Me pēhea te tāuta i ngā pūnga pakitara epoxy resin?

Te tāutanga ongā pūwero pakitara epoxyHe mahi hiko tino tika, he tino whakahaeretia hoki, e rua ngā wāhanga matua: te whakaurunga-mua (ka tāutahia i te wā kotahi i te hanganga pakitara) me te whakaurunga-muri (ka tāutahia i muri i te hanganga o te pakitara). Ko ngā mahi tāutanga whānui me ngā kaupapa matua e hangai ana ki ngā paerewa ahumahi (pēnei i te GB 50149-2010, DL/T 5221-2016) e whai ake nei.

I. Ngā Hipanga Tāutanga Whānui
1. Te Whakarite i mua i te Tāutanga
Manatoko tawhā: Whakaūtia kei te rite te ngaohiko whakatauranga, te iahiko, me te tawhiti ngokingoki o te pūangi ki ngā tuhi hoahoa, ā, tirohia mēnā he ngatata, he pakaru rānei kei te āhua.
Te Ine me te Taunga: Whakamahia he rārangi taumata taiaho, he rārangi tioka rānei hei tohu i te rārangi pokapū o te pakitara hei whakarite i te tika o te tūranga o te kōhao, ā, kia kore ai e pēhia te pae pahi, te taura rānei ina pēhia mā roto i muri mai.
Te tukatuka i ngā kōhao: Ko te whānui o te kōhao he 5-10mm te nui ake i te whānui o waho o te pūwero kia taea ai te whakarerekē me te whakakī i ngā rauemi hiri. Me whakangawari te taha o te kōhao, ā, me tango ngā kōhao hei ārai i te kino o te taura, o te mata rānei o te pūwero.
2. Te pūTe Whakamau me te Hiri i te Whakaurunga
Tikanga Whakamau: Mō ngā pūwero kapia epoxy me ngā parirau whakarewa (pērā i ngā parirau konumohe), ka whakamahia ngā pūtu whānui, ngā punga matū rānei hei whakamau i ngā parirau i ngā taha e rua o te pakitara. Ko te wā whakamau e taunakitia ana he ≤ 300mm kia kore ai te pūwero e wetekina i te wā e wiri ana.
Te Whakakī Hiri: He taahiraa nui tēnei mō te ārai wai, te ārai ahi, me te ārai i ngā kiore.
Te Whakakī i te Āputa: Me whakakī te āputa porowhita i waenganui i te pūmau me te pakitara ki te putty ātete ahi, ki te hiri ātete ahi rānei, me te matotoru e taunakitia ana kia ≥ 20mm kia mau ai te hiri matotoru, kāore he āputa.
Maimoatanga Ārai Wai: Mō te urunga ki te pakitara o waho, ki ngā taiao haukū rānei, ko te pito o waho o tepūme whakapiko ki raro i te 15° – 30°, ā, me tāuta hoki he taupoki ārai wai hei ārai i te rerenga mai o te wai ua.
3. Te Whakaurunga me te Hononga o te Arataki
Parenga Whakauru: I mua i te whakauru i ngā pae pahi, i ngā taura rānei, tirohia mēnā he maeneene te pakitara o roto o te pū. Mō ngā taura, he mea pai kia whakatakotoria he ngongo tiaki (pērā i te ngongo kōpikopiko) ki te wāhanga whakauru hei ārai i ngā taha koi kei rakuraku i te paparanga whakamarumaru.
Te Whakakīkī Hononga: I te wā e hono ana i te pūmau, me whakakīkī ngā pūtu ki te taipana paerewa hei karo i te wera ā-rohe nā te kore e pai te pā. I muri i te hononga, tirohia mēnā kei te ora tonu te mowhiti hiri hei ārai i te urunga mai o te makuku.
4. Whakamātautau i muri i te tāutanga
Whakamātautau Ārai: I muri i te tāutanga, me whakamātau te ātete ārai ki te whakamahi i te mita megohm 2500V. Ko te uara kua tohua ko te ≥1000MΩ (e ai rānei ki ngā paerewa motuhake).
Whakamātautau Ngaohiko Ātete: Mō ngā pūngao hiko-tiketike (pēnei i te 10kV me runga ake), me whakahaere he whakamātautau ngaohiko ātete auau mana (hei tauira, ko te pūngao 10kV i tukuna ki te 42kV/5min me te kore e pakaru).
II. Ngā Whakatūpato Matua
Kāore e Pātōtō Pakari: Ahakoa he kaha te kapia epoxy, kāore tōna ātete pānga i te rite ki te kaha o te konganuku. I te wā tāutanga, kāore rawa e whakaaetia kia pā tika te tinana o te pūwero ki te hama, ki ētahi atu mea pakeke rānei, hei ārai i ngā kapiti moroiti i roto i te paparanga whakamarumaru o roto, ka arahi pea ki te tukunga haurua.
Te Ārai me te Horoi i te Makuku: I mua i te tāutanga, murua ngā mata o roto, o waho hoki o te pūwero ki te waipiro korewai kia kore ai he puehu, he hinu rānei e puta. Ina mahi ana i te rangi makuku, me mahi i ngā mahi ārai makuku hei ārai i te haukū kei pā ki te mahi whakamahana.
Te Whakawhānui me te Whakaiti: Mō ngā taiao he hononga whānui, he rerekētanga pāmahana nui rānei, me waiho he āputa 10-15mm mō te whānui me te whakaiti i waenganui i te pūwero me te ara iahiko, me tāuta rānei he taurite rapa hei ārai i te whakarerekētanga o te pūwero nā te whānui me te whakaiti wera.
Ngā Whakaritenga Whakawhenua: Mena he pare whakarewa, he flange whakarewa rānei te pū, me whakawhenua pono, ā, me ≤4Ω te ātete whakawhenua hei whakakore i te ngaohiko whakaputa.
III. Te Whakahaere i ngā Wāhanga Motuhake
Tāutanga Whakauru: I mua i te ringihanga o te pakitara raima, me whakauru te pū ki tōna tūranga. I tēnei wā, me aro nui ki te tika o te tūnga kia kore ai e neke te pū i te wā e ringihanga ana. Me puta ngā pito e rua o te pū i te pakitara neke atu i te 50mm hei whakahaere i te hiri i te wāhanga o muri mai.
Tāutanga ki Waho: Ko ngā pū whakapū momo ki waho he maha ngā kākahu ārai-parahanga. I te wā e tāuta ana, kia tūpato ki te ahunga o ngā kākahu (ki raro iho), ā, horoia tonutia te paru i runga i ngā kākahu hei ārai i te pupuhi puehu nā te kohikohinga puehu.
Tohutohu Haumaru: Me mahi te mahi tāutanga i roto i te āhua whakakore hiko, ā, me whakairi he tohu whakatūpato "Kaua e Katia". E taunakihia ana kia whakahaerehia te tāutanga o ngā pū hiko ngaohiko teitei e ngā tohunga hiko whai tohu.

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