BS EN 61643:21-2001+A2:2013

Yakadzika-voltage kuwedzera ekuchengetedza michina

Chikamu 21: Midziyo yekudzivirira yekudzivirira yakanamirwa kunharembozha uye kusaina network

Nhanganyaya Yenyika

Iyi yeBritish Standard ndiyo yekumisikidzwa kweUK kwe
EN 61643-21: 2001 + A2: 2013 Inotorwa kubva kuIEC 61643-21: 2000, inosanganisira corrigendum Kurume 2001 uye kugadzirisa 2: 2012. Inotora BS EN 61643-21: 2001 + A1: 2009, iyo inobviswa.

Kutanga uye kupera kwemavara akaunzwa kana kuchinjwa nekugadziriswa kunoratidzwa mune zvinyorwa nemategi. Matagi anoratidza shanduko kuchinyorwa cheIEC anotakura huwandu hwekugadziriswa kweIEC. Semuenzaniso, zvinyorwa zvakashandurwa neIEC kugadzirisa 1 zvinoratidzwa neA1.

Kana paine shanduko yakajairika kuchinjiso cheIEC chakaunzwa, iwo ma tag anotakura nhamba yekuchinjika, semuenzaniso, zvakajairika zvakagadziridzwa zvakaunzwa neCENELEC kuIEC kugadzirisa 1 zvinoratidzwa neC1.

Iyo UK kutora chikamu mukugadzirira kwayo kwakapihwa neTechnical Committee PEL / 37, Surge Arresters - High Voltage, kune Subcommittee PEL / 37/1, Surge arresters - Low voltage.

Rondedzero yemasangano anomiririrwa pane ino subcommittee inogona kuwanikwa pachikumbiro kuna secretary wayo.

Chinyorwa ichi hachireve kusanganisira zvese zvinodiwa muchibvumirano. Vashandisi vane basa nekushandisa kwayo kwakaringana.

Kuteerana neBritish Standard hakugone kupa hutachiona kubva kuzvisungo zviri pamutemo.

NHANGANYAYA

Chinangwa cheiyi International Standard ndechekuziva izvo zvinodiwa zveSurge Protective Devices (SPDs) inoshandiswa mukuchengetedza nharembozha uye kuratidza systen kana muenzaniso ow-voltage dhata, izwi, uye ma alarm macircuit. Ese masisitimu aya anogona kuratidzwa kumhedzisiro yemheni uye kukanganisa kwemutsara, kungave kuburikidza nekubata kwakananga kana kuburitswa. Iyi mhedzisiro inogona kuisa sisitimu kune ekuwandisa kana ekuwandisa kana ese ari maviri, ayo nhanho dzakaringana zvakakwana kukuvadza sisitimu. MaSPD anoitirwa kupa dziviriro zvakare pamusoro pemhepo uye mafashama anokonzerwa nemheni uye magetsi tambo zvikanganiso. Uyu muyero unotsanangura bvunzo uye zvinodikanwa izvo zvinomisikidza nzira dzekuyedza maPSD uye kuona mugari wenhaka kuita.

Iyo SPDs yakataurwa mune ino International Standard inogona kunge iine overvoltage dziviriro zvikamu chete, kana musanganiswa we overvoltage uye overcurrent chengetedzo zvinhu zvekuchengetedza Zvigadzirwa zvine overcurrent zvidziviriro zvikamu chete hazvisi mukati mekufukidzwa kweichi chiyero. Nekudaro, zvishandiso zvine chete zvakawandisa
yakavharwa muchiwedzera.

Iyo SPD inogona kuve iine akati wandei kupfuuridza uye kwakapfuura kuchengetedza zvikamu. Ese maSDD anoedzwa pane "nhema bhokisi" hwaro, kureva kuti, huwandu hwezviteshi zvePSD zvinotarisa nzira yekuyedza, kwete huwandu hwezvinhu zviri muPSD. Kugadziriswa kwePSD kunotsanangurwa muna 1.2. Muchiitiko cheakawanda mitsara SPDs, tambo yega yega inogona kuyedzwa yakazvimiririra kune vamwe, asi panogona zvakare kuve nechido chekuyedza mitsara yese panguva imwe chete.

Ichi chiyero chinofukidza akasiyana siyana mamiriro ekuyedza uye zvinodiwa; iko kushandiswa kweimwe yeiyi kuri mukufunga kwemushandisi. Izvo zvinodikanwa zveichi chiyero zvine chekuita nemhando dzakasiyana dzeSPD zvinotsanangurwa muna 1.3. Ipo ichi chiri chiyero chekuita uye humwe hunyanzvi hunodiwa nemaSPD, mwero wekukundikana nedudziro yavo zvasiirwa mushandisi. Sarudzo uye nheyo dzekushandisa dzichafukidzwa muIEC 61643-22 1).

Kana iyo SPD ichizivikanwa sechinhu chimwe chete chinhu, inofanirwa kusangana nezvinodiwa zveyero yakakodzera pamwe neayo ari mune ino standard.