Kunzwisisa MaRCCB Emagetsi: Gwaro Rakazara
Munyika yekuchengetedzwa kwemagetsi, maResidual current circuit breakers (RCCBs) anoita basa rakakosha mukudzivirira vanhu nepfuma kubva kunjodzi dzemagetsi. Chinyorwa chino chichaongorora zvinoreva, basa, uye mashandisirwo eRCCBs dzemagetsi, zvichipa kunzwisisa kwakazara kwechishandiso ichi chakakosha.
Chii chinonzi RCCB?
RCCB, inozivikanwawo semudziyo wemagetsi unoramba uripo (RCD), mudziyo wekuchengetedza unoshandiswa kudzivirira kuvhunduka kwemagetsi nemoto wemagetsi unokonzerwa nekutadza kwepasi. Unoshanda nekutarisa kuenzana kwemagetsi ari kuyerera kuburikidza newaya dzinopisa nedzisina kusimba dzedunhu. Kana paine kusawirirana kwemagetsi (zvinogona kuitika kana magetsi achidonhera pasi), RCCB inobvisa dunhu nekukurumidza, zvichideredza njodzi yekuvhunduka kwemagetsi nemoto.
RCCB inoshanda sei?
MaRCCB anoshanda zvichibva pa differential current. Kazhinji, current inoyerera nepamuchina unoshanda inofanira kuenzana ne current inoyerera nepamuchina unoshanda zvisina kusimba. Zvisinei, kana paine zvikanganiso, zvakaita sekubata kondakita inofambisa magetsi kana mudziyo unoputsika, mamwe current anogona kuyerera pasi. RCCB inogona kuona mutsauko uyu (unowanzoita 30 milliamperes (mA)) uye inodonha mukati memamiliseconds.
Mhinduro iyi yekukurumidza yakakosha pakudzivirira kukuvara kwakanyanya kana kufa nekuda kwekuvhunduka kwemagetsi. MaRCCB anowanikwa mumhando dzakasiyana dzezviyero zviripo parizvino, kusanganisira 30mA yekudzivirira munhu uye 100mA kana 300mA yekudzivirira moto, zvichibvumira vashandisi kusarudza mudziyo wakakodzera zvavanoda.
Mhando dzeRCCBs
Kune mhando dzakasiyana dzeRCCB dzemagetsi, imwe neimwe ine chinangwa chakasiyana:
1. 2-pole RCCB: Inoshandiswa kumacircuit echikamu chimwe chete, ine materminal maviri ekubatanidza mhenyu neasina kwayakarerekera.
2. RCCB ine matanda mana: Yakagadzirirwa macircuit ane maphase matatu, ine materminal mana ekugadzirisa maphase matatu uye kondakita isina kupindirana.
3. Rudzi rweAC RCCB: Inoona magetsi anochinjana (AC) akasara.
4. Type A RCCB: Inokwanisa kuona AC uye kupururudza ma DC residual currents, yakakodzera maseketi ane michina yemagetsi.
Kushandiswa kweRCCB
MaRCCB anoshandiswa zvakanyanya munzvimbo dzekugara, dzemabhizinesi, uye dzemaindasitiri. Mudzimba, anowanzoiswa mupaneru huru yekuparadzira zvinhu kuti adzivirire macircuit anopa simba kumidziyo yemagetsi, mwenje, uye nzvimbo dzekubuditsa magetsi. Muzvivakwa zvemabhizinesi, maRCCB anodzivirira michina uye anochengetedza vashandi nevatengi vakachengeteka. Munzvimbo dzemaindasitiri, akakosha pakudzivirira michina uye kudzivirira nguva inodhura yekushanda nekuda kwezvikanganiso zvemagetsi.
Mabhenefiti ekushandisa RCCB
Kune mabhenefiti akawanda ekuisa RCCB yemagetsi:
- Kuchengetedzwa Kwakawedzerwa: MaRCCB anoderedza zvakanyanya njodzi yekubatidzwa nemagetsi uye moto, zvichipa vashandisi rugare rwepfungwa.
- Kutevedzera Mutemo: Mitemo yakawanda yekuchengetedza magetsi uye makodhi ekuvaka anoda kuti pave neRCCB mumashandisirwo chaiwo kuitira kuve nechokwadi chekutevedzera mutemo uye kuchengetedzeka.
- Dziviriro Isingadhuri: Kunyange hazvo paine mari yekutanga inodiwa kuti utenge uye uise RCCB, kuchengetedza kwenguva refu kubva mukudzivirira tsaona nekukuvara kwepfuma kwakanyanya.
Muchidimbu
Zvichitaurwa zviri nyore, maRCCB zvinhu zvakakosha mumagetsi emazuva ano, zvichipa dziviriro yakakosha kubva kunjodzi dzemagetsi. Kunzwisisa mashandiro awo, mhando dzawo, uye mashandisirwo awo kunogona kubatsira vanhu nemabhizinesi kuita sarudzo dzakarongeka dzekuchengetedza magetsi. Nekuisa maRCCB mumagetsi, vashandisi vanogona kusimudzira kuchengetedzeka, kutevedzera mitemo, uye pakupedzisira kuchengetedza hupenyu nepfuma kubva kunjodzi dzemagetsi. Sezvo tekinoroji ichiramba ichifambira mberi, kukosha kweRCCB mukuona kuchengetedzeka kwemagetsi kuchakura chete, zvichiita kuti zvive chikamu chakakosha chemagetsi chero api zvawo.
Nguva yekutumira: Nyamavhuvhu-07-2025