Zvakafanana uye musiyano uripo pakati peRing Main Unit neMetal Clad mukushandiswa

Ring Main Unit inoshandiswa mu ring network power supply kubatanidza masource maviri emagetsi kana zvikamu zve switch cabinet. Basa guru nderekupatsanura zvikamu zviviri, ne single function uye diki. Central cabinet imhando ye switch cabinet inoshandiswa nevashandisi vekupedzisira, ine full functions uye vhoriyamu yakakura. Kune mhando dzakawanda dzema mid cabinet, dzinogona kukamurwa kuita ma switch cabinet anopinda neanobuda, metering cabinet, transformer cabinet, uye ma transformer cabinet akamboshandiswa. Ma switch ari muma mid cabinet anogona kuve ne automatic protection devices. Kana tsaona ikaitika, protection device inotumira chiratidzo chekuti switch iite. Action inodonha uye inodzima simba remagetsi. Mazhinji ema VS1 vacuum circuit breakers anoshandiswa mukabati. Nekuda kwekushandiswa kwakasiyana, chimiro uye kusarudzwa kwezvikamu zvemaviri zvakasiyana zvikuru.

Muhurongwa hwemagetsi nekuparadzira, kuyera kwemagetsi kwakakosha kunofanirwa kupihwa kune metering ine simba rakawanda pane metering ine simba rakaderera; metering ine simba rakaderera inogona kutariswa chete kana pasina nzira yekuisa metering kudivi rine simba rakawanda; panguva ino, metering ine simba rakaderera inofanira kuiswa kudivi re "mberi". , Kureva kuti, pamberi pemutsetse unopinda une simba rakaderera uye kumashure kwetransformer, asi metering cabinet haigone kudzivirirwa nekabhineti ine simba rakaderera, saka mumamiriro ezvinhu akajairwa, inofanira kunge iri pasi pekuchengetedzwa kweswitch ine simba rakawanda yetransformer. Muchiitiko ichi, kabhineti yeringi nekabhineti yepakati zvinogona kushandiswa.

Parizvino, Ring Main Unit haingogone kungova nemidziyo yemagetsi inosanganiswa ne load switch-fuse, asiwo ma circuit breakers, akadai se domestic XGN, Schneider's SM6, Siemens 8DJH, ABB's SAFE, nezvimwewo, uye dziviriro yechipiri inogona kugadzirirwa mudziyo wekudzivirira microcomputer. Zvisinei, circuit breaker yakaiswa mu ring main unit ine muganho wemutoro, uye miganhu ye ring main unit yemugadziri wega wega yakasiyana. Sezvakaita Schneider RM6 Ring Main Unit, dziviriro ye transformer's high-voltage switch yakakura kupfuura kana yakaenzana ne2000KVA, uye circuit breaker + VIP300 microcomputer dziviriro inofanira kushandiswa. Mutoro uri pamitsetse inopinda neinobuda ye central cabinet hauna muganho.

Ehe, nekuvandudzwa kwetekinoroji yemagetsi iripo, marudzi ese ari maviri emakabati akura zvakanyanya. Makabati epakati ari kuramba achiderera; Ring Main Unit iri kuramba ichishanda; asi kazhinji, makabati epakati anoshandiswa muMushandisi wekupedzisira ndiyo michina yekudzora, asi mutengo wayo wakakwira; ring network cabinet yakatanga kugadzirwa kugadzirisa dambudziko remagetsi nekutanga, uye basa rayo rakareruka, asi chimiro chayo chiri nyore, vhoriyamu idiki, uye mutengo wakaderera. Munguva pfupi yapfuura, mabasa acho agara achiwedzerwa, kunyanya saizi yayo diki iri nyore kuiswa mukati me "box change", saka ine budiriro yakanaka kwazvo; parizvino Ring Main Unit haingoshandiswi se contact switch cabinet chete, asiwo inogona kushandiswa se loop in and loop out switch Cabinet, metering cabinet, PT cabinet.
Saka, kutaura zvakananga, kana zviviri izvi zvichigona kuchinjaniswa, nekuda kwekusaenderana kwebasa uye mashandiro ezvigadzirwa zvevagadziri vakasiyana-siyana, hazvisi nyore kutaura. Panyaya yekudzikiswa kwemitengo, kabhineti ye ring network ine zvakanakira. Nekuvandudzwa kwetekinoroji ye ring main unit, kushandiswa kwe ring main unit ne centre cabinet kunogona kupindirana kakawanda. Asi mu high-voltage power distribution system ine ma currents makuru ari pamusoro pe 1250A, kabhineti ye ring main haigone kutsiva kabhineti yepakati.