Qhov yuav tsum tau muaj ntawm Dual Fais Fab Hloov rau Switching Ncej Number

Txawm hais tias cov kab nruab nrab yuav tsum tau txiav tawm thaum twghloovnruab nrab ntawm transformer fais fab mov thiab generator fais fab mov (nrog rau kev siv ntawmdual fais fab tsis siv neeg hloov pauv hloov) nyob ntawm ib tug xov tooj ntawm tej yam kev mob los yog tej yam, nrog rau cov hom ntawm grounding system ntawm ob lub hwj chim loops, seb ob lub hwj chim loops yog txuas nrog lub same low-voltage switchboard, thiab txoj kev ntawm qhov system grounding yog teem.Txawm hais tias lub zog hluav taws xob tau nruab nrog RCD lossis ib-theem grounding txhaum tiv thaiv, thiab lwm yam, qhov xwm txheej yuav nyuaj dua.Vim li no, IEC cov qauv tsis ua kom pom tseeb.

Cia peb saib cov nram qab no sib txawv dual-power configuration schemes:

1.Ob qhov khoom siv hluav taws xob tau nruab rau hauv tib qhov chaw, thiab sib koom ua kelow-voltage distribution txee, lub voj nkag los yog ob lub zoghloov pauv hloovlub voj yuav tsum siv4 ncej hloov mus.

Wb saib daim duab 1

Daim duab 1

Los ntawm FIG.1, peb tuaj yeem pom tias ob RCD tiv thaiv3 ncej Circuit Court breakersQF11 thiab QF21 tau teeb tsa nyob rau pem hauv ntej kawg ntawm cov khoom siv hluav taws xob rau kev sib txuas ntawm ob lub zog.Peb xav tias QF11 raug kaw thiab QF21 tawm.
Peb tuaj yeem pom tias txawm tias qhov kev ua txhaum ib theem hauv av lossis peb-theem tsis sib npaug tshwm sim hauv cov khoom siv hluav taws xob, ib theem av txhaum tam sim no lossis cov kab nruab nrab tam sim no tshwm sim los ntawm peb-theem tsis sib npaug yuav ntws los ntawm N kab thiab PE kab ntawm QF21 Circuit Court.Vim tias QF21 RCD tiv thaiv, QF21 hauv kev tiv thaiv lub xeev, tsis tuaj yeem kaw zoo.
Thiab vice versa.Hauv daim duab 1, qhov tam sim no ntws los ntawm cov kab nruab nrab lossis PE kab ntawm QF21 voj yog cov kab nruab nrab tam sim no ntawm txoj kev tsis zoo.Txoj hauv kev uas cov kab nruab nrab tam sim no ntawm txoj kev tsis raws cai ntws tuaj yeem tsim lub voj voog, thiab cov hlau nplaum tsim nyob rau hauv lub voj voog yuav cuam tshuam nrog cov ntaub ntawv rhiab heev, thiab tib lub sijhawm yuav ua rau lub Circuit Court breaker ua haujlwm tsis raug.Txoj kev daws teeb meem yog siv lub quadrupole hloov rau QF11 thiab QF21 los txiav tawm txoj hauv kev uas qhov txhaum tam sim no ntws.

2. Dual-channel faib transformers yog ib leeg lub zog thaub qab, los yog transformers thiab diesel generators yog ib leeg lub backup fais fab mov, thiab cov ntsiab lus nruab nrab ntawm transformers thiab generators yog ncaj qha grounded nyob ze.Yog hais tias ob pawg ntawm cov khoom siv hluav taws xob sib faib cov hluav taws xob tsis tshua muaj hluav taws xob, lub voj voog tuaj yuav tsum siv 4 ncej hloov, raws li qhia hauv daim duab 2.

Daim duab 2

Los ntawm daim duab 2, peb tuaj yeem pom tias cov khoom siv hluav taws xob tsawg yog tn-S earthed hom, thiab qhov nruab nrab ntawm lub transformer yog grounded nyob ze, ua rau peb-theem, N kab thiab PE kab los ntawm transformer mus rau qhov tsawg-voltage. kev faib khoom txee qhov khoom siv hluav taws xob.Qhov tsawg-voltage nkag Circuit Court breaker thiab busbar Circuit Court breaker yog peb-ncej keyboards.Lub Circuit Court breaker yog nruab nrog ib-theem grounding txhaum tiv thaiv.

Hauv kev siv ib txwm, lub Circuit Court breaker raug kaw thiab lub busbar qhib.Thaum ib qho kev ua txhaum hauv av tshwm sim rau cov khoom siv hluav taws xob ntawm lub tsheb npav ⅰ, peb tuaj yeem pom tias txoj hauv kev yog raws li hauv qab no: cov khoom siv hluav taws xob plhaub → PE xaim → qhov sib txuas ntawm PE xaim thiab N xaim → ntu ⅰ N xaim → Tshooj ⅰ grounding txhaum tam sim no → Seem ⅰ transformer.

Txoj kev no yog lawm.Vim tias qhov tsis paub meej ntawm N kab thiab PE kab sib txuas qhov chaw, piv txwv li, qhov taw tes no tuaj yeem ntsia tau rau ntawm ob lub voj voog mus rau hauv kab, yog li txoj kev tsis raug cai ntawm ib-theem grounding txhaum tam sim no yuav yog: cov khoom siv hluav taws xob. - PE kab - Ⅱ rau hauv kab, PE kab thiab N kab sib txuas qhov chaw - Ⅱ lub ​​sij hawm ntawm N kab - Ⅱ lub ​​sij hawm ntawm av txhaum tam sim no - Ⅰ lub sij hawm ntawm N kab - Ⅰ transformer av txhaum tam sim no -> Ⅰ kab lus.Tam sim no ntws los ntawm txoj kev no yog cov kab nruab nrab tam sim no ntawm txoj kev tsis sib xws, uas yuav ua rau kev mus ncig ntawm ⅱ ntu nkag Circuit Court breaker, ua rau kev sib tsoo loj.

Kev daws yog siv aquadrupole hloovtxiav tawm txoj kev tsis sib xws los ntawm qhov kev txhaum tam sim no ntws thiab tshem tawm cov kev phom sij zais cia ntawm kev sib tsoo.Ib yam li ntawd, yog tias ib qho ntawm cov hloov pauv hloov nrog lub tshuab hluav taws xob, lub tshuab hluav taws xob cov khoom siv hluav taws xob tuaj yeem yuav tsum siv lub quadrupole hloov.Cov ntsiab lus: Thaum ob lub zog siv hluav taws xob nyob hauv tib chav (hauv av) thiab sib koom tib lub tshuab hluav taws xob tsis tshua muaj hluav taws xob, qhov hluav taws xob tsis tshua muaj hluav taws xob faib txee inlet kab thiab lub voj voog tsheb npav yuav tsum siv 4 ncej hloov.

3. Ob pawg ntawm cov khoom siv hluav taws xob yog nyob rau hauv tib chav (cov hauv av), tab sis lawv tsis sib faib cov khoom siv hluav taws xob tsawg, yog li kev hloov hluav taws xob hloov hauv cov khoom siv thib ob tuaj yeem txais 3 ncej hloov, raws li pom hauv daim duab 3. .

Daim duab 3

FIG.3ATSEtuaj yeem txais peb-theem hloov pauv thaum nws yog lub zog thaub qab.Los ntawm daim duab 3, peb tuaj yeem pom tias lub tshuab hluav taws xob thiab lub tshuab hluav taws xob nyob hauv tib qhov chaw faib hluav taws xob tsawg, tab sis lawv tsis faib cov khoom siv hluav taws xob tsawg.Peb pom qhov tsis txaus ntawm peb-theem hauv kev thauj khoom ntawm Circuit Court breaker QF11 ntawm cov khoom siv thib ob, thiab yog li peb-theem tsis sib npaug tam sim no tshwm nyob rau hauv cov kab nruab nrab ntawm cov khoom siv hluav taws xob.

Txoj kev ntawm peb-theem tsis sib npaug tam sim no yog raws li hauv qab no: nruab nrab kab N ncej ntawm cov khoom siv hluav taws xob → nruab nrab kab ntawm cov khoom siv faib khoom nruab nrab → nruab nrab ntawm cov khoom siv hluav taws xob faib hluav taws xob → nrhiav pom cov av txhaum tam sim no ntawm cov khoom siv hluav taws xob → nruab nrab point N ntawm transformer.Txoj kev no yog txoj kev qub.

Txij li thaumATSEyog unidirectional nyob rau hauv kev hloov dua siab tshiab, nws tsuas xaiv tau ntawm transformer pub thiab generator pub, yog li nruab nrab kab tam sim no tsis tshwm sim nyob rau hauv unconventional paths.Hauv qhov no, ATSE hloov tuaj yeem siv cov khoom peb-ncej.