Zvinodiwa zveDual Power Switch paKuchinja Pole Number

Kunyangwe mutsara usina kwawakarerekera unoda kudimburwa rinhiswitchingpakati pe transformer magetsi uye jenareta magetsi ekupa (kusanganisira kushandiswa kwehuviri simba otomatiki kushandura switch) zvinoenderana nehuwandu hwemamiriro kana zvinhu, kusanganisira iyo yepasi system yeaviri magetsi zvishwe, ingave maviri magetsi zvishwe zvakabatana kune sam.e low-voltage switchboard, uye nzira iyo system grounding inogadziriswa.Kunyangwe dunhu remagetsi rakashongedzerwa neRCD kana single-phase grounding fault protection, etc., mamiriro acho akanyanya kuoma.Nechikonzero ichi, IEC mazinga haaite gadziriro dzakajeka.

Ngatitarisei kune anotevera akasiyana maviri-simba ekugadzirisa zvirongwa:

1.Two magetsi emagetsi akaiswa panzvimbo imwe chete, uye anogovera zvakafananalow-voltage distribution cabinet, loop inouya kana simba rakapetwa kavirichinja chinjaloop inofanira kushandiswa4 danda rekutamisa switch.

Ngatitarisei Mufananidzo 1

Mufananidzo 1

Kubva kuFIG.1, tinogona kuona kuti maviri maRCD-akachengetedzwa3 pole circuit breakersQF11 uye QF21 yakaiswa kumucheto kwemberi kwemagetsi emagetsi maviri emagetsi ekupa interswitching.Isu tinofungidzira kuti QF11 yakavharwa uye QF21 yakadzimwa.
Tinogona kuona kuti kana kukanganisa kwepasi kwechikamu chimwe chete kana katatu-chikamu chisina kuenzana chinoitika mumagetsi emagetsi, imwe-chikamu chepasi chinokanganisa ikozvino kana mutsara usina mutsara unokonzerwa nenhatu-phase unbalance inogona kuyerera kuburikidza neN line uye PE line ye. iyo QF21 dunhu.Nekuti QF21 RCD dziviriro, QF21 iri mukudzivirira kushanda mamiriro, isingakwanise kuvhara nemazvo.
Uye zvakasiyana.Muchifananidzo 1, ikozvino inoyerera kuburikidza nemutsara usina kwawakarerekera kana PE mutsara weQF21 loop ndiyo isina kwayakarerekera mutsara wazvino weiyo isiri-yakajairika nzira.Iyo nzira iyo iyo isina kwayakarerekera mutsara weiyo isina kurongeka nzira inoyerera inogona kuumba yakavharidzirwa loop, uye iyo magineti inogadzirwa muyakavharidzirwa loop inogona kukanganisa ruzivo rwemidziyo yeruzivo, uye panguva imwechete inogona kuita kuti muparadzi wedunhu ashande zvisizvo.Mhinduro ndeye kushandisa quadrupole switch yeQF11 neQF21 kugura nzira iyo kukanganisa ikozvino kuyerera.

2. Dual-channel kugovera matransformer ndiwo ega ega ega ega ega ega, kana matransformer nemajenareta edhiziri ndiwo ega ega ega ega ega ega, uye mapoinzi asina kwaakarerekera etransformer nemajenareta akavakirwa zvakananga pedyo.Kana maseti maviri emagetsi emagetsi akagovera yakaderera voltage switchboard, iyo inopinda loop inofanira kushandisa 4 pole switch, sezvakaratidzwa muFigure 2.

Mufananidzo 2

Kubva paMufananidzo 2, tinogona kuona kuti iyo yakaderera-voltage yekugovera network ndeye tn-S yevhu, uye iyo isina kwayakarerekera poindi ye transformer yakavakirwa padyo, ichitungamira matatu-chikamu, N line uye PE mutsara kubva kune transformer kuenda kune yakaderera-voltage. distribution cabinet's incoming circuit.Iyo yakaderera-voltage inopinda yedunhu breaker uye busbar circuit breaker ndiwo matatu-pole switch.Iyo inouya yedunhu breaker yakashongedzerwa ne-single-phase grounding fault dziviriro.

Mukushandiswa kwakajairwa, muparadzi wedunhu akavharwa uye busbar yakavhurika.Kana chikanganiso chekumisa-chikamu chikaitika kumidziyo yemagetsi mubhazi ⅰ, tinogona kuona kuti nzira chaiyo ndeyotevera: goko remidziyo yemagetsi → waya yePE → kubatanidzwa kwePE waya neN waya → chikamu ⅰ N waya → Chikamu ⅰ kugadzirisa kukanganisa ikozvino kuonekwa → Chikamu ⅰ transformer.

Iyi nzira ndeyechokwadi.Nekuda kwekusava nechokwadi kweiyo N line uye PE mutsara wekubatanidza saiti, semuenzaniso, iyi poindi inogona kuisirwa pane maviri mumutsara loop mumutsara, saka nzira isina kurongeka yeimwe-chikamu chekudzika chikanganiso chazvino chinogona kunge chiri: iyo magetsi emidziyo yakavharirwa. - PE line - Ⅱ mumutsara, PE line uye N mutsara uchibatanidza nzvimbo - Ⅱ nguva yeN mutsara - Ⅱ nguva yepasi kukanganisa ikozvino - Ⅰ nguva yeN line - Ⅰ transformer pasi kukanganisa ikozvino - > Ⅰ ndima.Ikozvino inoyerera munzira iyi ndiyo mutsara usina kwawakarerekera wenzira isina kujairika, iyo inogona kukonzera rwendo rwe ⅱ chikamu chinopinda chedunhu chinotyora, zvichiita kuti tsaona ikure.

Mhinduro ndeyokushandisa aquadrupole switchkugura nzira isina kurongeka iyo iyo kukanganisa ikozvino inoyerera uye kubvisa yakavanzika njodzi yetsaona.Saizvozvo, kana imwe yevashanduri ikatsiviwa nejenareta, jenareta inopinda wedunhu breaker inofanirawo kushandisa quadrupole switch.Mhedziso: Kana magetsi maviri ari mukamuri rimwe chete (pasi) uye achigovana imwechete yakaderera voltage yekugovera kabati, yakaderera voltage yekugovera kabati yekupinza mutsetse uye bhazi loop inoda kushandisa 4 pole switch.

3. Maseti maviri emagetsi emagetsi ari mukamuri imwechete (yakajairika pasi), asi haagovera yakaderera-voltage kabati yekugovera, saka simba rekushandura switch mune yechipiri midziyo yekugovera inogona kutora 3 pole switch, sezvakaratidzwa mumufananidzo 3 .

Mufananidzo 3

FIG.3ATSEinogona kutora matatu-nhanho switch kana iri backup magetsi.Kubva paMufananidzo 3, tinogona kuona kuti transformer nejenareta zviri mune imwechete yakaderera voltage kugovera chiteshi, asi ivo havagove yakaderera voltage kugovera kabhineti.Isu tinoona kusaenzana kwechikamu chetatu mumutoro wedunhu rinoputika QF11 chechipiri chekugovera midziyo, uye nokudaro matatu-chikamu chisina kuenzana ikozvino chinoratidzika mumutsara usina kutungamira wezvigadzirwa zvemagetsi.

Nzira yezvikamu zvitatu zvisingaenzaniswi zvemazuva ano ndezvizvi: mutsara usina mutsara N danda remagetsi emagetsi → mutsara usina mutsara wezvigadzirwa zvechipiri zvekugovera → mutsara usina kusimba we transformer kugovera → kuonekwa kwepasi kukanganisa ikozvino kwe transformer inopinda loop → neutral point N ye transformer.Iyi nzira ndiyo yakajairika nzira.

KubvaATSEis unidirectional mukutendeuka, inogona chete kusarudza pakati pe transformer feed uye jenareta feed, saka neutral line ikozvino haioneki mumakwara asina kujairika.Mune ino kesi, iyo ATSE switch inogona kushandisa matatu-pole chigadzirwa.