5 MVA Traction Transformers-132/1.22 KV|South Africa 2025

01 General

1.1 Project Description

5000 kVA traction transformer tau xa mus rau South Africa hauv 2025. Lub zog ntsuas ntawm lub transformer yog 5000 kVA nrog ONAN txias. Lub siab voltage yog 132 kV nrog ± 2 * 2.5% tapping ntau yam (NLTC), qhov tsawg voltage yog 2 * 1.22+0.635 kV, lawv tsim ib pawg vector ntawm Y / d ± 15℃d11.

Tailor-ua rau cov kev ua haujlwm hnyav hauv South Africa, 5MVA traction transformer ua lub luag haujlwm tseem ceeb rau kev tsheb ciav hlau thauj mus los traction fais fab mov, kev sib koom ua ke cov kev teeb tsa tsis raug thiab kev hloov pauv ib puag ncig zoo nrog siab - tsim kev ntseeg tau thiab cov kev daws teeb meem kho kom haum rau qhov nyuaj ntawm - qhov chaw ua haujlwm.

Hais txog cov ntsiab lus tseem ceeb, lub tshuab hloov pauv muaj peev xwm ntsuas ntawm 5000kVA, thawj qhov hluav taws xob ntawm 132kV, thiab ib sab thib ob siv 2 × 1.22kV dual delta- txuas windings (tuaj yeem nrog kaum ob-mem tes rectifiers, muab rau {{6}1.22kV dual delta), tertiary winding (nruab nrab nrog cov bushings ywj siab los muab lub zog rau lub auxiliary transformer). Ua haujlwm ntawm 50Hz, nws siv siab -copper conductivity rau windings kom ntseeg tau tias kev sib kis tau zoo thiab ruaj khov. Cov pab pawg sib txuas yog tsim los ua Ydd ± 15 degree, nrog rau 15℃theem hloov ntawm ob theem qis-voltage windings, uas ua kom zoo dua lub zog zoo ntawm lub zog traction thaum txo qis kev cuam tshuam ntawm kev cuam tshuam los ntawm kev tsim tshwj xeeb.

Lub hom phiaj hnyav ntawm -qhov chaw nyob hauv South Africa- suav nrog cov pa phem hnyav, kev hloov pauv hluav taws xob (± 5% nyob rau hauv ib txwm muaj, -15% nyob rau hauv qhov xwm txheej tshwj xeeb), qhov kub ntawm qhov dav (-10℃txog +55}℃), qhov siab siab (0{{13}%), nruab nrab ntawm 10-10%. Cov khoom lag luam muaj cov qauv ua kom muaj cua sov, cov roj tank ua los ntawm ntau dua lossis sib npaug ntawm 6 hli tuab steel phaj (16 hli tuab phaj), kub-dip galvanized los tiv thaiv corrosion radiators, ua ke nrog lub conservator nrog zais zis thiab ua pa, ua kom muaj zog noo noo, tiv thaiv corrosion, thiab rwb thaiv tsev. Nws tuaj yeem tiv taus xob laim ntawm HV / LV1 / LV 2 550 / 60kV thiab muaj lub zog siv hluav taws xob txaus los tiv thaiv qhov cuam tshuam ntawm qhov txhaum tam sim no, ua kom ruaj khov ua haujlwm nyob rau hauv huab cua txias.

Nyob rau hauv cov nqe lus ntawm kev ua tau zoo, lub transformer txais ONAN (Oil Natural Air Natural) txias. Cov cua kub kub nce siab tsis tshaj 65℃nyob rau hauv tas li tag nrho - thauj khoom tom qab ncav cuag thermal sib npaug thiab qhov kub thiab txias. Nws tuaj yeem yooj yim tiv nrog luv luv - lub sij hawm overload cov kev sib tw: qhov kub nce yog tswj nyob rau hauv 70℃-100℃nyob rau hauv kev khiav hauj lwm tej yam kev mob ntawm 3x load rau 1 feeb, 3.5x load rau 10 vib nas this, thiab 2x load rau 30 feeb, nrog tsis siv neeg tripping tiv thaiv ntawm 4.25x load, sib npaug kev ua hauj lwm kev ruaj ntseg. Cov khoom siv tseem ceeb suav nrog NLTC tawm - Circuit Court kais hloov pauv (± 2 × 2.5% kev hloov kho nrog padlockable muaj nuj nqi), ib qho -float gas relay (nrog lub tswb thiab cov neeg mus ncig), qhov ntsuas kub ntawm qhov ntsuas kub nrog qhov kub thiab txias (teeb mus rau kev mus ncig ntawm 115 degree), thiab lub thawv ntawv nrog IP55 tiv thaiv. Tsis tas li ntawd, lub bushing qhov siab yog optimized kom haum rau ntawm -site 2.7m high-voltage busbar installation yuav tsum, nrog rau kev soj ntsuam qhov rais / manhole nyob rau sab saum toj rau kev saib xyuas yooj yim, thiab cov roj lim txuas cov kav dej khaws cia rau sab ntawm lub tank roj, kev txhim kho kev ua haujlwm thiab kev saib xyuas yooj yim.

Los ntawm cov qauv winding tsim (nruam disc- hom rau high voltage, kauv- hom rau qhov tsis tshua muaj hluav taws xob) rau cov khoom xaiv thiab thauj khoom -cov kabmob muaj peev xwm, lub tshuab hluav taws xob traction no tau kho kom haum rau qhov tshwj xeeb ntawm cov khoom siv hluav taws xob. Nws tsis tsuas yog ua tau raws li qhov yuav tsum tau ua ntawm kaum ob -mem tes rectifiers tab sis kuj muab kev lees paub ywj pheej rau kev pabcuam lub zog los ntawm kev sib tw tertiary winding, ua rau nws yog qhov zoo tshaj plaws traction fais fab mov tov nrog tiv thaiv - cuam tshuam, hnyav ib puag ncig tiv thaiv, thiab kev nyab xeeb siab rov qab rau South Africa qhov project.

1.2 Technical Specification

5000 kVA traction transformer specifications hom thiab cov ntaub ntawv ntawv

1.3 Cov duab kos

5000 kVA traction transformer daim duab kos duab thiab loj.

02 Kev tsim khoom

2.1 Core

Lub hauv paus ntawm lub traction transformers yog tsim los ntawm laminated, siab -permeability, tsawg- cov ntaub ntawv poob-txias- dov nplej- taw qhia silicon steel. Tsim los ua kom muaj zog thiab compact, nws tiv taus cov kev cuam tshuam tsis tu ncua thiab kev vibrations txhua yam muaj nyob rau hauv kev khiav tsheb ciav hlau. Cov laminations feem ntau sib sau ua ke nrog tag nrho lapped thiab staggered pob qij txha kom txo tau qhov sib nqus tsis kam thiab tsis muaj -load poob. Kev ntsuas clamping thiab damping zoo yog ib qho tseem ceeb rau nws cov qauv tsim, ua kom muaj kev ruaj khov thiab muaj txiaj ntsig zoo sib nqus rau kev hloov pauv hloov hluav taws xob txhim khu kev qha thiab lub zog hloov pauv raws li qhov xav tau.

2.2 Cua txias

Lub nruam winding ntawm ib tug traction transformers feem ntau yog ua los ntawm tooj liab enameled ca hlau los yog tsis tu ncua transposed conductor (CTC). Nws raug mob nyob rau hauv ib tug nruam disc zoo yam tsis muaj inter- disc pob qij txha, featuring tsis tshua muaj AC poob thiab uniform kub dissipation; los ntawm kev ua kom zoo rwb thaiv tsev tsim los tswj qhov kev ntxhov siab, nws tuaj yeem ua tau raws li qhov xav tau ntawm lub zog ua haujlwm raws li kev ua haujlwm zoo li 3.5 zaug dhau. Cov qauv no feem ntau yog siv rau siab -voltage windings, uas tuaj yeem hloov mus rau 12-pulse rectifiers, muab txoj hauv kev ruaj khov magnetoelectric rau kev hloov hluav taws xob zoo hauv cov tshuab traction thaum ua raws li cov txheej txheem rwb thaiv tsev kom muaj kev nyab xeeb ntawm kev ua haujlwm.

2.3 Tank

Lub tank yog ua los ntawm steel daim hlau nrog lub thickness ntawm ntau tshaj los yog sib npaug zos rau 6 hli (lub hauv paus phaj thickness yog 16 hli), thiab nws sab saum toj npog yog txuas nrog bolts. Sab nrauv yog pleev xim rau grey nrog cov xim tuab ntawm tsis pub tsawg tshaj 125 microns. Sab hauv ntawm lub tank yog ntim nrog roj transformer, uas muab rwb thaiv tsev thiab cua sov dissipation rau cov tub ntxhais hlau thiab windings. Nws koom tes nrog detachable kub-dip galvanized radiators nrog cov xim kom ua kom txias, thiab txuas nrog lub zais zis roj conservator nyob rau tib lub sij hawm kom ntseeg tau tias lub transformer lub cev yog ib txwm raus rau hauv cov roj. Lub tank loj yog nruab nrog ib lub yeeb nkab nrog lub faucet (nrog 50mm xov xov) ntawm ob sab ntawm cov roj conservator thiab sab nraud, uas yog siv rau kev sib txuas cov roj lim thiab tsim nyog rau kev ua haujlwm hauv av-ib lub yeeb nkab yog teem rau ntawm qhov chaw siab, thiab lwm qhov ntawm qhov qis (qhov qis- txoj hauj lwm ib qho tuaj yeem ua ke nrog cov roj ntws valve yog tias tsim nyog). Lub tank tseem tau nruab nrog cov cuab yeej tiv thaiv xws li lub siab nyem valve, thiab yuav tsum tau sib haum nrog cov bushings uas nyob tsis pub tshaj 2.7m saum av, thiaj li ua tau raws li qhov yuav tsum tau ua nyob rau hauv cov cheeb tsam uas muaj kuab paug hnyav thiab xob laim hnyav hauv South Africa, nrog rau hauv qab 3.5x load condition.

03 Accessories

3.1 Kub dip galvanized radiator

Qhov no detachable radiator nta ib tug kub-dip galvanized puag nrog ib tug ntxiv xim txheej, yog sib xws nrog traction transformer's ONAN cua txias system los pab nyob rau hauv tshav kub dissipation, thiab yog tsim los hloov mus rau South Africa lub hnyav ua hauj lwm tej yam kev mob (hnyav muaj kuab paug, kub ntau yam ntawm -}10 ~ 5{{2}℃. lub sij hawm ntev corrosion kuj thiab cov qauv stability.

3.2 Winding Temperature Indicator

Qhov ntsuas kub ntawm qhov ntsuas cua (xws li kev siv hluav taws xob overload thermal relay) yog tsim los tiv thaiv lub traction transformer los ntawm overload, featuring ib tug load - kub (kwv yees lub winding qhov kub tshaj qhov chaw kub) correlation thiab ambient kub them nyiaj ua haujlwm; nws yog nruab nrog ib tug mus txawv tebchaws kev sib cuag teeb tsa ntawm 115℃(raws li 45℃ambient kub + 70℃siab tshaj kub nce) thiab muaj hluav taws xob tsis muaj 110V DC thiab 6A, uas yog adaptable mus rau lub transformer lub hnyav ua hauj lwm tej yam kev mob xws li 3.5x load los xyuas kom meej kev ruaj ntseg.

3.3 Terminal Thawv

Lub thawv davhlau ya nyob twg ntawm qhov hloov pauv hloov pauv no muaj qhov ntsuas IP55 tiv thaiv, tiv thaiv cov plua plav nkag thiab qis - cov dej ntws tawm, thiab tau tsim kho kom haum rau hnyav ntawm - thaj chaw nyob hauv South Africa (xws li hnyav hnyav, qhov kub thiab txias ntawm -10 ~ +55℃, thiab 10% humidity). Nws ua haujlwm los tiv thaiv kev sib txuas hluav taws xob sab hauv, ua kom ntseeg tau cov kab hluav taws xob thiab cov teeb liab kis tau tus mob rau lub tshuab hluav taws xob txawm tias nyob rau hauv kev ua haujlwm hnyav xws li 3.5x load, yog li tiv thaiv cov cuab yeej ua haujlwm ruaj khov.

04 Kev Xeem

Qhov no 5000kVA 132/2 ×1.22+0.635kV traction transformers tau ua tiav cov kev sim niaj hnub ua raws li cov qauv siv hluav taws xob cuam tshuam, suav nrog 24-teev kev ntsuas nruj nruj ntawm 30kpa yam tsis muaj qhov xau, kev ntsuas roj hluav taws xob (cov roj yaj thiab cov dej noo kom pom), rwb thaiv tsev tiv thaiv, qhov ntsuas hluav taws xob tsis zoo, qhov ntsuas hluav taws xob thiab qhov ntsuas hluav taws xob. Kev txheeb xyuas qhov hloov pauv theem, winding tsis kam, luv -circuit impedance, tsis muaj- load thiab load poob kev sim, piv thiab polarity check ntawm built-in tam sim no transformers, thov voltage test, induced voltage withstand test nrog ib nrab paug (PD) ntsuas, thiab auxiliary thaiv rwb thaiv tsev kuaj. Tag nrho cov kev xeem tau ua raws li cov kev cai, thiab lub transformer thaum kawg suav tias tsim nyog, muaj peev xwm ua tau raws li nws cov kev xav tau ntawm kev ua haujlwm.

05 Packing thiab Shipping

06 Site thiab Summary

Qhov no 5000kVA 132/2 × 1.22+0.635kV traction transformer yog tsim thiab tsim nyob rau hauv nruj raws li cov qauv fais fab transformer. Nws tau yoog raws qhov hnyav ntawm -qhov chaw nyob hauv South Africa, suav nrog kev ua qias tuaj hnyav, xob laim hnyav, thiab qhov kub ntawm -10 ~ +55 degree, khav theeb cov yam ntxwv xws li 3.5x load withstand peev, tag nrho cov rwb thaiv tsev, thiab lub zog txhua yam. Kev tsim ntawm cov khoom tseem ceeb thiab cov qauv ua tau raws li cov kev xav tau ntawm kev ua haujlwm. Txheeb xyuas los ntawm cov kev ntsuam xyuas niaj hnub, txhua qhov ntsuas suav nrog kev sib khi ua haujlwm, qib rwb thaiv tsev, qhov ntsuas qhov ntsuas qhov tseeb, thiab kev tswj tsis tau ua raws li cov kev qhia tshwj xeeb, thiab lub tshuab hloov pauv thaum kawg suav tias tsim nyog. Muaj peev xwm hloov kho mus rau 12-pulse rectifier units, qhov hloov pauv no muab kev txhawb zog thiab kev nyab xeeb hloov pauv rau lub zog traction, ua kom txaus siab rau kev ntseeg siab thiab ua haujlwm ntev ntawm kev ua haujlwm ntawm qhov chaw.