Hei te umanga tino rongonui i Wenzhou, he roa te hītori whanaketanga o YUANKY me te mekameka ahumahi katoa. He tino whakataetae hoki ā mātou hua i te mākete. pērā iMCB.

Ko te MCB (Miniature Circuit Breaker, small circuit breaker) tētahi o ngā taputapu tiaki pito e whakamahia whānuitia ana i roto i ngā pūnaha tohatoha hiko iti-ngaohiko. He iti te rahi, he watea te whakahaere me te tiaki tika, ā, he whānuitia te whakamahinga i roto i ngā raina tohatoha o ngā whare ahumahi, arumoni me ngā whare ā-iwi, e mahi ana i ngā mahi matua pērā i te taumaha o te ara iahiko me te tiaki ara iahiko poto. E whai ake nei he tātaritanga taipitopito o ōna āhuatanga mahi mai i ngā āhuatanga maha pērā i ngā mahi matua, ngā āhuatanga hangarau, me ngā āhuatanga tono.

I. Mahi Tiaki Matua: Whakarite kia haumaru te mahi a te ara iahiko

Ko te uara matua o te MCB kei roto i te tiakitanga haumaru o ngā raina tohatoha me ngā taputapu hiko. Ko tana mahi tiaki ka tutukihia mā roto i ngā tikanga mahi tika, tae atu ki ngā momo tiakitanga matua e rua e whai ake nei:

1. Mahi tiaki taumaha

Ina mahi noa te ara iahiko, kei roto te iahiko i te awhe whakatauranga. Heoi, ina nui rawa ngā taputapu hiko, ina roa rānei te taumaha o te ara iahiko, ka nui ake te iahiko i roto i te raina i te uara whakatauranga, ka wera ake ngā waea. Ki te roa te taumaha, ka tawhito pea te whakamahana, ka poto ngā ara iahiko, tae atu ki ngā ahi. Ka tutuki te tiaki taumaha o te MCB mā te whakamahi i tētahi taputapu whakaweto wera rīpene rua-whakarewa: ina nui ake te iahiko i te uara whakatauranga, ka piko, ka huri te rīpene rua-whakarewa nā te wera i hangaia e te iahiko, ka akiaki i te tikanga whakaweto kia mahi, ka huaki ngā hononga o te kaiwawao ara iahiko, ka tapahia te ara iahiko.

He āhuatanga wā-whakamuri tōna parenga taumaha, arā, ko te nui ake o te ia taumaha, ko te poto ake o te wā mahi. Hei tauira, ina 1.3 ngā wā o te ia i te ia kua whakatauria, ka roa pea te wā mahi mō ngā hāora maha. Ina eke te ia ki te ono ngā wā o te ia kua whakatauria, ka taea te whakapoto i te wā mahi ki roto i ētahi hēkona torutoru. Ehara i te mea ka karo noa i te hinganga koretake i puta mai i te taumaha iti mō te wā poto, engari ka tere hoki te tapahi i te ara iahiko mēnā he taumaha nui, ka tutuki ai te parenga ngāwari me te pono.

2. Mahi tiaki ara-poto

Ko te ara iahiko poto tētahi o ngā hapa tino morearea o ngā ara iahiko, e puta pinepine ana i te kino o te whakamarumaru o ngā waea, o ngā hapa ā-roto rānei o ngā taputapu. I tēnei wā, ka tere te piki o te iahiko (tērā pea ka eke ki ngā tekau, ki ngā rau rānei o te iahiko kua whakatauria), ā, ka taea e te kaha hiko me te wera nui te tahu tonu i ngā waea me ngā taputapu, ā, ka puta he ahi, he aituā rānei mō te ru hiko. Ka tutuki te tiaki ara iahiko poto o te MCB mā te taputapu whakaweto hikohiko: ina haere te iahiko poto i roto i te koiri o te taputapu whakaweto hikohiko, ka puta he kaha hikohiko kaha, ka kukume i te anga ki te patu i te tikanga whakaweto, ka tere te whakatuwheratanga o ngā hononga ka tapahia te ara iahiko.

He tino poto te wā mahi a te parenga ara-poto, i roto i te 0.1 hēkona te nuinga. Ka taea e ia te wehe wawe i te pūwāhi hapa i mua i te whānui o te hapa, ka whakaitihia te kino o ngā hapa ara-poto ki te raina me ngā taputapu, me te tiaki i te haumaru o te tangata me te taonga.

II. Ngā Āhuatanga Hangarau: Tika, pumau, pono hoki

1. Te tino tika o te nekehanga

Kua tino hangaia, kua whakatikatikaina hoki ngā uara mahi tiaki o te MCB kia tika ai te mahi i roto i te awhe iahiko kua tohua. Ko te uara tautuhinga iahiko o tana tiaki taumaha (pēnei i te kore e mahi i te 1.05 ngā wā o te iahiko whakatauranga me te mahi i roto i te wā kua whakaaetia i te 1.3 ngā wā o te iahiko whakatauranga) me te iahiko whakahaere iti rawa o te tiaki ara iahiko poto (te nuinga o te wā 5 ki te 10 ngā wā o te iahiko whakatauranga) e tutuki ana i ngā paerewa o te ao (pēnei i te IEC 60898) me ngā paerewa ā-motu (pēnei i te GB 10963). I te wā o te tukanga whakaputa, me whakatikatika tino tika ia MCB kia tika ai te whakahaere i te hapa wā mahi i raro i ngā āhuatanga iahiko rerekē i roto i te awhe e whakaaetia ana, kia kore ai e "kore e mahi" (e kore e takahi i te wā o ngā hapa) "mahi teka" rānei (e takahi i te wā o te mahi noa).

2. He roa te ora o te miihini me te hiko

Me tūpato te MCB i ngā mahi kati me te whakatuwheratanga, tae atu ki ngā pānga o te au pakaru, nō reira he tino whakaritenga mō te roa o te ora o te mīhini me te hiko. Ko te roa o te ora o te mīhini e pā ana ki te maha o ngā wā e mahi ana te kaiwawao hiko i te āhua kore-au. Ka taea e te roa o te ora o te MCB kounga teitei te neke atu i te 10,000 ngā wā. Ko te roa o te ora hiko e pā ana ki te maha o ngā wā e mahi ana i raro i te kawenga i te au kua whakatauria, ko te tikanga kāore e iti iho i te 2,000 ngā wā. Ko ōna wāhanga matua o roto (pērā i ngā hononga, ngā tikanga takahi, me ngā puna) he mea hanga ki ngā rauemi kaha-teitei (pērā i ngā hononga koranu hiriwa me ngā wāhanga kawe hiko parahi whākawa), ā, mā roto i ngā tikanga tukatuka me te maimoatanga wera tika, ka whakarei ake i tō rātou ātete kakahu, te ātete waikura, me te ātete ngenge kia mau ai te mahi ahakoa te whakamahinga roa.

3. Ka whakarerekētia te kaha pakaru ki ngā whakaritenga o te tirohanga

Ko te kaha pakaru e pā ana ki te uara iahiko poto mōrahi ka taea e te MCB te pakaru haumaru i raro i ngā tikanga kua tohua, ā, koinei te tohu matua mō te ine i tōna kaha tiaki iahiko poto. I runga i ngā āhuatanga tono, ka taea te whakarōpū i te kaha pakaru o te MCB ki ngā taumata maha, pēnei i:

I roto i ngā āhuatanga ā-iwi, ko ngā MCBS me ngā āheinga pakaru o te 6kA, 10kA rānei e whakamahia whānuitia ana, e taea ai te whakahaere i ngā hapa ara iahiko poto i roto i ngā whare, i ngā whare arumoni iti rānei.

I ngā āhuatanga ahumahi, me urutau ngā MCBS me ngā āheinga pakaru teitei ake (pēnei i te 15kA me te 25kA) ki ngā taiao he nui ngā taputapu kikī me ngā iahiko poto nui.

Ko te whakatutukitanga o te kaha pakaru e whakawhirinaki ana ki tētahi pūnaha tinei arai kua arotauhia (pērā i te rūma tinei arai whatunga). I te wā e pakaru ana te ara iahiko poto, ka tere te whakauru i te arai ki roto i te rūma tinei arai, ā, ka wehea te arai kia maha ngā arai poto mā roto i ngā whatunga whakarewa, ka whakaiti i te ngaohiko arai, ka tere hoki te tinei i te arai hei ārai i te kino ki te hanganga o roto o te kaiwawao ara iahiko nā te pāmahana arai teitei.

Iii. Ngā Āhuatanga Hanganga me te Whakahaere: Te Whakaiti me te Whakangawari

He iti te rahi, he ngāwari hoki te tāuta

He hoahoa ā-pūrua te MCB, he iti te rahi (ko te nuinga he 18mm, he 36mm rānei te whānui), ā, ka taea te tāuta tika ki runga i ngā rēra o ngā pouaka tohatoha paerewa, o ngā kāpata tohatoha rānei, kia penapena ai te wāhi tāutanga. Mā tōna hanganga kiato ka taea te tiaki motuhake i ngā ara iahiko maha i roto i te wāhi tohatoha hiko iti. Hei tauira, i roto i te pouaka tohatoha whare, ka taea te whakamahi i ngā MCBS maha hei whakahaere i ngā ara iahiko rerekē pērā i te rama, ngā putanga hiko, me ngā hauhautanga, kia tutuki ai te tiakitanga me te whakahaere motuhake, he mea watea mō te kimi hapa me te whakahaere i te whakapaunga hiko.

2. He ngāwari ki te whakahaere, he māmā hoki ki te tiaki

He mea hanga te tikanga whakahaere o te MCB kia rite ki te tangata. Mā te kakau ka tutuki ai ngā mahi kati ("tūnga ON") me te whakatuwhera ("tūnga OFF"). Ka kitea mārama te āhua o te kakau, ka taea ai te aromatawai i te āhua whakaweto-whakaweto o te ara iahiko. Whai muri i te hapa TRIP, ka noho aunoa te kakau ki waenganui ("tūnga TRIP"), ka āwhina i ngā kaiwhakamahi ki te tautuhi wawe i te ara iahiko hapa. Ina tautuhi anō, nekehia noa te kakau ki te tūranga "OFF" kātahi ka pana ki te tūranga "ON". Kāore he taputapu ngaio e hiahiatia ana, ā, he māmā noa te whakahaere. I roto i te tiaki o ia rā, kāore te MCB e hiahia ki te patuiro uaua, ki te tirotiro rānei. Me tirotiro noa i ia wā kia mau tonu ai te āhua, kia maeneene hoki te mahi, ā, he iti ngā utu tiaki.

3. He mahi whakamātao tino pai

Hei whakarite i te haumaru hiko, ko te anga me ngā wāhanga ārai o roto o te MCB he mea hanga ki ngā rauemi ārai ngaohiko teitei me te pāmahana teitei (pēnei i ngā kirihou whakatakoto wera me te ABS ātete mura), me te ātete ārai o te ≥100MΩ, ka taea te tu atu i te whakamātautau ātete ngaohiko AC 2500V (kāore he pakaru, he mura rānei i roto i te 1 meneti). Ka taea tonu e ia te pupuri i te mahi ārai pai i roto i ngā taiao uaua pēnei i te makuku me te puehu, te ārai i te turuturu, i ngā ara iahiko poto ā-wāhanga-ki-wāhanga rānei, me te whakarite i te haumaru o ngā kaiwhakahaere me ngā taputapu.

IV. Ngā Mahi Whakawhanui me te Āheitanga ki te Urutau: Te Whakatutuki i ngā Hiahia Kanorau

1. Whakawhanuitia ngā momo i ahu mai

Haunga te tiakitanga taketake mō te taumaha me te tiakitanga poto-ara, ka taea hoki e te MCB te whakatutuki i ngā hiahia o ngā āhuatanga rerekē mā te whakawhānui mahi. Ko ngā momo pānga noa ko:

- MCB me te ārai turuturu (RCBO): Ka whakauruhia he waeine kite turuturu i runga i te kaupapa o te MCB noa. Ina puta he turuturu i roto i te ara iahiko (neke atu i te 30mA te iahiko toenga), ka taea te tere te motu hei ārai i ngā aituā ru hiko, ā, he whānuitia te whakamahinga i roto i ngā ara iahiko putanga hiko o te whare.

- MCB me te parenga ngaohiko nui/ngaohiko iti: Ka mate aunoa ina teitei rawa, ina iti rawa rānei te ngaohiko o te whatunga hei tiaki i ngā taputapu tairongo pēnei i ngā pouaka whakamātao me ngā hauhautanga mai i ngā kino i puta mai i ngā piki me ngā heke o te ngaohiko.

- MCB au whakarōpū ka taea te whakarerekē: Whakatikatikahia te uara au whakarōpū mā te porotiti, e tika ana mō ngā āhuatanga e hiahiatia ana kia whakarerekētia ngāwari te au kawenga.

2. Kaha te urutau ki te taiao

Ka taea e te MCB te mahi pumau i raro i te whānuitanga o ngā āhuatanga taiao, e whakamahia ana i roto i te awhe pāmahana mai i te -5℃ ki te 40℃ (ka taea te whakawhānui i ngā tauira motuhake ki te -25℃ ki te 70℃), me te haumākū whanaunga o te ≤95% (kāore he hauhautanga), ā, ka taea te urutau ki ngā āhuatanga o te rangi o ngā rohe rerekē. I taua wā, he kaha tōna hanganga o roto ki te ātete i te wiri me te ru, ā, ka taea te mahi pono i roto i ngā wāhi ahumahi, i ngā waka kawe rānei (pēnei i ngā kaipuke me ngā waka whakangahau) me te wiri iti.

Ngā rerekētanga mai i ētahi atu pūwhakawhiti hiko:

MCB (Pakaru Arahiko Iti): E whakamahia ana mō te tiaki ara iahiko me te iahiko iti (he iti iho i te 100 ampere te nuinga o te wā).

MCCB (Molded Case Circuit Breaker): E whakamahia ana mō te tiaki ara iahiko me ngā iahiko teitei ake (neke atu i te 100 ampere te nuinga o te wā) ā, he pai mō ngā taputapu nui me ngā pūnaha tohatoha hiko.

RCBO (Kaipaka Ara Iahiko Tūturu): Ka whakakotahi i ngā mahi tiaki iahiko nui me te tiaki turuturu, ā, ka taea te tiaki i te ara iahiko mai i te taumaha rawa, te ara iahiko poto me te turuturu i te wā kotahi.