Kev kos npe ntawm Circuit Court breakers. Hom, yam ntxwv thiab lub hom phiaj ntawm Circuit Court breakers

Cov txheej txheem:

Kev kos npe ntawm Circuit Court breakers. Hom, yam ntxwv thiab lub hom phiaj ntawm Circuit Court breakers
Kev kos npe ntawm Circuit Court breakers. Hom, yam ntxwv thiab lub hom phiaj ntawm Circuit Court breakers
Anonim

Piv rau cov pa hluav taws xob sib txuas, cov khoom siv tsis siv neeg tau muab tso rau hauv cov khoom xa tawm thiab tsim los tiv thaiv cov hluav taws xob thaiv hluav taws xob los ntawm cov hluav taws xob luv luv thiab overloads thaum lub zog hluav taws xob. Cov cim ntawm Circuit Court breakers, siv rau rooj plaub, muaj lawv cov yam ntxwv tseem ceeb. Los ntawm lawv koj tuaj yeem tau txais daim duab tiav ntawm lub cuab yeej.

Circuit breakers: marking and designations

Muaj ntau hom tshuab, piv txwv li, hom qub - AE20XXX.

Circuit Court breakers cim thiab npe
Circuit Court breakers cim thiab npe

Piv txwv li, rau lub tshuab AE2044, lub cim yog deciphered raws li nram no: 20 - txoj kev loj hlob, 4 - 63 A, 4 - ib tug ncej nrog thermal thiab electromagnetic tso tawm. Cov khoom siv tau txawv los ntawm cov yam ntxwv xim dub ntawm lub cev carbolite.

Cov txheej txheem kos npe ntawm cov tshuab yog tus qauv. Nws lub hom phiaj tseem ceeb yog txhawm rau nthuav qhia qhov tseem ceeb ntawm cov cuab yeej rau cov neeg siv kom nkag siab zoo tshaj plaws.

kev kos npe
kev kos npe

Lub cim ntawm cov kab hluav taws xob tau nyeem ntawm rooj plaub los ntawm sab saum toj mus rau hauv qab.

  1. Chaw tsim khoom lossis cov cim lag luam - Schneider, ABB, IEK, EKF.
  2. Series lossis catalog tus lej (ABB S200Y, SH200 series).
  3. Lub sijhawm tam sim no tus yam ntxwv (A, B, C) thiab ntsuas hauv amperes (Inom.).
  4. Rated voltage.
  5. Ntau tshaj qhov tso cai tawm tam sim no ntawm luv circuits
  6. chav kawm txwv tam sim no.
  7. Tus neeg tsim khoom tsab xov xwm, uas koj tuaj yeem pom cov tshuab no hauv phau ntawv teev npe.

Daim duab hauv qab no qhia tau tias ABB thiab Schneider Circuit Court breakers raug cim li cas.

Abb Circuit Breakers marking
Abb Circuit Breakers marking

Lub pob qhib yog cim lossis cim liab. Yog tias nws tsuas yog ib qho thiab nias, ces txoj haujlwm nyuaj siab txhais tau hais tias lub voj voog raug kaw.

Lub cim ntawm cov hluav taws xob hluav taws xob los ntawm cov tuam txhab loj muaj QR cov lej, uas qhia txog txhua yam ntaub ntawv hais txog tus qauv. Lawv lub xub ntiag yog ib hom kev lav zoo.

Environment influence

  1. Qhov ntsuas kub rau cov qauv ua qauv yog los ntawm -5 ° C txog + 40 ° C. Cov qauv tshwj xeeb muaj rau kev ua haujlwm sab nraum cov kev txwv no.
  2. Kev ua haujlwm ntawm cov khoom siv tau tso cai ntawm cov av noo txog li 50% ntawm 40 ° C. Nrog rau qhov txo qis hauv qhov ntsuas kub, qhov tso cai tso cai nce (txog 90% ntawm 20 ° C).

Tim cov tshuab

Cov tshuab tsis siv neeg raug xaiv nyob ntawm daim phiaj fais fab.

1. Tib ncej tshuab

Cov khoom siv yog siv hauv ib theemtes hauj lwm. Cov theem yog txuas nrog lub davhlau ya nyob twg sab saum toj, thiab cov load txuas nrog rau hauv qab. Cov cuab yeej txuas nrog rau qhov tawg ntawm cov theem xaim txhawm rau txhawm rau txiav lub zog ntawm lub nra thaum muaj xwm txheej ceev.

2. Bipolar tshuab

Tus qauv tsim, lub cuab yeej yog ib qho thaiv ntawm ob lub unipole txuas nrog lub zog. Qhov thaiv ntawm cov txheej txheem kaw yog tsim nyob rau hauv ib txoj kev uas lub theem yog hloov mus ua ntej xoom (raws li cov cai ntawm PUE).

3. Peb-ncej Circuit Court breaker

Lub cuab yeej ua haujlwm rau tib lub sijhawm tua lub zog ntawm peb-theem network thaum muaj xwm txheej. Peb lub davhlau ya nyob twg ua ke nrog 3 unipoles nrog kev teeb tsa rau kev ua haujlwm ib txhij. Electromagnetic thiab thermal tso tawm yog nqa tawm cais rau txhua lub voj voog.

Circuit breaker specifications

Cov tshuab tsis siv neeg tuaj yeem muaj cov yam ntxwv sib txawv ntawm lub sijhawm tam sim no:

a) tam sim no-dependent;

b) tam sim no-ywj siab;

c) ob-theem;d) peb theem.

Cov yam ntxwv ntawm Circuit Court breaker
Cov yam ntxwv ntawm Circuit Court breaker

Ntawm ntawm cov tshuab feem ntau koj tuaj yeem pom cov tsiaj ntawv Latin B, C, D. Cov cim ntawm lub voj voog hluav taws xob B, C, D qhia tus yam ntxwv uas qhia txog kev vam khom lub sijhawm ua haujlwm ntawm lub tshuab. tus ratio K=I/Inom.

  1. B - thermal tiv thaiv tau qhib tom qab 4-5 s thaum tus nqi nominal tshaj 3 zaug, thiab electromagnetic - tom qab 0.015 s. Cov cuab yeej tsim los rau cov khoom thauj uas tsis tshua muaj dej ntws, tshwj xeeb tshaj yog rau teeb pom kev zoo.
  2. C - tus yam ntxwv tshaj plaws ntawm cov tshuab slots,tiv thaiv kev teeb tsa hluav taws xob nrog cov dej ntws nruab nrab.
  3. D - automata rau loads nrog siab pib tam sim no.

Qhov peculiarity ntawm lub sijhawm-tam sim no tus yam ntxwv yog nyob rau hauv qhov tseeb tias nrog tib qhov kev ntaus nqi ntawm cov tshuab tsis siv neeg hom B, C thiab D, lawv cov kev mus ncig yuav tshwm sim ntawm qhov sib txawv tam sim no ntau dhau.

marking ntawm Circuit Court breakers b c d
marking ntawm Circuit Court breakers b c d

Lwm yam ntawm cov tshuab slots

  1. MA - tsis muaj thermal tso tawm. Yog hais tias ib tug tam sim no relay ntsia nyob rau hauv lub Circuit Court, nws yog txaus rau nruab ib lub Circuit Court breaker nrog tsuas yog luv luv-circuit tiv thaiv.
  2. A - thermal tso tawm mus ncig thaum Inom. yog tshaj 1.3 npaug. Hauv qhov no, lub sijhawm kaw tuaj yeem yog 1 teev. Yog tias qhov ntsuas tau dhau los ntawm 2 zaug lossis ntau dua, qhov kev tso tawm tam sim no tau qhib tom qab 0.05 s. Yog tias qhov kev tiv thaiv no ua tsis tiav, tom qab 20-30 vib nas this, kev tiv thaiv overheating ua haujlwm. Lub tshuab nrog tus yam ntxwv A yog siv los tiv thaiv hluav taws xob. Cov khoom siv nrog tus yam ntxwv Z kuj tau siv ntawm no.

Cov txheej txheem xaiv tshuab

  1. Inom.- tshaj uas ua rau kev ua haujlwm ntawm kev tiv thaiv overload. Kev ntsuam xyuas raug xaiv raws li qhov tso cai tshaj plaws ntawm cov xaim tam sim no, thiab tom qab ntawd txo qis los ntawm 10-15%, xaiv nws los ntawm tus qauv ntau yam.
  2. Trip tam sim no. Cov chav kawm hloov ntawm lub Circuit Court breaker yog xaiv nyob ntawm seb hom load. Rau cov hom phiaj hauv tsev, cov yam ntxwv feem ntau yog C.
  3. Kev xaiv xaiv yog ib yam khoom ntawm kev xaiv kaw. Cov tshuab raug xaiv raws li qhov ntsuas tam sim no, yog li ntawd nyob rau hauv thawj qhov chawpab kiag li lawm nyob rau sab load tau triggered. Ua ntej tshaj plaws, kev tiv thaiv raug muab tua nyob rau hauv qhov chaw uas luv luv Circuit Court tshwm sim los yog lub network yog overloaded. Lub sij hawm xaiv tau raug xaiv kom lub sijhawm ua haujlwm ntev dua rau lub tshuab nyob ze rau lub zog hluav taws xob.
  4. Ntau tus ncej. Lub tshuab tsis siv neeg nrog plaub tus ncej txuas nrog peb-theem cov tswv yim, thiab mus rau ib qho kev tawm tswv yim ib zaug - nrog ib lossis ob. Cov teeb pom kev zoo thiab cov khoom siv hauv tsev ua haujlwm ntawm ib lub davhlau ya nyob twg. Yog tias lub tsev muaj hluav taws xob boiler lossis peb-theem hluav taws xob lub cev muaj zog, peb-ncej tshuab siv rau lawv.

Lwm txoj kev xaiv

Thaum lub tshuab hluav taws xob raug yuav, cov yam ntxwv yuav tsum raug xaiv raws li kev khiav haujlwm thiab kev sib txuas. Txhua lub tshuab yog tsim los rau qee lub sijhawm ua haujlwm. Nws tsis pom zoo kom siv nws ua qhov hloov pauv. Tus naj npawb ntawm cov tshuab raug xaiv raws li xav tau. Nco ntsoov nruab ib qho kev taw qhia, thiab tom qab nws - ntawm txoj kab teeb pom kev zoo, lub qhov (socket) thiab cais rau cov neeg siv khoom muaj zog. Mounting txoj kev yuav txawv rau cov qauv sib txawv. Yog li ntawd, cov cuab yeej zoo ib yam li cov uas tau teeb tsa hauv lub txee raug xaiv.

marking ntawm Circuit Court breakers
marking ntawm Circuit Court breakers

Zaj lus

Kev kos cov kab hluav taws xob yuav tsum xaiv lawv raws li cov kev xav tau tshwj xeeb. Lawv cov yam ntxwv muaj feem cuam tshuam ncaj qha rau ntu ntu ntawm cov xaim hluav taws xob thiab hom kev thauj khoom. Nyob rau hauv cov ntaub ntawv ntawm luv luv circuits, electromagnetic tso tawm yog qhib ua ntej ntawm tag nrho cov, nyob rau hauv cov ntaub ntawv ntawm lub sij hawm overloads - thermal tiv thaiv.

Pom zoo: