Mfundo Yogwira Ntchito ya Wophwanya Dera Watsopano Wotsalira

KumvetsetsaZotsalira Zamakono Zamakono Zoswa Dera: Buku Lotsogolera Lonse

Mu dziko la chitetezo chamagetsi, ma residual current circuit breakers (RCCBs) amachita gawo lofunika kwambiri poteteza anthu ndi katundu ku zolakwika zamagetsi. Zipangizozi zimapangidwa kuti zizindikire kusalingana kwa magetsi ndikuchotsa dera kuti tipewe kugwedezeka kwa magetsi ndi moto womwe ungachitike. M'nkhaniyi, tifufuza ntchito, ubwino, ndi kufunika kwa ma RCCB m'makina amagetsi amakono.

Kodi chosinthira magetsi chotsalira ndi chiyani?

Chotsekera magetsi chotsalira (RCD), chomwe chimadziwika kuti chipangizo chotsalira chamagetsi (RCCB), ndi chipangizo chamagetsi chomwe chimagwiritsidwa ntchito kuyang'anira magetsi mu dera. Chimayerekeza nthawi zonse magetsi omwe akuyenda kudzera mu conductor wamoyo (gawo) ndi magetsi omwe akuyenda kudzera mu conductor wa neutral. Nthawi zambiri, magetsi awiriwa ayenera kukhala ofanana. Komabe, ngati vuto lachitika, monga short circuit kapena insulation failure yomwe imayambitsa leak current, RCCB imazindikira kusiyana pakati pa awiriwa—magetsi otsalira. Pamene kusalingana kumeneku kupitirira malire okonzedweratu, RCCB imagunda, kutseka magetsi ndikuletsa kuwonongeka kwa zida.

Kodi RCCB imagwira ntchito bwanji?

Ma RCCB amagwira ntchito motsatira mfundo ya electromagnetic induction. Mkati mwa chipangizocho, muli magnetic core yomwe imaphimba mawaya amoyo ndi osalowerera. Pamene mafunde ali bwino, maginito omwe amapangidwa ndi mafundewa amasiyana. Komabe, ngati pali leak current, maginito amakhala osalinganika, zomwe zimapangitsa kuti magetsi akhale mkati mwa core ndikuyambitsa njira yokhota. Kuyankha mwachangu kumeneku (nthawi zambiri mkati mwa 30 milliseconds) kumaonetsetsa kuti dera latsekedwa musanawonongeke kwambiri.

Ubwino wogwiritsa ntchito RCCB

1. Chitetezo Chowonjezereka: Phindu lalikulu la ma RCCB ndi chitetezo chawo ku kugunda kwa magetsi. Ma RCCB ndi othandiza kwambiri m'malo onyowa monga m'bafa ndi m'makhitchini, komwe chiopsezo cha kugunda kwa magetsi chimakhala chachikulu.

2. Kuteteza Moto: Ma RCCB amagwira ntchito yofunika kwambiri poteteza moto mwa kuzindikira mafunde otuluka omwe angayambitse kutentha kwambiri komanso moto womwe ungachitike. Amathandiza kuchepetsa zoopsa zokhudzana ndi mawaya ndi zolakwika za zida zamagetsi.

3. Tsatirani malamulo: Malamulo ambiri okhudza chitetezo cha magetsi ndi malamulo omanga nyumba amafuna kuti pakhale ma residual current circuit breakers (RCCBs) m'nyumba zogona ndi zamalonda. Kugwiritsa ntchito zipangizozi kumatsimikizira kuti malamulo akutsatira malamulo ndipo kumawonjezera miyezo yonse ya chitetezo.

4. Yosavuta kuyiyika ndi kusamalira: RCCB ndi yosavuta kuyiyika ndipo ili ndi ndalama zochepa zoyikonzera. Ndikoyenera kuyiyesa nthawi zonse pogwiritsa ntchito batani loyesera kuti muwonetsetse kuti ikugwira ntchito bwino.

Kusankha RCCB yoyenera

Posankha RCCB, zinthu zotsatirazi ziyenera kuganiziridwa:

- Mphamvu Yoyesedwa: Iyi ndi mphamvu yayikulu kwambiri yomwe RCCB ingathe kupirira. Kusankha mphamvu yoyesedwa kuyenera kutengera katundu wonse wa dera lomwe ikutetezedwa.

- Mlingo Wokhudzidwa: Ma RCCB ali ndi milingo yosiyanasiyana ya kukhudzidwa, nthawi zambiri 30mA yodzitetezera payekha ndi 100mA kapena 300mA yodzitetezera pamoto. Kusankha kumadalira momwe ntchitoyo imagwiritsidwira ntchito komanso kuchuluka kwa chiopsezo.

- Chiwerengero cha ndodo: Ma RCCB amapezeka mu mawonekedwe a ndodo imodzi, ndodo ziwiri ndi ndodo zinayi, kutengera mtundu wa dera lomwe likutetezedwa.

Mwachidule

Mwachidule, ma residual current circuit breakers ndi gawo lofunikira kwambiri pamagetsi amakono, zomwe zimateteza kwambiri ku kugunda kwa magetsi ndi moto. Kutha kwawo kuzindikira mwachangu ndikuyankha ku kusowa kwa magetsi kumawapangitsa kukhala zida zofunika kwambiri zotetezera m'nyumba ndi mabizinesi. Pamene miyezo yachitetezo chamagetsi ikupitirirabe kusintha, ma residual current circuit breakers adzakhala ofunikira kwambiri, zomwe zimapangitsa kuti akhale ndalama zofunika kwambiri kwa aliyense amene akufuna kuwonjezera njira zawo zotetezera magetsi.