teitei (IP54, neke atu rānei), e tautoko ana i te mana whakahaere ara iahiko matatini.

Pouaka tohatoha o waho: Ārai wai, ārai puehu (IP65, neke atu rānei), he pai mō ngā taiao tuwhera.

Mā te tikanga tāutanga:

Momo tāutanga kitea: Ka whakapiri tika ki te pakitara, he ngāwari ki te tāuta.

Momo huna: He mea whakauru ki te pakitara, he ātaahua ki te titiro atu engari he uaua te hanganga.

Mā te āhua hanganga:

Momo pumau: Ka tāutahia ngā wāhanga i runga i te āhua pumau, he iti te utu.

Momo pouaka (pouaka tohatoha ā-pūtau): Hoahoa ā-pūtau, he watea mō te tiaki me te whakawhānui.

III. Te Hanganga o ngā Pouaka Tohatoha
Tinana pouaka:

Rauemi: Mea whakarewa (pereti maitai hurihuri-matao, maitai kore waikura) mea kore-whakarewa rānei (kirihou hangarau).

Taumata tiaki: Ko ngā waehere IP (pēnei i te IP30, IP65) e tohu ana i ngā āheinga ātete ki te puehu me te wai.

Ngā wāhanga hiko o roto:

Ngā whati ara iahiko: Te parenga ki te taumaha rawa/poto-ara iahiko (pērā i ngā pana hau, ngā whati ara iahiko pouaka whakarewa).

Momotu: Momotuhia ā-ringa te pūtake hiko.

Pūrere ārai turuturu (RCD): Ka kite i te ia turuturu me ngā pakaru.

Mita hiko: Te ine i te pūngao hiko.

Pūwhakapā: Ka whakahaere mamao i te whakakā me te whakaweto o te ara iahiko.

Kaitiaki ngaru (SPD): Ka ārai i ngā whiunga uira, i te ngaohiko nui rawa rānei.

Ngā wāhanga āwhina:

Ngā pae pahi (ngā pae pahi parahi, konumohe rānei), ngā poraka whakamutunga, ngā rama tohu, ngā pā whakamatao, me ētahi atu.

Iv. Ngā Tawhā Hangarau o te pouaka tohatoha
Iahiko kua whakatauria: pērā i te 63A, 100A, 250A, me tīpako i runga i te mana katoa o te kawenga.

Ngaohiko whakatauranga: I te nuinga o te wā 220V (wāhanga-kotahi) 380V rānei (wāhanga-toru).

Te taumata tiaki (IP): pērā i te IP30 (ātete puehu), IP65 (ātete wai).

Te manawanui o te ara iahiko poto: Te wā hei ātete i te iahiko ara iahiko poto (pēnei i te 10kA/1s).

Te kaha pakaru: Ko te iahiko hapa mōrahi ka taea e te kaiwawao hiko te tapahi haumaru.

V. Aratohu Kōwhiri mō ngā Pouaka Tohatoha
E ai ki te momo kawenga:

Ara iahiko rama: Kōwhiria he whati ara iahiko iti (MCB) 10-16A.

Taputapu motuka: Me taurite ngā whakawhiti wera, ngā whati hiko motuhake rānei ki te motuka.

Ngā wāhi tairongo nui (pērā i ngā kaukau): Me tāuta he taputapu ārai turuturu (30mA).

Tātaitanga kaha

Ko te iahiko katoa he ≤ te iahiko whakatauranga o te pouaka tohatoha × 0.8 (tawhē haumaru).

Hei tauira, ko te mana kawenga katoa he 20kW (wāhanga-toru), ā, ko te iahiko he tata ki te 30A. He mea pai kia whiriwhiria he pouaka tohatoha 50A.

Te urutau ki te taiao

Taiao makuku: Kōwhiria te tinana pouaka kowiri tira + te taumata tiaki teitei (IP65).

Taiao pāmahana teitei: Me whakamahi ngā kōhao whakamarara wera, ngā pā hau rānei.

Ngā whakaritenga whānui:

Whakatapua te 20% o te wāhi takoto kau hei whakahaere i te tāpiri i ngā ara iahiko hou i muri mai.

Vi. Ngā Whakatūpato mō te Tāutanga me te Tiaki
Ngā whakaritenga tāutanga:

He maroke te wāhi, he pai te hauhautanga, kia matara atu i ngā rauemi mura.

He pono te hononga o te pouaka ki te whenua hei ārai i te tūponotanga o te turuturu hiko.

Ngā whakatakotoranga tae waea (waea ora whero/kōwhai/kākāriki, waea kūpapa kikorangi, waea whenua kākāriki kōwhai).

Ngā kaupapa matua mō te tiaki:

Tirohia i ia wā mēnā kua wetekina, kua waikura rānei te waea.

Horoia te puehu (kia kore ai e pāngia e ngā ara iahiko poto).

Whakamātauria te taputapu tiaki (pēnei i te pēhi i te pātene whakamātautau tiaki turuturu kotahi i te marama).

Vii. Ngā Raru me ngā Whakaotinga Noa
Ngā tūtukitanga pinepine

Take: Te taumaha rawa, te ara iahiko poto, te turuturu rānei.

Whakataurongoā: Momotuhia te kawenga rārangi i ia rārangi, ka kimi i te ara iahiko hapa.

Te whakawhāiti i te taputapu tiaki turuturu

Tērā pea: Kua pakaru te whakamarumaru o te ara iahiko, te turuturu o te hiko mai i ngā taputapu.

Maimoatanga: Whakamahia he megohmmeter hei whakamātautau i te ātete whakamarumaru.

Kei te wera rawa te pouaka.

Take: Te taumaha rawa, te kore rānei e pai te whakapā atu.

Otinga: Whakaitihia te kawenga, whakakīia rānei ngā poraka pito.

VIII. Ngā Ture Haumaru
Me tutuki i ngā paerewa ā-motu (pēnei i te GB 7251.1-2013 "Ngā Huinga Taputapu Whakawhiti Ngaohiko-Iti").

Me momotu te hiko i te wā e tāuta ana, e tiaki ana hoki, ā, me whakahaere te mahi e ngā tohunga hiko ngaio.

Kāore e whakaaetia te whakarerekē i ngā ara iahiko o roto i te wā e hiahiatia ana, te tango rānei i ngā taputapu tiaki.