Ma ke ʻano he ʻoihana nui loa ma Wenzhou, he mōʻaukala lōʻihi ko YUANKY o ka hoʻomohala ʻana a me kahi kaulahao ʻoihana piha. ʻO kā mākou huahana hoʻi he mea hoʻokūkū loa ma ka mākeke.such asMCB.

ʻO MCB (Miniature Circuit Breaker, small circuit breaker) ʻo ia kekahi o nā mea hoʻohana hoʻohana nui ʻia i ka pale pale ma nā ʻōnaehana haʻahaʻa haʻahaʻa. Me nā pōmaikaʻi e like me ka liʻiliʻi liʻiliʻi, ka hana maʻalahi a me ka pale pololei, hoʻohana nui ʻia ia i nā laina hoʻolaha o nā hale ʻoihana, ʻoihana a me nā hale kīwila, e hana ana i nā hana koʻikoʻi e like me ka overload circuit a me ka pale pōkole. ʻO kēia ka ʻike kikoʻī o kāna mau hiʻohiʻona hana mai nā ʻano like ʻole e like me nā hana kumu, nā hiʻohiʻona ʻenehana, a me nā hiʻohiʻona noi.

I. Hana Palekana: E hōʻoia i ka hana palekana o ke kaapuni

Aia ka waiwai nui o MCB i ka pale palekana o nā laina hoʻolaha a me nā lako uila. Loaʻa ʻia kāna hana pale ma o nā mīkini hana pololei, ʻo ia hoʻi me nā ʻano ʻelua o ka pale kumu:

1. Overload pale hana

Ke hana maʻamau ke kaapuni, aia ke ʻano i loko o ka pae helu. Eia nō naʻe, inā nui ka nui o nā mea uila a i ʻole ke kaapuni ʻana no ka manawa lōʻihi, ʻoi aku ka nui o ke au o ka laina ma mua o ka waiwai i helu ʻia, e wela ai nā uea. Inā lōʻihi ka hoʻouka ʻana, hiki ke kumu i ka ʻelemakule insulation, nā pōkole pōkole a me ke ahi. Loaʻa ka pale kaumaha o ka MCB ma o ka bimetallic strip thermal trip device: i ka wā i ʻoi aku ka nui o kēia manawa ma mua o ka waiwai i helu ʻia, piʻo ka bimetallic strip a hoʻololi ʻia ma muli o ka wela i hana ʻia e ke au, e hoʻoikaika i ka mīkini huakaʻi e hana, e wehe a ʻoki ʻia nā mea hoʻopili kaapuni.

He ʻano inverse-time kona pale ʻana i ka overload, ʻo ia hoʻi, ʻoi aku ka nui o ka overload o kēia manawa, ʻoi aku ka pōkole o ka manawa hana. No ka laʻana, inā he 1.3 manawa ka manawa o ka manawa i helu ʻia, hiki ke mau ka manawa hana no kekahi mau hola. Ke piʻi ka manawa i ʻeono manawa i ka manawa i helu ʻia, hiki ke hoʻopōkole ʻia ka manawa hana i loko o kekahi mau kekona. ʻAʻole wale kēia e pale aku i ka huakaʻi pono ʻole ma muli o ka hoʻonui ʻana i ka liʻiliʻi liʻiliʻi akā e ʻoki koke i ke kaʻapuni inā loaʻa ke kaumaha nui, e loaʻa ai ka palekana a hilinaʻi.

2. Ka hana pale pōkole

ʻO ke kaapuni pōkole kekahi o nā hewa pōʻino loa i nā kaapuni, ma muli o ka pōʻino o ka insulation o nā uea a i ʻole nā ​​hewa o loko o nā mea hana. I kēia manawa, piʻi koke ke au (hiki paha i nā ʻumi a i ʻole haneli mau manawa o ka manawa i helu ʻia), a ʻo ka ikaika uila nui a me ka wela i hana ʻia e hiki ke hoʻopau koke i nā uea a me nā mea hana, a hiki i ke ahi a i ʻole nā ​​pōʻino uila. Loaʻa ka pale pōkole o ka MCB ma o kahi mea huakaʻi electromagnetic: i ka wā e hele ai ka manawa pōkole i ka coil o ka mea huakaʻi electromagnetic, hoʻokumu ʻia kahi mana electromagnetic ikaika, e huki ana i ka armature e hahau i ka mīkini huakaʻi, e hoʻomaka koke nā pilina e wehe a ʻoki i ke kaapuni.

He pōkole loa ka manawa hana o ka pale kaapuni pōkole, maʻamau i loko o 0.1 kekona. Hiki iā ia ke hoʻokaʻawale koke i ke kuhi hewa ma mua o ka hoʻonui ʻia ʻana o ka hewa, e hōʻemi ana i ka pōʻino o nā hemahema pōkole i ka laina a me nā lako, a me ka pale ʻana i ka palekana pilikino a me ka waiwai.

Ii. Nā hiʻohiʻona ʻenehana: pololei, kūpaʻa a hilinaʻi

1. Kiʻekiʻe pololei i ka neʻe

Ua hoʻolālā ʻia a hoʻopaʻa ʻia nā waiwai hana palekana o MCB e hōʻoia i ka hana pololei i loko o ka pae i ʻōlelo ʻia. ʻO ke kumukūʻai hoʻonohonoho o kēia manawa o kāna pale ʻoi loa (e like me ka hana ʻole ʻana ma 1.05 mau manawa i helu ʻia a me ka hana ʻana i loko o ka manawa i ʻae ʻia ma 1.3 mau manawa i helu ʻia) a me ka liʻiliʻi o ka hana o kēia manawa o ka pale pōkole pōkole (maʻamau ʻo 5 a 10 mau manawa i helu ʻia) e like me nā kūlana honua (e like me IEC 60898) a me nā kūlana aupuni (e like me 1096 GB). I loko o ke kaʻina hana, pono kēlā me kēia MCB i ka calibration koʻikoʻi no ka hōʻoia ʻana i ka hewa o ka manawa hana ma lalo o nā kūlana ʻokoʻa o kēia manawa e hoʻomalu ʻia i loko o ka pae i ʻae ʻia, e pale aku i ka "hana ʻole" (ʻaʻole e holo i ka wā o nā hewa) a i ʻole "ka hana hewa" (tripping i ka wā hana maʻamau).

2. ʻO ke ola mechanical a me ka uila lōʻihi

Pono ʻo MCB e pale pinepine i ka pani ʻana a me ka wehe ʻana i nā hana a me nā hopena hewa i kēia manawa, no laila e loaʻa i nā koi koʻikoʻi no ke ola mechanical a me ka uila. ʻO ke ola mīkini e pili ana i ka helu o nā manawa e hana ai ka mea hoʻomaha kaapuni ma kahi kūlana ʻole o kēia manawa. Hiki i ke ola mechanical o ka MCB kiʻekiʻe ke piʻi ma luna o 10,000 mau manawa. ʻO ke ola uila e pili ana i ka helu o nā manawa e hana ai ma lalo o ka ukana i ka manawa i helu ʻia, ʻaʻole ma lalo o 2,000 mau manawa. Hana ʻia kona mau ʻāpana koʻikoʻi (e like me nā pilina, tripping mechanisms, a me nā pūnāwai) i nā mea ikaika loa (e like me nā mea hoʻopili kālā a me nā ʻāpana phosphor bronze conductive), a ma o ka hoʻomaʻamaʻa pololei ʻana a me nā ʻenehana mālama wela, ua hoʻonui ʻia ko lākou pale ʻana i ka ʻaʻahu.

3. Hoʻololi ʻia ka mana haʻihaʻi i nā koi o ke kahua

ʻO ka hiki haʻihaʻi e pili ana i ka waiwai o kēia manawa pōkole pōkole e hiki ai i kahi MCB ke haki me ka palekana ma lalo o nā kūlana i kuhikuhi ʻia, a ʻo ia ka hōʻailona kumu no ke ana ʻana i kona hiki ke pale i ka pōkole. Ma muli o nā hiʻohiʻona noi, hiki ke hoʻokaʻawale ʻia ka hiki ʻana o MCB i nā pae he nui, e like me:

Ma nā hiʻohiʻona kīwila, hoʻohana mau ʻia ka MCBS me ka hiki o ka haki ʻana o 6kA a i ʻole 10kA, hiki ke hoʻopaʻa i nā hewa pōkole i loko o nā hale a i ʻole nā ​​​​wahi pāʻoihana liʻiliʻi.

Ma nā hiʻohiʻona ʻenehana, pono ʻo MCBS me nā mana haki kiʻekiʻe (e like me 15kA a me 25kA) e hoʻololi i nā kaiapuni me nā lako paʻa a me nā au pōkole pōkole nui.

ʻO ka ʻike ʻana i ka hiki ke haʻihaʻi e hilinaʻi ʻia i kahi ʻōnaehana hoʻopau arc i hoʻopaʻa ʻia (e like me ke keʻena hoʻopau arc grid). I ka wā pōkole pōkole, hoʻokomo koke ʻia ke arc i loko o ke keʻena hoʻopau arc, a ua māhele ʻia ke arc i nā ʻāpana pōkole he nui ma o nā pahu metala, e hōʻemi ana i ka volta arc a hoʻopau koke i ke arc e pale i ka pōʻino i ka hale o loko o ka mea hoʻokele kaapuni ma muli o ke kiʻekiʻe o ke anuanu.

Iii. Nā hiʻohiʻona hoʻolālā a me ka hana: Miniaturization a me ka maʻalahi

Paʻa i ka nui a maʻalahi ke hoʻouka

Hoʻohana ʻo MCB i kahi hoʻolālā modular, paʻa i ka nui (maʻamau me nā modula maʻamau e like me 18mm a i ʻole 36mm ka laulā), a hiki ke hoʻokomo pololei ʻia ma nā kaʻa o nā pahu hoʻolaha maʻamau a i ʻole nā ​​​​keʻena hoʻolaha, e mālama ana i kahi hoʻonohonoho. Hiki i kāna hana paʻa ke pale kūʻokoʻa o nā kaapuni he nui i loko o kahi wahi puʻupuʻu mana. No ka laʻana, i loko o ka pahu hoʻolaha hale, hiki ke hoʻohana ʻia nā MCBS he nui no ka hoʻomalu ʻana i nā kaapuni like ʻole e like me ke kukui, nā kumu, a me nā ea ea i kēlā me kēia, e loaʻa ai ka pale a me ka hoʻokele ʻokoʻa, kahi kūpono no ka ʻike hewa a me ka hoʻohana ʻana i ka mana.

2. Maʻalahi e hana a maʻalahi e mālama

Hoʻolālā ʻia ke ʻano hana o ka MCB i ka hana kanaka. Loaʻa ka hana pani (" ON "kūlana) a me ka wehe ʻana ("OFF" kūlana) ma o ka lima. ʻIke maopopo ʻia ke kūlana o ka lima, e ʻae ana i ka hoʻoholo intuitive o ke kūlana on-off o ke kaapuni. Ma hope o ka hewa TRIP, e kū ʻokoʻa ka lima i ke kūlana waena ("TRIP" kūlana), e hoʻomaʻamaʻa i nā mea hoʻohana e ʻike koke i ke kaapuni hewa. Ke hoʻonohonoho hou, e hoʻoneʻe wale i ka lima i ke kūlana "OFF" a laila kaomi i ke kūlana "ON". ʻAʻole pono nā mea hana ʻoihana a maʻalahi ka hana. I ka mālama ʻana i kēlā me kēia lā, ʻaʻole koi ʻo MCB i ka debugging paʻakikī a i ʻole ka nānā ʻana. Pono wale ia i nā mākaʻikaʻi maʻamau e hōʻoia i ka paʻa o ka helehelena a me ka maʻalahi o ka hana, e hopena i nā kumukūʻai mālama haʻahaʻa.

3. Hana maikaʻi i ka insulation

No ka hōʻoia ʻana i ka palekana uila, ua hana ʻia ka pahu a me nā ʻāpana insulating kūloko o ka MCB me nā mea insulating kiʻekiʻe a me ka wela wela (e like me ka plastic thermosetting a me ka flame-retardant ABS), me ke kūpaʻa insulation o ≥100MΩ, hiki ke kū i ka 2500V AC i loko o ka hoʻāʻo ʻana o ka uila uila (ʻaʻohe haʻihaʻi a i ʻole ka uila. Hiki iā ia ke hoʻomau i ka hana insulation maikaʻi i nā wahi paʻakikī e like me ka dampness a me ka lepo, pale i ka leakage a i ʻole nā ​​​​haʻina pōkole pōkole, a hōʻoia i ka palekana o nā mea hana a me nā mea hana.

Iv. Nā hana i hoʻonui ʻia a me ka hiki ke hoʻololi: e hālāwai me nā koi like ʻole

1. E hoʻokaʻawale i nā ʻano kumu

Ma waho aʻe o ka overload kumu a me ka pale pōkole pōkole, hiki i ka MCB ke hoʻokō i nā pono o nā hiʻohiʻona like ʻole ma o ka hoʻonui hana. Aia nā ʻano derivative maʻamau:

- MCB me ka pale leakage (RCBO): Hoʻohui ia i kahi module ʻike leakage ma ke kumu o kahi MCB maʻamau. Ke hiki mai ka leaka ma ke kaapuni (ke koena o kēia manawa ma mua o 30mA), hiki iā ia ke hele wikiwiki e pale i nā pōʻino uila a hoʻohana nui ʻia i nā kaapuni kumu hale.

- MCB me ka pale overvoltage/undervoltage: Holo 'akomi i ka wā i kiʻekiʻe a haʻahaʻa loa ka puʻe uila no ka pale ʻana i nā mea hana maʻalahi e like me nā pahu hau a me nā ea mai ka pōʻino i hoʻokumu ʻia e ka loli uila.

- MCB i koho ʻia i kēia manawa: Hoʻoponopono i ka waiwai i helu ʻia ma o ka pihi, kūpono no nā hiʻohiʻona kahi e pono ai ke hoʻoponopono maʻalahi o ka ukana.

2. Hiki ke hoʻololi kaiapuni ikaika

Hiki i ka MCB ke hana paʻa ma lalo o kahi ākea o nā kūlana kaiapuni, maʻamau pili i loko o kahi mahana wela o -5 ℃ a 40 ℃ (hiki ke hoʻonui ʻia nā hiʻohiʻona kūikawā i -25 ℃ a 70 ℃), me ka haʻahaʻa haʻahaʻa o ≤95% (ʻaʻohe condensation), a hiki ke hoʻololi i nā kūlana aniau o nā wahi like ʻole. I kēia manawa, hiki i kona ʻano i loko ke kū i ka haʻalulu a me ka haʻalulu, a hiki ke hana me ka hilinaʻi ma nā kahua ʻoihana a i ʻole nā ​​​​kaʻa kaʻa (e like me nā moku a me nā kaʻa leʻaleʻa) me ka haʻalulu iki.

Nā ʻokoʻa mai nā mea hoʻokaʻawale kaapuni ʻē aʻe:

MCB (Miniature Circuit Breaker): Hoʻohana nui ʻia no ka pale kaapuni me ka haʻahaʻa o kēia manawa (maʻamau ma lalo o 100 amperes).

MCCB (Molded Case Circuit Breaker): Hoʻohana ʻia ia no ka pale kaapuni me nā au kiʻekiʻe (ʻoi aku ka nui ma mua o 100 amperes) a kūpono no nā lako nui a me nā ʻōnaehana hoʻoili mana.

RCBO (Leakage Circuit Breaker): Hoʻohui ia i ka pale o ka overcurrent a me nā hana pale leakage, a hiki iā ia ke pale i ke kaapuni mai ka overload, pōkole a me ka leakage.