MCB (mīkini liʻiliʻi kaapuni)
Nā ʻano
• Loiloi ʻia i kēia manawa ʻaʻole i ʻoi aku ma mua o 125 A.
• ʻaʻole hiki ke hoʻonohonoho i nā ʻano huakaʻi.
• ʻOhana a mehana-magnet hana.
MCCB (mea hoʻoheheʻe hihia kaapuni)
Nā ʻano
• Loipālākiō i kēia manawa a hiki i 1600 A.
• hoʻoneʻe ʻia paha ka huakaʻi Trip
• ʻOhana a mehana-magnet hana.
Mea hoʻokaʻawale uila
Nā ʻano
• Loipālākiō i kēia manawa a hiki i 10,000 A.
• hiki ke hoʻoliʻiliʻi piha nā ʻano huakaʻi me ke komo ʻana i nā paepae huakaʻi configurable.
• maʻa mau ʻia me ka uila - kekahi mau hiʻohiʻona e mālama ʻia me microprocessor.
• Hoʻohana pinepine ʻia no ka hāʻawi mana nui i nā mea kanu ʻoihana nui, kahi i hoʻonohonoho ʻia ai nā mea haki i nā pā huki no ka maʻalahi o ka mālama.
Mea hoʻokae kaapuni holo
Nā ʻano
• Me ka helu o kēia au a hiki i 3000 A,
• Hoʻopili kēia mau mea haki i ka piʻo i loko o kahi ʻōmole hakahaka.
• Hiki ke hoʻopili ʻia kēia mau mea a hiki i 35,000 V. Hoʻohālikelike nā mea hoʻokaʻawale uila i ka lōʻihi o ke ola ma waena o ka hoʻohou hou ʻana ma mua o nā mea hōʻoki uila.
RCD (residual current device / RCCB (residualcurrent circuit breaker)
Nā ʻano
• Ka pae (laina) a me nā kaulike ʻole o nā kaula ʻelua e pili ana ma o RCD.
• huakaʻi kaapuni i ka wā he hewa hewa o ka honua.
• E hoʻi ka nui o nā kahe i kēia manawa ma o ka pae (laina) ma o ka kūlike ʻole.
• ʻIke ʻia e RCD. kekahi kuhi hewa ma waena o nā kahe ʻelua e kahe ana i loko o ka pae a me ke kuhi hewa e ʻike ʻia e -RCD a hele i ke kaapuni ma waena o 30Miliseconed.
• Inā pili ka honua i kahi ʻōnaehana honua i kahi koʻokoʻo honua a ʻaʻole ka uea nui e hiki mai ana, a laila pono ia e pale ʻia i nā kaapuni āpau e kahi RCD (no ka mea ʻaʻole hiki i ka mite ke lawa ka hewa i kēia manawa e hele i MCB)
• He ʻano maikaʻi loa ka RCD o ka pale ʻana i ka haʻalulu
Hoʻohana nui ʻia ʻo 30 mA (milliamp) a me 100 mau mīkini. ʻO kahi kahe o 30 mA (a i ʻole 0.03 amps) i kēia manawa he mea liʻiliʻi ia i mea paʻakikī loa e loaʻa kahi haʻalulu weliweli. ʻOiai ʻo 100 mA kahi kiʻi liʻiliʻi ke hoʻohālikelike ʻia i kēia manawa e kahe ana i kahi hewa honua me ka ʻole o ia pale (haneri o amps)
Hiki ke hoʻohana ʻia kahi 300/500 mA RCCB ma kahi o ke pale ahi wale nō e koi ʻia ai. e laʻa., ma nā kaapuni uila, kahi i liʻiliʻi ai ka makaʻu o ka uila uila.
Ka palena o RCCB
• Hoʻonohonoho ʻia nā RCCB electromekanical maʻamau e hana ma nā ʻano nalu maʻamau a ʻaʻole hiki ke hōʻoia ʻia e hana ma kahi o nā nalu maʻamau i hoʻokumu ʻia e nā ukana. ʻO ka mea maʻamau ka hapalua nalu i hoʻoponopono ʻia ka nalu i kapa ʻia i kekahi manawa i kapa ʻia he pulsating dc i hoʻokumu ʻia e nā hāmeʻa hoʻoholo wikiwiki, semi conductor, kamepiula a me nā dimmers hoʻi.
• Loaʻa nā RCCB i hoʻololi hou ʻia e hana ma ka ac maʻamau a me ka pulsating dc.
• ʻAʻole hāʻawi ʻo RCDs i ka pale no nā kaumaha i kēia manawa: Kuhi ka RCD i ke kaulike ʻole i nā kahe ola a me ke kūlike ʻole. ʻAʻole hiki ke ʻike ʻia kahi overload o kēia manawa, nui nō naʻe. He kumu pinepine ia o nā pilikia me nā novice e hoʻololi i kahi MCB i kahi pahu fuse me kahi RCD. Hana ʻia kēia i ka hoʻāʻo e hoʻonui i ka pale haʻalulu. Inā kū ka hewa kūleʻa-ola (ke kaapuni pōkole, a i ʻole ka overload), ʻaʻole hele ka RCD, a ʻino paha. I ka hoʻomaʻamaʻa ʻana, e huakaʻi paha ka MCB nui no ka hale, a i ʻole ka fuse o ka lawelawe, no laila ʻaʻole e alakaʻi i ka pōʻino i ke kūlana; akā hōʻoluʻolu paha ia.
• Hiki i kēia manawa ke kiʻi i kahi MCB a me RCD i kahi anakahi, i kapa ʻia he RCBO (e ʻike ma lalo). Ke pale nei i kahi MCB me kahi RCBO o ka helu like he palekana ia.
• Nuisance tripping o RCCB: hiki ke hoʻololi koke i ka hoʻouka uila hiki ke hana i kahi kahe liʻiliʻi i kēia manawa i ka honua, keu hoʻi i nā mīkini kahiko. Hoʻomaʻamaʻa loa nā RCD a hana wikiwiki loa; huakaʻi paha lākou ke pio ka moto o kahi pahu hau paʻa. Hoʻomaopopo ʻia kekahi mau lako `` leaky '', ʻo ia hoʻi, e hoʻoulu i kahi kahe mau o kēia manawa i ka honua. Hōʻike ākea ʻia kekahi mau ʻano pono kamepiula, a me nā hoʻonohonoho kīwī nui e hoʻopilikia ai i nā pilikia.
• ʻAʻole e pale ʻo RCD i ka puka o ke kaula uila me nā wahi ola a kūlike ʻole i ke ala hewa ʻole.
• ʻAʻole pale ʻo RCD i ka overheating i nā hopena ke kolo ʻole ʻia nā alakaʻi i kā lākou pahu.
ʻAʻole e pale aku ʻo RCD i nā haʻalulu kūlohelohe, no ka mea ke kaulike ke ʻano o ke ola a me ke kūlike ʻole. No laila inā ʻoe e hoʻopā i nā alakaʻi ola a kūlike ʻole i ka manawa like (e laʻa, nā ʻaoʻao ʻelua o kahi kau kukui), loaʻa paha iā ʻoe kahi haʻalulu maikaʻi ʻole.
ELCB (Earth Leakage Circuit Breaker)
Nā ʻano
• pae (laina), Pūʻali kūleʻa a me ka uea honua e pili ana ma o ELCB.
• Ke hana nei ʻo ELCB ma muli o ke kahe o ka honua.
• Ka manawa hana o ELCB:
• ʻO ka palena palekana loa o kēia wā a ke Kino Kanaka e hiki ai ke kū i ka 30ma kek.
• Kuhi paha he 500Ω ke kūʻē ʻana o ke Kino Kanaka a ʻo ka 230 Voltage i ka honua.
• 500/230 = 460mA ke kino o ke Kino.
• No laila pono e hoʻohana ʻia ʻo ELCB ma 30maSec / 460mA = 0.65msec.
RCBO (Nūhou Kaapuni Breaker me OverLoad)
Ka ʻokoʻa ma waena o ELCB a me RCCB
• ʻO ELCB ka inoa kahiko a kuhikuhi pinepine i nā hāmeʻa uila i loaʻa hou ʻole a aʻoaʻo ʻia ʻoe e pani iā lākou inā ʻike ʻoe i kekahi.
• ʻO RCCB a i ʻole RCD ka inoa hou e kuhikuhi ana i ka hana o kēia manawa (no laila ka inoa hou e hoʻokaʻawale ʻia mai ka uila i hoʻohana ʻia).
• ʻOi aku ka maikaʻi o ka RCCB hou no ka mea e ʻike ia i kekahi hewa o ka honua. ʻIke wale ke ʻano uila i nā hewa o ka honua e kahe hou i waena o ka uea honua nui no laila ʻo kēia ke kumu i kū ai lākou i ka hoʻohana.
• ʻO ke ala maʻalahi e haʻi i kahi huakaʻi uila i hana ʻia e nānā no ka uea honua nui i pili iā ia.
• E loaʻa i ka RCCB ka laina a me nā pilina kūlike ʻole.
• Ke hana nei ʻo ELCB ma muli o ke kahe o ka honua. Akā ʻaʻole loaʻa i ka RCCB ʻike a pilina paha o ka Honua, no ka mea, like ke ʻano o ka Phase ma kēia me ke kūlike ʻole o ka pae hoʻokahi. ʻO ia ke kumu e hiki ai i ka RCCB ke huakaʻi ke ʻano ʻokoʻa nā kahawai ʻelua a kū like ia i nā ʻau like ʻelua. ʻOkoʻa nā kahe kūlike ʻole a me nā pae i ke ʻano e kahe ana ka honua i loko o ka Honua.
• ʻO ka hopena ke hana nei nā mea ʻelua no ka mea like, akā ʻo ka mea pili ka ʻokoʻa.
• ʻAʻole koi ka RCD i ka pilina honua ponoʻī (nānā wale ia i ka mea ola a kūlike ʻole). Hoʻohui ʻike ʻia nā kahe i kēia manawa i ka honua a me nā lakohana me ka ʻole o kahi honua ponoʻī.
• Kēia mea e hoʻomau ka hāʻawi ʻana o kahi RCD i ka palekana o ka haʻalulu i nā lakohana i loaʻa ka honua hewa. ʻO kēia mau waiwai i kaulana ai ka RCD ma mua o kāna mau hoa paio. ʻO kahi laʻana, ua hoʻohana ākea ka haki kaika honua (ELCBs) ma kahi o ʻumi mau makahiki i hala. Ua ana kēia mau hāmeʻa i ka uila ma ke alakaʻi honua; inā ʻaʻole zero kēia uila uila ua hōʻike ʻia kēia i kahi leakage o kēia manawa i ka honua. ʻO ka pilikia e pono ai nā ELCB i kahi pilina honua kani, e like me nā lakohana e pale ai. A ʻo kahi hopena, ʻaʻohe mea e pono ai ka hoʻohana ʻana i nā ELCB.
Koho MCB
• ʻO ka hiʻohiʻona mua ka overload i manaʻo ʻia e pale i ka hoʻoili pōkole ʻana o ke kaula i kahi kūlana hewa ʻole. E loli ka wikiwiki o ka tripping MCB me ke kekelē o ka nui loa. Hoʻomaopopo maʻamau kēia i ka hoʻohana ʻana o kahi mea pumehana ma MCB.
• ʻO ka lua o ka hiʻohiʻona ka pale pale magnet, i manaʻo ʻia e hana ke hiki ka hewa i kahi pae i koho ʻia a e huakaʻi i ka MCB ma loko o hoʻokahi hapaʻumi o kekona. Hāʻawi ka pae o kēia huakaʻi magnet i ka MCB i kona ʻano ʻano penei:
|
ʻAno |
Tripping ʻĀina |
Manawa Manawa |
| ʻAno B |
3 i 5 manawa piha i kēia manawa |
0,04 To 13 Sek |
| ʻAno C |
5 i 10 mau manawa piha ukana |
0.04 To 5 Sec |
| ʻAno D |
10 i 20 mau manawa piha ukana |
0,04 To 3 Sek |
• ʻO ke kolu o ke ʻano ka pale kaapuni pōkole, i manaʻo ʻia e pale aku i nā hewa nui i loko o nā kaukani amp i hoʻokumu ʻia e nā hewa pōkole pōkole.
• ʻO ka hiki o ka MCB ke hana ma lalo o kēia mau ʻano hāʻawi i kāna helu kaapuni pokole ma Kilo amps (KA). Ma nā mea laulā no nā mea kūʻai mai he lawa ka pae hewa 6KA akā no nā papa ʻoihana 10KA hemahema hewa a i ʻole e koi ʻia.
ʻO Fuse a me MCB mau ʻano
• Helu ʻia ʻo Fuse a me MCBs i nā amps. Hāʻawi ʻia ka helu helu amp ma ka fuse a i ʻole ke kino MCB ka nui o kēia manawa e hala mau ana ia. Kāhea ʻia kēia i ke au i helu ʻia a i ʻole ka nominal current.
• Manaʻo ka poʻe he nui inā ʻoi aku ka nui o kēia manawa i ke au nominal, e hele koke ana ka hāmeʻa. No laila inā he 30 amps ka helu pālākiō, e holo i kēia manawa he 30.00001 amps, ʻeā? ʻAʻole pololei kēia.
• ka fuse a me ka MCB, ʻoiai he like ko lākou mau inoa koho, he mau waiwai ʻokoʻa loa.
• Eia kekahi laʻana, No 32Amp MCB a me 30 Amp Fuse, e hōʻoia i ke hemo ʻana i 0.1 kekona, koi ka MCB i kahi au o 128 amp, ʻoiai e koi ana ka fuse 300 amps.
• Pono ka fuse e koi hou aku i kēia manawa e puhi iā ia i kēlā manawa, akā e nānā i ka nui o kēia mau kahawai ma mua o ka '30 amps 'i kaha ʻia i ka helu ʻana i kēia manawa.
• Aia kekahi mea liʻiliʻi i ka papa o, i, i ka mahina, e huakaʻi kahi 30-amp fuse ke lawe nei i 30 amp. Inā i loaʻa i ka fuse kekahi mau overloads ma mua (ʻaʻole paha i ʻike ʻia) ʻoi aku paha kēia. Hōʻike kēia i ke kumu e hiki ai i nā fuse ke 'pupuhi' no kekahi kumu maopopo ʻole.
• Inā māka ʻia ka fuse '30 amps ', akā kū maoli ia i 40 mau amps no hoʻokahi hola, pehea e hiki ai iā mākou ke hōʻoia i ke kāhea ʻana iā ia he' 30 amp 'fuse? ʻO ka pane ʻo ia nā hiʻohiʻona overload o fuse i hoʻolālā ʻia e kūlike me nā waiwai o nā kaula o kēia au. ʻO kahi laʻana, e kū ana kahi kaula uila insulated PVC i 50% overload no hoʻokahi hola, no laila me he mea lā he pono ke fuse kekahi.
Ka manawa o ka manawa: Dec-15-2020