He alakaʻi hoʻomaʻamaʻa no nā mea ʻoki kaapuni i hoʻoheheʻe ʻia

2026-08-25 0 Waiho mai ia'u i memo

He aha ka MCCB?

He MCCB —pahu hoʻoheheʻe kaʻapuni- he mea pale haʻahaʻa haʻahaʻa e hoʻokaʻawale ʻokoʻa i kahi kaapuni ke ʻike ʻo ia i nā kūlana o ka haʻahaʻa a pōkole paha. ʻAʻole like me ka fuse, hiki ke hoʻonohonoho hou a hoʻohana hou ʻia ma hope o kahi huakaʻi. I loko o ka pahu i hoʻoheheʻe ʻia, hoʻohana ʻia kahi mīkini huakaʻi thermal-magnetic i ʻelua mau hana: pane ka mea wela i ka hoʻonui mau ʻana, aʻo ka mea magnetic e pane koke i nā hewa pōkole. ʻO ka hopena ka pale e pili ana i ke ʻano o ka hana ʻana o nā ukana uila maoli.

ʻO ka wā e koho ai i kahi MCCB: nā mea hānai komo nui, nā ʻāpana hoʻohele ʻekolu, nā kaʻa kaʻa nui, a i ʻole kekahi wahi kahi i ʻoi aku ai ke au o ka manawa pōkole ma mua o ka mea hiki i ka MCB ke hoʻopau.

Ke lawa ka MCB: nā kaapuni hope me nā haʻahaʻa haʻahaʻa a me nā pae haʻahaʻa hewa - nā papa noho, nā kukui a me nā kumu kaapuni.

250A three-pole MCCB

Pehea e koho ai i ka MCCB pono

Heluhelu ʻia i kēia manawa (Ma)

1. — hoʻohālikelike i ka haʻawe mau, a ʻae i ke poʻo no ka hoʻomaka ʻana i nā au o nā kaʻa.

Hiki ke haki (Icu / Ics)

2. — pono e oi aku mamua o ke au o ka manawa pokole ma kahi e hookomo ai. ʻO ke kiʻekiʻe o ka pae hewa, ʻoi aku ka kiʻekiʻe o ka Icu āu e pono ai.

Pololei

3. - 3P no nā ʻōnaehana ʻekolu-phase, 4P kahi e pono ai ka hoʻokaʻawale ʻana.

Nā helu uila

4. - e nānā i ka helu o ka hana uila (Ue), insulation voltage (Ui) a me ka impulse (Uimp) e kū'ē i ka pūnaewele.

Nā kūlana a me ka hōʻoia

5. - ʻO ka hoʻokō IEC / EN 60947-2 a me ka hōʻailona ʻana i ka CE ke kumu kumu no nā papahana honua.

Palapala noi

6. - ka pale kaʻa, ka hāʻawi mana a me nā hoʻonohonoho ʻoihana e koi ʻia i nā helu kiʻi like ʻole a me nā ʻano huakaʻi.

He aha ke ʻano o ka 250A MCCB i hōʻike ʻia:

No ka hana ʻana i kēia palaki, e noʻonoʻo i ka DAM3-250 mai C·DADA Electric — he 250A ʻekolu pole MCCB e hōʻike ana i ka mea e nānā ai ma kēia papa o ka mea hana:

3P hoʻonohonoho

● me ka helu 250A i kēia manawa (In), kūpono no nā papa hoʻolaha ʻekolu

Nā helu uila:

● 690V~; Ue AC400/415V, Ui 750V, Uimp 8kV

ʻO ka hiki ke wāwahi a hiki i 50kA

● — Icu o 18 / 25 / 36 / 50 kA ma nā ʻano like ʻole B / C / N / S, no laila hiki i nā mea hoʻonohonoho ke hoʻohālikelike i nā pae hewa ma nā wahi like ʻole o ka pūnaewele.

IEC/EN 60947-2 a me GB 14048.2 hoʻokō

● Ua hōʻailona ʻia ʻo CE, me ka ON/OFF akaka no ke kūlana hana ʻike ʻia

● Kūkulu ʻia no ka hāʻawi ʻana i ka mana, ka pale ʻana i ka kaʻa a me nā noi ʻoihana

ʻO ka loiloi ma hope o kēia kikoʻī: kahi 250A, 3-pole frame me ka 50kA papa haʻihaʻi hiki ke uhi i ka hapa nui o ka mea kūkulu panel a me nā mea e pono ai ka ʻaelike - mai nā papa hoʻolaha nui i nā kaʻa kaʻa kaʻa - ʻoiai ʻo nā ʻano like ʻole Icu e hāʻawi iā ʻoe i ke kumukūʻai kūpono kūpono i nā pae hewa maoli.

Manaʻo koho

● No nā kaapuni hope a hiki i ~125A me nā haʻahaʻa haʻahaʻa haʻahaʻa, ʻo MCB ke koho waiwai.

● No ka hāʻawi nui ʻana, pale kaʻa a me nā mea hoʻololi ʻoihana, koho i kahi MCCB me ka hiki ke haki i ʻoi aku ma mua o ke au o ka hoʻonohonoho ʻana.

● Inā kānalua, e hoʻonui i ka papa hoʻokahi ma luna o ka haʻihaʻi ʻana: liʻiliʻi ka ʻokoʻa o ke kumu kūʻai, ʻoiai ʻo ka palena pale ka ʻokoʻa ma waena o kahi hewa liʻiliʻi a me kahi hemahema nui.

Nīnau pinepine

Nīnau: He aha ka MCCB?

A: Apahu hoʻoheheʻe kaʻapuniHe mea pale haʻahaʻa haʻahaʻa hiki ke hoʻihoʻi hou ʻia e wehe i kahi kaapuni ma luna o ka haʻahaʻa a i ʻole ka pōkole pōkole, i hoʻolālā ʻia no nā au kiʻekiʻe a me nā pae hewa ma mua o ka mea haʻihaʻi kaapuni liʻiliʻi.

Nīnau: He aha ka manaʻo o Icu ma kahi MCCB?

A: ʻO ka Icu ka mana hoʻopōkole pōkole hope loa - ʻo ka hapa nui loa o kēia manawa hiki i ka mea haʻihaʻi ke hoʻopau. ʻO ICs ka hiki ke hoʻopau i ka lawelawe, ka pae hiki ke hoʻopau pinepine a hoʻomau i ka hana.

Nīnau: Pehea wau e koho ai i ka haki ʻana no kaʻu MCCB?

A: E koho i ka helu Icu i ʻoi aku ka kiʻekiʻe ma mua o ka manawa pōkole pōkole e hiki mai ana ma kahi hoʻonohonoho. Pono nā papa hoʻolaha me ka mana transformer kiʻekiʻe a i ʻole nā mea hānai ʻoihana lōʻihi e pono ai i nā mea papa 36-50kA.

Q: He aha ka DAM3-250 MCCB?

A: ʻO ka DAM3-250 he 250A ʻekolu pole molded case circuit breaker mai C·DADA Electric, helu ʻia a hiki i 690V me ka haki ʻana a hiki i 50kA, no ka hāʻawi ʻana i ka mana, ka pale kaʻa a me nā noi ʻoihana.