Qhov txawv ntawm Tsawg Voltage thiab Nruab Nrab Voltage Switchgear: Qhov twg haum rau qhov project?

Tsawg-voltage thiab nruab nrab-voltage switchgear ua haujlwm sib txawv hauv lub tshuab hluav taws xob, yog li cov neeg yuav khoom yuav tsum tsis txhob xaiv ntawm lawv li yog tias lawv yog lwm qhov ntau thiab tsawg. Cov khoom siv nruab nrab-voltage tau txais, hloov pauv thiab tiv thaiv kev faib hluav taws xob ua ntej lub kauj ruam-down transformer lossis ntawm MV network node. Cov khoom siv hluav taws xob tsawg faib hluav taws xob tom qab hloov mus rau cov khoom siv qis qis, lub cev muaj zog, cov tsev, chargers lossis lwm yam khoom thauj. Kev xaiv kom raug ua raws li cov kab kos ib kab, nominal thiab siab tshaj qhov system voltage, txhaum theem, earthing, tiv thaiv lub tswv yim, load sij hawm, transformer kev npaj, cable interfaces, ib puag ncig thiab siv cov qauv. Ntau qhov project xav tau ob qho tib si. Txoj haujlwm yuav khoom yog txhawm rau txheeb xyuas txhua qhov kev sib dhos ntawm thaj tsam hluav taws xob thiab cov pov thawj - tsis txhob txiav txim siab seb LV lossis MV yog "zoo dua."

Dab tsi yog qhov sib txawv ntawm LV thiab MV Switchgear?

Tsawg-voltage switchgear tswj cov circuits nyob rau sab qis-voltage ntawm qhov system faib. Nws lub luag haujlwm yuav suav nrog cov neeg khwv tau nyiaj, ntu tsheb npav, cov khoom noj tawm, kev tswj lub cev muaj zog, ntsuas ntsuas thiab tiv thaiv. Nruab nrab-voltage switchgear ua haujlwm ntawm cov khoom siv hluav taws xob lossis kev faib tawm-voltage sab thiab tuaj yeem tau txais thiab faib cov khoom noj, hloov pauv hloov lossis tsim ib feem ntawm lub nplhaib lossis radial network.

Cov lus qhia yuav tsum ua raws li qhov project txoj cai thiab tus qauv. Daim ntawv qhia kev lag luam tsis txaus. Daim duab kab ib kab yuav tsum txheeb xyuas qhov hluav taws xob ntawm txhua lub tsheb npav thiab cov khoom siv, thaum cov khoom siv tshwj xeeb hais txog cov qauv siv tau thiab kev ntaus nqi.

Pib Nrog Daim Duab Ib Leeg Kab thiab Transformer Txoj Haujlwm

Nrhiav qhov chaw siv hluav taws xob, MV cov khoom xa tuaj, MV switchgear, transformer, LV lub ntsiab sib dhos thiab cov khoom thauj hauv qab. Yog tias qhov project tau txais qhov nruab nrab voltage thiab hloov pauv ntawm qhov chaw, nws feem ntau xav tau MV hloov / tiv thaiv ua ntej ntawm transformer thiab LV faib tom qab nws. Ib qhov chaw me me uas muab ncaj qha ntawm qhov hluav taws xob tsawg tsuas yog xav tau pob LV xwb.

Tsis txhob yuav los ntawm ib daim ntawv teev npe thauj khoom ib leeg. SLD yuav tsum qhia qhov chaw ib txwm muaj thiab lwm qhov chaw, cov tsheb npav sib txuas, kev ntsuas kev hloov pauv, lub tshuab hluav taws xob lossis txuas txuas txuas ntxiv, nruab nrab thiab hauv av, kev ntsuas cov ntsiab lus thiab thaj tsam sib cais.

Cov kev hloov pauv twg yuav tsum cov neeg yuav khoom sib piv?

Vim li cas Voltage thiab Fault Level Separate Kev Txiav Txim?

Nominal voltage txheeb xyuas qhov system chav kawm, tab sis nws tsis txhais tau tias tag nrho cov kev ntsuas hloov pauv. Cov neeg yuav khoom yuav tsum tau muab qhov zaus, qhov yuav tsum tau rwb thaiv tsev, yav tom ntej luv luv-circuit tam sim no, lub sijhawm ua txhaum thiab kev npaj hauv av. Ob txoj haujlwm ntawm tib lub npe nominal voltage tuaj yeem xav tau cov cuab yeej sib txawv vim tias lub zog sib txuas thiab kev tiv thaiv-tawm lub sijhawm sib txawv.

Tsis txhob nug tus neeg muag khoom kom ua txhaum lub luag haujlwm ntawm transformer kVA ib leeg. Cable impedance, parallel qhov chaw, transformer impedance thiab upstream network pab yuav hloov tau. Siv qhov project txhaum kev kawm los yog qhia meej lub hauv paus tsim.

Kev Tiv Thaiv thiab Tswj Kev Ntseeg txawv li cas?

LV cov rooj sib txoos feem ntau tswj xyuas cov neeg tau txais txiaj ntsig thiab cov khoom siv hluav taws xob, kev tiv thaiv lub cev muaj zog, ntsuas thiab tswj. MV systems feem ntau xav tau kev tiv thaiv relays, tam sim no thiab voltage transformers, interlocking, mus ncig teb chaws circuits, tej thaj chaw deb teeb liab thiab kev sib koom tes nrog cov nqi hluav taws xob los yog transformer tiv thaiv.

Qhov txawv tsis yog tias MV muaj "kev tiv thaiv ntau dua." Txhua qhov system tiv thaiv cov cuab yeej sib txawv thiab thaj chaw ua txhaum. Tus neeg yuav khoom yuav tsum tshaj tawm cov haujlwm tiv thaiv, CT / VT cov cai, cov ntsiab lus sib txuas lus, tswj qhov hluav taws xob thiab kev mus ncig ua si. Cov khoom siv kos duab yuav tsum qhia tias cov haujlwm no raug siv li cas.

Thaum twg Qhov Project Xav Tau LV thiab MV Switchgear?

Lub Hoobkas, them hub, kev lag luam complex lossis microgrid tau txais cov khoom siv nruab nrab-voltage thiab faib cov hluav taws xob qis feem ntau xav tau cov saw sib txuas: MV tau txais / faib, transformer thiab LV lub ntsiab faib. Cov pob khoom tuaj yeem muab los ntawm ib tog lossis ob peb, tab sis lawv cov interfaces yuav tsum tau khov.

Cov ntsiab lus tseem ceeb suav nrog kev hloov pauv cable lossis tsheb npav sib txuas, kev tiv thaiv kev sib koom ua ke, ntsuas kev ua tswv cuab, pab lub zog, tswj cov teeb liab, lub ntiaj teb thiab lub luag haujlwm installation. Kev yuav txhua pob khoom sib cais yam tsis muaj lub sijhawm sib cuam tshuam tuaj yeem tsim qhov sib txawv txawm tias txhua tus neeg lub txee ua raws.

Qhov txawv ntawm Switchgear thiab Switchboard yog dab tsi?

Cov ntsiab lus qee zaum siv sib txawv los ntawm cheeb tsam thiab cov chaw tsim khoom. Cov neeg yuav khoom yuav tsum tsis txhob xaiv los ntawm daim ntawv lo. Txhais kev tsim kho, kev sib cais, kev tiv thaiv-khoom siv, kev nkag mus, kev ruaj ntseg, kev xav tau sab hauv-arc qhov twg siv tau, kev ntsuas tsheb npav, kev ntsuas luv luv thiab kev tswj hwm tus qauv.

Yog tias qhov kev qhia tshwj xeeb siv ob lo lus, thov daim ntawv sau npe thiab cov khoom siv sijhawm. Lub npe lag luam yuav tsum tsis txhob hla cov dej num hluav taws xob uas muaj nyob rau ntawm SLD.

Cov qauv twg yuav tsum cov neeg yuav khoom tso rau hauv RFQ?

Rau cov khoom siv hluav taws xob tsis tshua muaj hluav taws xob thiab cov khoom sib dhos, cov neeg yuav khoom feem ntau ntsuas cov khoom siv ntawm IEC 61439 series. Nruab nrab-voltage hlau-pob switchgear feem ntau hais los ntawm cov kev cai IEC 62271. Qhov tseeb ib feem, ib tsab, kev saws hauv zos thiab cov kev hloov kho yuav tsum tau teev tseg.

Tsis txhob siv IEC 60439-1 raws li kev siv tam sim no tsuas yog vim nws tshwm sim ntawm cov khoom lag luam qub; Nws tau raug hloov los ntawm IEC 61439 lub moj khaum. Tus neeg muag khoom yuav tsum xa rov qab ib nqe lus lossis kev ua raws li lub sijhawm qhia txog kev sib txawv. Cov qauv hauv tebchaws tuaj yeem suav nrog qhov project xav tau rau lawv, tab sis lawv yuav tsum tsis txhob ua ntsiag to hloov tus neeg yuav khoom cov lus qhia.

Cov neeg yuav khoom yuav ntsuas MNS Low-Voltage Switchgear li cas?

Cov Dingsheng khoom siv hluav taws xob qeb suav nrog LV kev faib khoom, hloov chaw nres tsheb thiab cov khoom lag luam prefabricated-substation. Rau qhov project tsawg-voltage, lub MNS low-voltage switchgear los ua ke nplooj ntawv tsim ib tsev neeg modular tub rau khoom npaj rau kev faib hluav taws xob tsawg thiab kev tswj lub cev muaj zog, nrog rau kev teeb tsa xaiv nyob ib ncig ntawm qhov project feeders thiab cov khoom siv.

Nplooj ntawv tsis txhais ib qho kev sib dhos ua tiav. Cov neeg yuav khoom tseem yuav tsum tau muab cov khoom siv hluav taws xob, lub tsheb npav tam sim no, qhov ntsuas qhov tsis raug, tus neeg tau txais txiaj ntsig thiab lub sijhawm pub khoom noj, kev tiv thaiv, ntsuas ntsuas, daim ntawv sib cais, cable nkag, kaw, qhov ntev thiab cov ntaub ntawv. Nws luam tawm siv rau cov tshuab hauv qab 4000 A yog tsev neeg ciam teb, tsis lees paub tias txhua lub txee uas tau hais muaj qhov ntsuas 4000 A.

Yuav Ua Li Cas Nruab Nrab-Voltage Equipment Review?

Dingsheng's XGW-12 nplooj piav qhia txog tsev neeg lub thawv sab nraum zoov hloov chaw siv rau kev txais thiab faib hluav taws xob nruab nrab, suav nrog lub nplhaib-network thiab transformer-feeder daim ntawv thov. Qhov no txhawb kev nkag siab ntawm MV sab.

Rau qhov kev thov MV tiag tiag, lees paub qhov ntsuas hluav taws xob, qib rwb thaiv tsev, ib txwm tam sim no, lub sijhawm luv luv, hloov khoom siv, kev tiv thaiv relay, CT / VT, kev xav tau sab hauv-arc, kev cuam tshuam, kev hloov pauv hauv ntiaj teb, kev txiav cable, cov khoom siv pabcuam, cov ntaub ntawv pov thawj thiab cov ntaub ntawv pov thawj. Tsis txhob hloov qhov kev ntaus nqi los ntawm ib tsev neeg MV mus rau lwm tus.

Cov pov thawj dab tsi yuav tsum txhawb nqa kev pom zoo?

Thov kom tau txais kev pom zoo SLD, kev npaj dav dav, lub sijhawm pub khoom noj, kev ntsuas tsheb npav thiab cov khoom siv, cov npe ntawm cov khoom siv, cov kab kos duab, kev tiv thaiv thiab ntsuas lub sijhawm, cov ntsiab lus cable nkag, kev npaj hauv av thiab kev ua raws matrix. Tus neeg yuav khoom yuav tsum xyuas kom meej tias cov ntaub ntawv tag nrho xa mus rau tib qhov kev hloov kho thiab cov khoom siv.

Txheeb xyuas cov qauv tsim, kev txheeb xyuas niaj hnub, FAT thiab qhov chaw xeem raws li kev tswj xyuas tshwj xeeb. Daim ntawv pov thawj lossis phau ntawv teev npe tsis hloov cov duab kos tshwj xeeb. Deviations yuav tsum nyob twj ywm qhib kom txog thaum lees txais los ntawm lub luag haujlwm engineer.

Dab tsi yog qhov kev xaiv yuam kev ua rau muaj kev pheej hmoo?

1. Xaiv los ntawm lub npe voltage nkaus xwb: txhaum cai thiab kev tiv thaiv tseem tsis tau txhais.
2. Ignoring transformer txoj hauj lwm: MV thiab LV pob ciam teb tsis meej.
3. Siv "switchboard" thiab "switchgear" interchangeably: kev tsim kho thiab kev sim kev cia siab sib txawv.
4. Tshaj tawm los ntawm SLD tsis tiav: feeder suav thiab ratings hloov tom qab engineering pib.
5. Siv tus qauv siv tsis tau lossis tsis tiav: tus neeg muag khoom tus nqi sib txawv xyuas qhov ntsuas.
6. Sib piv cov nqi txee: Cheebtsam, kev tiv thaiv, ntsuas thiab cov ntaub ntawv tsis zoo li qub.

Dab tsi yuav tsum muaj LV / MV Switchgear RFQ suav nrog?

1. SLD thiab kev ua haujlwm lub tswv yim
2. Nominal / siab tshaj voltage thiab zaus
3. Source thiab transformer data
4. Bus thiab feeder ratings
5. Fault Level thiab Duration
6. Earthing system
7. Kev tiv thaiv, ntsuas thiab kev sib txuas lus
8. Incomer, coupler thiab feeder teem caij
9. Cov khoom nyiam
10. Cable nkag thiab txiav tawm
11. Sab hauv / sab nraum zoov ib puag ncig
12. Enclosure, sib cais thiab arc xav tau
13. Cov qauv thiab cov qauv siv tau
14. Drawings, pov thawj thiab FAT
15. Installation/commissioning ciam teb
16. Quantity, lo lus uas peb thiab teem caij

Xa cov ntaub ntawv qhov project los ntawm lub Dingsheng switchgear project thov daim ntawv thiab xav tau Kev Pom Zoo, Deviation, Lwm Txoj Kev lossis Cov Khoom Muag Khoom Xav Tau rau txhua qhov khoom siv.

Cov lus nug nquag

Puas yog nruab nrab-voltage switchgear ib txwm nce ntawm LV switchgear?

Nyob rau hauv ib qho ntawm cov txheej txheem kev nqis tes ua, yog, tab sis qhov project SLD thiab kev siv hluav taws xob sib txuas txhais qhov kev npaj tiag tiag.

MNS txee puas tuaj yeem hloov nruab nrab-voltage switchgear?

Tsis yog. MNS yog tsev neeg uas tsis muaj hluav taws xob sib dhos thiab tsis tuaj yeem hloov cov khoom siv ntawm qhov nruab nrab-voltage network point.

Puas yog lub tsheb npav siab dua tam sim no ua LV switchgear haum rau MV?

Tsis yog. Kev ntsuas tam sim no thiab chav kawm voltage yog cais. Rwb thaiv tsev, hloov, kev tiv thaiv thiab kev xeem yuav tsum txawv.

Cov neeg yuav khoom yuav tsum khov ua ntej?

Cia lub SLD, qhov hluav taws xob, qhov chaw / cov ntaub ntawv hloov pauv, theem kev ua txhaum, av av, kev tiv thaiv lub tswv yim thiab lub sijhawm pub khoom noj ua ntej cov khoom siv zaum kawg.