BS7671 Kusintha 2-704 RCD Chitetezo: kapangidwe ndi

Kugwiritsa ntchito zida zamagetsi zosasamalidwa bwino kapena zachikale m'malo owopsa kumapangitsa antchito ndi alendo kukhala pachiwopsezo cha kugwedezeka kwamagetsi, makamaka ngati alumikizana mwachindunji ndi nthaka.
Dalirani ma RCDs kuti muwonjezere chitetezo ku zolakwika.Ma switchboards ambiri omwe alipo omwe adayikidwa pamalo omanga ku UK ali ndi ma AC RCD.
Ma AC RCDs ndi osayenera kugwiritsidwa ntchito ndi zida zamakono zamagetsi ndi zida zomwe zimagwiritsidwa ntchito pomanga, kupatula kukana kutentha ndi kuyatsa - onani BS7671 Amendment 2.
Zofunikira zonse za njirayi zimaperekedwa mu gawo lalikulu la njira yozimitsa magetsi.Kusintha 2 kumapeto kwa § 531.3.3 imati: "Mtundu wa AC RCD uyenera kugwiritsidwa ntchito pazikhazikiko zokhazikika zomwe zili ndi mafunde odziwika omwe alibe gawo la DC."
Kuyenerera kwa kuyang'anira ndi kuyang'anira zipangizo zomwe zimagwirizanitsidwa ndi magetsi a m'munda, makamaka zipangizo zamapulagi, ndi nkhani yaikulu ya thanzi ndi chitetezo.Zowopsa zomwe zimagwirizanitsidwa ndi kulumikiza zida za magawo atatu ku gwero lamagetsi lomwe lilipo lotetezedwa ndi mtundu wolakwika wa RCD ndizowopsa zomwe zingakhalepo pamasamba onse ku UK.Izi zimazindikiridwa ndikuloledwa mu HD 60364-7-704 2018 Zowonjezera ZB: Pamalo omanga ndi kugwetsa ku Germany / Magawo onse atatu a magawo atatu mpaka 63 A ayenera kutetezedwa ndi mtundu wa B RCDS.
Kukhazikitsa kwakanthawi: Chida chilichonse chomwe chatsekedwa ndikusamutsidwa kumalo atsopano kapena kutumizidwa kuti chiwongoleredwe/kukonzedwa chidzagwirizana ndi zofunikira zachitetezo chaposachedwa, mwachitsanzo, chomwe chimayikidwa ngati chatsopano ndipo chikugwirizana ndi malamulo omwe alipo.
Kulumikiza zida zatsopano: Malangizo a zaumoyo ndi chitetezo (onani m'munsimu) akugogomezera kufunikira kwa ogwira ntchito oyenerera kuti atsimikizire kuti magetsi ndi zida zotetezera ndizoyenera zida zolumikizidwa, mwachitsanzo, mtundu wa RCD uyenera kukhala woyenera zida zolumikizidwa / chida.- onani BS 7671 531.3.3
* Tanthauzo lazamalamulo: “Adzachita” amatanthauza kuti munthu ali ndi udindo kapena udindo wochitapo kanthu.
Malangizo operekedwa mu HSE Guidance Document ndi BS7671 amathandizira kutsata zofunikira za UK Health and Safety Act.
Ma RCD osankhidwa bwino amapereka chitetezo cholakwa ndi chitetezo chowonjezera - onani Zofunikira Zowunika Zowopsa: Buku la HSE Kugwira Ntchito pa Zida Zamagetsi. Malangizo ( Indent 4 & 5) akunena kuti asanalumikizane ndi zipangizo, "munthu waluso" ayenera kuyang'ana zomwe zilipo. Malangizo ( Indent 4 & 5) akunena kuti asanalumikizane ndi zipangizo, "munthu waluso" ayenera kuyang'ana zomwe zilipo.Bukuli (ndime 4 ndi 5) limanena kuti “munthu waluso” ayenera kuyang’ana mphamvu ya magetsi asanalumikizane ndi zipangizo.Maupangiri (olembedwa 4 ndi 5) amanena kuti "munthu woyenerera" ayenera kuyang'ana mphamvu asanalumikize chipangizocho.Izi zikuphatikiza kuyenerera ndi magwiridwe antchito a zida zonse zoteteza RCD zomwe zimayikidwa molingana ndi zida.
Atatu gawo katundu kuphatikizapo inverters (mwachitsanzo mapampu, kompresa, zisindikizo, welders, etc.) kupanga pafupipafupi ndi yosalala DC kutayikira mafunde kusokoneza RCDs muyezo.Lamulo la 531.3.3 (iv) limafuna kugwiritsa ntchito mtundu wa B RCDs kuti apereke mlingo wofunikira wa chitetezo cha mitundu iyi ya katundu.
“Muyenera kusamala ndi ngozi ya imfa kapena kuvulala ndi magetsi.Zida zamagetsi ziyenera kukhala zotetezeka komanso zosamalidwa bwino. ”HSE ikugogomezera kufunikira kwa Magetsi mu Malamulo a Malo Ogwirira Ntchito 1989 ndikuthandizira malangizo ochepetsera / kuthetsa zoopsa zomwe zimagwirizanitsidwa ndi zida zopangidwira molakwika, zogwiritsidwa ntchito molakwika komanso zosamalidwa bwino.Magetsi mu Malo Ogwirira Ntchito a 1989 Rules, Rule 4-(1) "Makina onse azikhala omangidwa nthawi zonse kuti apewe ngozi momwe zingathere."Buku loyenerera la HSE Manual (HSR25) limafotokoza zofunikira paza: kupanga (ndime 62), mikhalidwe yodziwiratu ndi kagwiritsidwe ntchito (ndime 63), mawonekedwe a wopanga, zida zoyenera zodzitetezera kumagetsi… (ndime 64)), ndi “chitetezo pazida” .dongosolo zimadalira kusankha kolondola kwa zida zonse zamagetsi.Dongosolo”.. (p. 65)
Ndiko kuti, RCD imapereka chitetezo, choncho, posankha mtundu wa RCD, m'pofunika kuganizira zofunikira ndi malangizo omwe aperekedwa mu BS 7671 531.3.3, malingana ndi zipangizo zosiyanasiyana zomwe zingagwirizane pambuyo pa RCD yotetezedwa. potulukira.
Ma RCD ndi ma RCD ndi oyenera kutetezedwa komaliza / zitsulo: mavoti awo osasunthika ndi oyenera kuteteza 30 mA ku kusintha kosaloledwa ndi anthu osaphunzira (magetsi) - onani BS 7671 531.3.4.1 CBR ndi MRCD ali ndi mavoti osinthika, amatha kugwiritsidwa ntchito / katswiri monga mwalangizidwa - onani ndime 531.3.4.2 ya BS7671.
ZINDIKIRANI.Ma MRCD amagwiritsidwa ntchito ndi zida zodziyimira pawokha zolephera ndipo chifukwa chake ziyenera kutsimikiziridwa pambuyo pa msonkhano wa OEM ndi kulumikizana (BSEN60947-2 Annex M).Izi zachitika kuyesa nthawi yonse yolumikizika ya msonkhano wonse wa MRCD + MCB + S/Trip kapena U/Release monga gawo la mayeso omaliza a msonkhano:
Chifukwa cha zovuta za malo omangamanga komanso kuopsa kwakukulu kogwiritsa ntchito zipangizo zamagetsi panja, malamulo ndi osavuta: zipangizo ziyenera kukhala zoyenera kugwiritsidwa ntchito, kusungidwa bwino ndi kutetezedwa kuti zigwiritsidwe ntchito.Izi zikuphatikizapo kusankha mtundu woyenera wa RCD, kuteteza bwino zipangizo monga ma RCD ku chilengedwe, ndikuzisunga bwino.Yang'anani nthawi ndi nthawi kuti muwonetsetse kuti RCD imapereka mulingo wofunikira wachitetezo ndipo ndiyoyenera zida zolumikizidwa.Musanayambe kulumikiza zipangizo zatsopano ku switchboard yomwe ilipo - malamulo a HSE amafuna "munthu woyenerera" kuti ayese magetsi kuti atsimikizire kuti ndi otetezeka kugwiritsa ntchito ndi zipangizo.