RCBO (chotsekera magetsi chotsalira chokhala ndi chitetezo cha overcurrent) chimaphatikiza kuzindikira kwa magetsi otsalira ndi chitetezo cha overload ndi short circuit mu module imodzi ya 18 mm, mogwirizana ndi IEC 61009-1. Chizindikiro chofunikira kwambiri ndi mtundu wa RCD. Mtundu wa AC suloledwanso kukhazikitsa zatsopano ku Australia ndipo ndi woletsedwa ku UK, zomwe zimapangitsa kuti Type A RCBOs ikhale chisankho chomwe chimakonda kwambiri pa ntchito zambiri zamakono.
Zimene RCBO Imateteza
RCBO imodzi imalowa m'malo mwa zipangizo ziwiri mu malo amodzi a 18 mm. Imawunikira kusalingana pakati pa mzere ndi neutral, komanso imadutsa pa overload ndi short circuit. Malangizo a IET amafotokoza RCD ngati ikugwiritsa ntchito ma coil ozungulira ferrite toroid core, ndi ma conductor onse amoyo a circuit yotetezedwa omwe amapanga kupitirira dongosolo la residual-current sensing.
Kapangidwe kameneka ndi chifukwa chake chipangizochi chimayankha ku mphamvu yotuluka m'malo moyika mphamvu. Pamene mphamvu yotulukayo sikugwirizananso ndi mphamvu yobwerera, kusiyana kumeneku kumabweretsa mphamvu yamagetsi mu trip coil ndipo zolumikizira zimatseguka.
Mbali ya overcurrent imagwira ntchito mosiyana. Mzere wa bimetal umathandizira kudzaza pang'onopang'ono, ndipo chinthu cha maginito chimathandizira ma short circuits, komwe chizindikiro cha B kapena C curve chimabwera.
M'lifupi ndi theka lina la mkangano. Chigawo cha 1P+N chili ndi gawo limodzi la 18 mm, malo omwewo omwe MCB ingatenge, kotero bolodi lonse limatha kusuntha kupita ku chitetezo cha kutayikira kwa mpweya pa dera lililonse popanda malo otsekeredwa akuluakulu.
Ntchito ziwiri mu gawo limodzi ndi nkhani yamalonda mwachidule. Ngati mukufuna kupeza masamu a masamu pa njira iliyonse, kuyerekeza kwa RCBO ndi RCCB ndi MCB kumawonetsa kuchuluka kwa ma module.
Mtundu A kapena Mtundu AC: Chizindikiro Chomwe Chimasankha Kutsatira Malamulo
Lamulo 531.3.3 la BS 7671 limaletsa kugwiritsa ntchito zipangizo za Type AC pazida zokhazikika pomwe mphamvu yamagetsi imadziwika kuti ilibe gawo la DC. Mtundu wapano wa muyezo, BS 7671:2018+A4:2026, wakhala ukugwira ntchito kuyambira pa 15 Epulo 2026 ndipo unasindikizidwa pamodzi ndi IET ndi BSI.
Chifukwa Chake Mtundu wa AC RCBO Sensing Umalephera pa Zinthu Zamakono
Werengani mosamala choletsa chimenecho. Dera la soketi lingapereke chilichonse chomwe wogwiritsa ntchito asankha kulumikiza, kotero palibe amene anganene motsimikiza kuti akudziwa zomwe zili mu DC mu load current yake. Mwachizolowezi, lamuloli limayendetsa pafupifupi dera lililonse lomaliza kupita ku Type A.
Chifukwa chaukadaulo ndi kufooka kwa chidziwitso. Sensa ya Type AC imayankha kokha ku sinusoidal AC residual current. Onjezani gawo la DC kuchokera ku magetsi a switch-mode kapena driver wa LED, ndipo pakati pake pakhoza kudzaza pang'ono, kotero chipangizocho chingachedwe kugwedezeka kapena kulephera kugwa konse.
Komabe, onani mawuwo. Ichi ndi chiletso pakugwiritsa ntchito, osati chiletso cha malonda. Ma AC amtundu wa AC akadali ovomerezeka kugulitsa ku UK, ndichifukwa chake ogula amalandirabe m'mitundu yosiyanasiyana.
Australia sinangowaletsa. Motsatira gawo 2.6.2.2.2 la AS/NZS 3000:2018 (malamulo olumikizira mawaya), ma RCD amtundu wa AC sayenera kuyikidwa kulikonse ku Australia kuyambira pa 1 Meyi 2023, ndipo zida za Mtundu A, Mtundu B ndi Mtundu F zokha ndi zomwe ziyenera kuyikidwa.
Kuletsedwa kwa Mtundu wa AC ku Australia ndi Masiku Ake Awiri
Gawo la Building and Energy ku Western Australia limapereka chifukwa chake momveka bwino: Zamagetsi, kupanga mphamvu ya dzuwa ndi zinthu zina zofanana tsopano zikubweretsa gawo lofunika la DC m'mabwalo omwe masensa a Type AC sanapangidwe kuti azindikire.
Nthawi yosinthira ndi yofunika kumvetsetsa, chifukwa imafotokoza masiku awiri omwe nthawi zambiri amatchulidwa. Kusintha 2 kwa AS/NZS 3000 kunasindikizidwa pa 30 Epulo 2021 ndi nthawi ya miyezi 24 pomwe mtundu uliwonse ungathe kukhazikitsidwa. Nthawi imeneyo inatsekedwa pa 30 Epulo 2023.
Ndi Makonzedwe ati omwe Mtundu wa A Rule umaphimba
New Zealand ikutsatira malamulo omwewo a waya, popeza AS/NZS 3000 ndi muyezo wogwirizana. Chida cha Mtundu A chikutsatira zonse ziwiri chiletso cha ku Australia komanso chiletso chocheperako cha ku UK, ndichifukwa chake ogulitsa kunja amasunga mtundu umodzi m'malo mwa ziwiri.
Chimachitika ndi chiyani RCBO Yolakwika ikayikidwa
Kukakamiza sikuli kongopeka. Mu malangizo a 2023, Ofesi ya Chitetezo cha Magetsi ku Queensland idatsimikiza kuti igwiritsa ntchito malamulo a AS/NZS 3000 Amendment 2 popanda kuchotsera mapulojekiti omwe akuchitika kale, ndipo idachenjeza kuti kuyika switch yolakwika yachitetezo kumatanthauza kuti kontrakitala walephera kukwaniritsa ntchito zake motsatira Electrical Safety Act 2002.
Kwa wogulitsa kunja, chiopsezo chili pamwamba pa malo ogwirira ntchito. Wogulitsa amene amatenga katundu wa Type AC kumsika womwe wasamukira ku Type A amasiyidwa ndi zinthu zomwe sizingakhazikitsidwe mwalamulo, ndipo mtengo wake umakhala pa unyolo wopereka zinthu osati pa wamagetsi.
Ntchito yosintha imakhala ndi ntchito yofunikira kudziwa. Kusinthana ndi socket outlet, luminaire kapena heater pamalo okhazikika sikutanthauza kuti RCD yomwe ilipo isinthidwe, bola ngati ntchito yolondola yatsimikiziridwa.
Oyang'anira aku Australia adawonjezera gawo lachisanu ndi chimodzi mu 2023. Ma RCD okha omwe ali ndi Chizindikiro Chotsatira Malamulo kapena nambala yovomerezeka ndi omwe angagwiritsidwe ntchito m'mafakitale aku Australia.
Zizindikiro Zisanu ndi Chimodzi za RCBO Zomwe Zimasankha Kuyenerera kwa Msika
Konzani mndandandawu motsatira ndondomeko, chifukwa mzere uliwonse umachepetsera munda. Mtundu umabwera poyamba, chifukwa ndi umodzi wokha mwa isanu ndi umodzi womwe ungapangitse kuti chipangizo cholondola chikhale chosaloledwa pamsika wopitako. Asanu otsalawo ndi oyenerera uinjiniya osati kutsatira malamulo.
Kulemba
Zomwe muyenera kuyang'ana
Common specifications
Mtundu wa RCD
Lembani A, B kapena F pa ntchito yatsopano
Type A
Mphamvu yotsalira
Mulingo wowonjezera wa chitetezo
30 mA
Mzere wokhotakhota
Khalidwe lolowera mu load
B kapena C
Kuphwanya mphamvu
Icn motsutsana ndi vuto lomwe likubwera
6 kA kapena 10 kA
Mitengo
M'lifupi mwa gawo ndi kusinthana kosalowerera
1P+N pa 18 mm
Chizindikiro chovomerezeka
Kuvomerezeka kwa msika komwe mukupita
RCM kapena nambala yovomerezeka
B Curve kapena C Curve: Kufananiza Trip Band ndi Load
Kusankha ma curve kumasokoneza maoda ambiri kuposa momwe kusankha kwa mitundu kumachitira. Pansi pa IEC 60898-1, B curve imatsegulidwa mu band ya maginito pa nthawi yamagetsi yoyesedwa katatu mpaka kasanu ndipo imagwirizana ndi katundu wotsutsa komanso wowunikira, pomwe C curve imadutsa pakati pa nthawi yamagetsi yoyesedwa kasanu ndi kamodzi pa transformer ndi injini.
Fotokozaninso momwe pole imakhazikitsidwira momveka bwino. Kutalika kwa module yokha sikukuuzani ngati neutral yasinthidwa kapena imamveka yokha, ndipo ma configurations awiriwa amachita mosiyana pa TT kapena PME supply.
Konzani curve yolakwika ndipo dera likhoza kusokonekera mukayamba kuyimitsa kapena kulephera kuchotsa cholakwika mwachangu mokwanira. Mfundo yonse yosankha yafotokozedwa mu bukhu lathu la momwe ma curve a B, C ndi D amagwirira ntchito pansi pa inrush.
FAQ
Kodi RCBO imayimira chiyani?
RCBO imayimira residual current breaker yokhala ndi chitetezo cha overcurrent. Chipangizochi chimapangidwa motsatira IEC 61009-1 ndipo chimaphatikiza zomwe RCCB ndi MCB zimachita padera. Chimazindikira kutuluka kwa nthaka, kuchuluka kwa magetsi ndi short circuit, ndipo chimakwanira gawo limodzi la 18 mm DIN rail mu mtundu wamba wa 1P+N.
Kodi ndingasinthe MCB ndi RCBO?
Kawirikawiri imakwanira pamakina, koma si yofanana ndi yofanana. Chosinthacho chiyenera kugwirizana ndi chipangizo cha ogula chomwe chimayikidwamo, ndipo mitundu yosakaniza imatha kupangitsa kuti chipangizocho chisamangidwe monga momwe wopanga adachikonzera. Chigawocho chikufunika kuyesedwa chisanasinthidwe komanso chitatha, kotero ku UK nthawi zambiri izi ndi ntchito yodziwitsidwa.
Kodi ndikufunika RCBO pa dera lililonse?
Sikuti nthawi zonse, ngakhale kuti izi zimachitika mwanjira imeneyi. RCBO imachepetsa vuto pa dera limodzi, pomwe RCCB yogawana imatsitsa dera lililonse pa basi yake. Pamene bolodi limayenda m'njira zoposa khumi ndi ziwiri, ma MCB ogawana a RCCB nthawi zambiri amakhala otsika mtengo pazigawo, kotero kusankha kumakhala kokwera mtengo poyerekeza ndi kupitiliza.
Kodi kusiyana pakati pa RCBO ndi RCD ndi kotani?
RCD ndi dzina la banja la chipangizo chilichonse chomwe chimazindikira mphamvu yotsalira, ndipo chimaphatikizapo ma RCCB ndi ma RCBO. RCBO ndi membala wa banja lomwe lili ndi chitetezo champhamvu cha mphamvu yopitirira muyeso. RCCB ilibe mphamvu yochulukirapo kapena yocheperako, kotero iyenera kugwira ntchito limodzi ndi ma MCB kuti iteteze chingwecho.
Kodi ma RCBO okhala ndi pole imodzi ndi otetezeka?
Ali ndi ziphaso, koma amachita mosiyana ndi mayunitsi a double-pole. Chipangizo cha pole imodzi chokhala ndi neutral sensing chimazindikira vuto la neutral-to-earth koma chimasokoneza line conductor yokha. Pa TT kapena PME system opanga ambiri amakonda double-pole kotero ma conductor onse awiri amasweka. Yang'anani chizindikiro cha pole, osati kukula kwa module yokha.
Kodi RCBO iyenera kukhala ndi mphamvu yotani yophwanya?
Yerekezerani Icn ndi mphamvu yolakwika yomwe ikupezeka pa bolodi. Pakugawa kwa nyumba, 6 kA ndi yofala, pomwe 10 kA imapereka malo ogwirira ntchito pafupi ndi transformer yayikulu kapena komwe kulibe magetsi okwanira. Kuwunikaku kumatsimikiziridwa motsatira IEC 61009-1 pamalo ofunikira, kotero gulu lotentha limasintha machitidwe enieni.
pansi Line
Chisankho cha RCBO tsopano chili ndi zigawo ziwiri. Gawo lamagetsi ndi lodziwika bwino: mphamvu yamagetsi yoyesedwa, kupindika, mphamvu yosweka ndi kuchuluka kwa pole. Gawo lolamulira ndi latsopano komanso losalekerera, chifukwa gawo lomwe linali chinthu chokhazikika zaka zisanu zapitazo silingathe kukhazikitsidwa ku Australia konse, ndipo silingagwiritsidwe ntchito pa socket circuit ku UK. Yang'anani chizindikiro cha mtundu musanayang'ane mtengo. TOMZN imafalitsa mtundu wa RCD, kupindika ndi Icn motsatira IEC 61009-1 pa gawo lililonse lomwe lili pamlingo.
Chitetezo cha makina a solar PV chinafotokoza malo ndi malo, kuyambira pa cholumikizira cha module kupita ku grid meter. Zipangizo zisanu ndi chimodzi, zotsatiridwa ndi IEC, zokhala ndi manambala enieni a kukula.
Kuyerekeza kwa RCCB ndi RCBO ndi MCB pa ntchito yoyendera, malo a panelo, mtengo ndi miyezo ya IEC. Onani chipangizo chomwe dera lililonse limafunikiradi, kuphatikiza tebulo la masekondi 60.
Mitundu ya ma relay omwe afotokozedwa: yerekezerani ma relay amagetsi, olimba, a bango, ndi oteteza, kuphatikiza ma contact a SPST/SPDT, kuti musankhe yoyenera mwachangu.
