Iyo leakage circuit breaker inoshanda sei

Leakage circuit breakerinonyanya kuumbwa ne zero sequence current transformer, electronic component board, leakage release uye circuit breaker ine overload uye pfupi-circuit dziviriro.Iyo leakage yekudzivirira chikamu chekuvuza wedunhu breaker inoumbwa ne zero sequence ikozvino transformer (inonzwa chikamu), inoshanda controller (yekudzora chikamu) uye electromagnetic kuburitswa (chiito uye kuuraya chikamu).Zvese zvikamu uye zero mitsara yedunhu rakachengetedzwa guru rinopfuura nepakati pesimbi ye zero sequence ikozvino transformer kuti iite chikamu chekutanga che zero sequence ikozvino transformer.Iyo yekushanda musimboti wekuvuza wedunhu breaker inogona kunzwisiswa zvakanyanya se:leakage circuit breakerhaigone kuchengetedza maviri-phase electric shock inobata zvikamu zviviri panguva imwe chete.Zvinotevera zvinoratidzwa:

Mumufananidzo, l is electromagnet coil, inogona kutyaira banga switch K1 kuti ibvise kana ikadonha.Ruoko rwebhiriji rega rega rwakabatanidzwa munhevedzano nembiri 1N4007 kuvandudza iyo inomira voltage.Maitiro ekupikisa eR3 neR4 akakura kwazvo, saka kana K1 yakavharwa, ikozvino inoyerera kuburikidza neL iduku kwazvo, iyo haina kukwana kuita kuti shanduko K1 izarure.R3 neR4 ivoltage yakaenzana resistors ye thyristors T1 uye T2, iyo inogona kuderedza voltage kutsungirira zvinodiwa zve thyristors.K2 ndiro bhatani rekuyedza, iro rinoita basa rekufananidza kuvuza.Dzvanya bhatani rekuyedza K2 uye K2 yakabatana, iyo yakaenzana nekudonha kweiyo yekunze mhenyu mutsara kupasi.Nenzira iyi, iyo vector sum yeazvino yeatatu-chikamu tambo yemagetsi uye zero mutsara unopfuura nepamagnetic mhete haisi zero, uye kune induced voltage kubuda kumativi ese maviri a uye B eiyo coil yekuona pamagnetic ring. , iyo inokurumidza kuunza T2 conduction.Sezvo C2 ichichajwa neimwe voltage pachine nguva, mushure mekunge T2 yavhurwa, C2 ichaburitsa kuburikidza neR6, R5 uye T2 kuburitsa voltage paR5 uye kukonzeresa T1 kuvhura.Mushure mokunge T1 neT2 zvavhurwa, ikozvino inoyerera kuburikidza neL inowedzera zvikuru, kuitira kuti magetsi emagetsi aite uye dhiraivha yeK1 inobviswa.Basa rebhatani rekuedza nderekutarisa kana basa remudziyo rakamira chero nguva.Nheyo yemaitiro emagetsi emagetsi anokonzerwa nekudonha kwemagetsi emidziyo yemagetsi yakafanana.R1 ndeye varistor yekudzivirira kwe overvoltage.Izvi zvinoumba iro rakakosha basa rekudzivirira kuvuza mune yekushanda musimboti wekuvuza wedunhu breaker.

Chekupedzisira, tsanangura muchidimbu musimboti wekushanda uye mamwe mashandisirwo akajairika edzimba dzese leakage circuit breaker.Sechishandiso chinoshanda chemagetsi kuchengetedza tekinoroji,leakage circuit breakeryakashandiswa zvikuru uye yakaita basa rinokosha.Zvinoenderana netsvagiridzo yezvokurapa, kana muviri wemunhu uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge 50Hz, uye magetsi emagetsi ari 30mA kana zvishoma, anogona kumira maminetsi akati wandei.Izvi zvinotsanangura yakachengeteka ikozvino yekuvhundutsa kwemagetsi emunhu uye inopa hwaro hwesainzi hwekugadzira uye kusarudzwa kwemidziyo yekudzivirira yekudonha.Naizvozvo, leakage circuit breakers inogadzikwa mubazi remagetsi uko midziyo yemagetsi nemidziyo munzvimbo dzakanyorova dziripo.Icho chiyero chinoshanda chekudzivirira kushamwaridzana kusina kunanga uye kushamiswa kwemagetsi.Muchiyero chenyika, zviri pachena kuti "kunze kwechigadziko chemagetsi emhepo, mamwe maseketi emagetsi emagetsi achave akashongedzerwa nemidziyo yekudzivirira yekudonha".Iyo yekuvuza chiitiko ikozvino ndeye 30mA uye nguva yekuita ndeye 0.1s.Ndinofunga izvi zvakakosha kuhupenyu hwedu hwezuva nezuva uye zvakakodzera kuti titarise.

Schematic dhizaini yekushanda musimboti wekuvuza mudziviriri wechitatu-chikamu mana waya magetsi ekupa system.TA ndiyo zero kutevedzana ikozvino shanduko, GF ndiyo main switch, uye TL ndiyo shunt kuburitsa coil yeiyo main switch.

Pasi pemamiriro ekuti dunhu rakachengetedzwa rinoshanda zvakajairika pasina kudonha kana kuvhunduka kwemagetsi, sekureva kwemutemo waKirchhoff, huwandu hweazvino phasors kudivi rekutanga reTA hwakaenzana ne zero, ndiko kuti, nenzira iyi, chikamu chechipiri cheTA chinoita. kwete kuburitsa induced electromotive simba, iyo leakage mudziviriri haiite, uye sisitimu inochengetedza yakajairika magetsi ekupa.

Kana kuvuza kuchiitika mudunhu rakachengetedzwa kana mumwe munhu arohwa nemagetsi, nekuda kwekuvapo kwekubuda kwemvura, iyo phasor sum yechikamu chimwe nechimwe chiri kupfuura neparutivi rwekutanga rweTA haichaenzana ne zero, zvichikonzera kuvuza kwazvino IK.

Alternating magnetic flux inoonekwa pakati.Pasi pechiito chekuchinjanisa magineti flux, iyo induced electromotive force inogadzirwa mucoil padivi rechipiri reTL.iyi leakage sign inogadziriswa uye inofananidzwa kuburikidza nepakati link.Kana yasvika kukosha kwakafanotemerwa, iyo coil TL yekuburitswa kweshunt ye main switch inopihwa simba, main switch GF inotyairwa kuti ifambe otomatiki, uye dunhu rekukanganisa rinogurwa, kuitira kuti uone dziviriro.