Dry Type Transformer Installation and Operation Guide

1. Taw qhia

Phau ntawv qhia no muab cov lus qhia dav dav rau kev teeb tsa, kev ua haujlwm, thiab kev saib xyuas ntawm qhuav -hom fais fab transformers. Nws muaj feem xyuam rau tsis yog -excitation qhuav- hom fais fab transformers thiab ntawm -load regulation epoxy resin dry-hom fais fab transformers uas muaj peev xwm mus txog 6300 kVA thiab voltage ntsuas txog 35 kV. Cov lus qhia muaj nyob rau ntawm no suav nrog kev thauj mus los, kev cia khoom, kev teeb tsa, ua ntej- kev pabcuam kev tshuaj xyuas, kuaj, kev ua haujlwm, thiab kev saib xyuas.

Cov qauv siv tau:Qhuav- hom transformers muaj nyob rau hauv phau ntawv qhia no yog tsim thiab tsim raws li cov qauv hauv qab no: GB 6450-86Qhuav- hom Fais Fab TransformersIb., GB 10228-1997Technical Parameters and Requirements for qhuav-hom Fais Fab Transformers, thiab GB 1094.1-1996Fais fab Transformers-Part 1: General. Rau cov ntawv thov thoob ntiaj teb, kev siv kuj tseem tuaj yeem ua rau IEC 726 thiab qhov kawg ntawm GB / T 1094.11-2022 *Power Transformers-Part 11: Dry-type Transformers*.

Qhuav- hom transformers yog qhov tshwj xeeb zoo- haum rau cov ntawv thov uas muaj kev nyab xeeb hluav taws yog qhov kev txhawj xeeb tseem ceeb, suav nrog - cov tsev siab, cov chaw lag luam, cov chaw ua si, cov chaw petrochemical, subway systems, tshav dav hlau, thiab lwm qhov chaw uas muaj kev tiv thaiv hluav taws nruj heev.

 

 

 

 

 

 

 

2.1 Cov Kev Pabcuam Ib txwm muaj

Qhuav- hom transformers yog tsim los rau kev ua haujlwm raws li cov qauv hauv qab no:

Parameter	Txheem tus nqi
Ambient Kub	Hauv qab 40 degree
Qhov siab	Hauv qab 1000 m saum toj no txhais tau tias hiav txwv theem
txheeb ze humidity	Hauv qab 93% (tsis muaj condensation ntawm coil nto)
Qhov chaw nruab	Nyob sab hauv tsev, zoo- tso pa tawm, tsis muaj tshuaj lom neeg thiab corrosive

Thaum ambient kub tshaj 40℃los yog altitudes tshaj 1000 m, transformer ntsuam xyuas yuav tsum tau kho raws li GB 6450 yuav tsum.

 

2.2 Cov chav kawm tiv thaiv

Qhuav- hom transformers muaj nyob rau hauv peb chav kawm tiv thaiv tus qauv:

IP00:Tsis muaj kev tiv thaiv thaiv; haum rau kev teeb tsa hauv cov chav hluav taws xob tshwj xeeb lossis cov rooj sib tham switchgear.

IP20:Muab kev tiv thaiv cov khoom txawv teb chaws loj dua 12 hli inch. Qhov no yog qhov siv ntau tshaj plaws nyob hauv tsev, tiv thaiv kev sib tsoo ntawm qhov chaw nyob thiab tiv thaiv cov tsiaj me (nas, nab, miv, noog, thiab lwm yam) los ntawm kev nkag mus thiab ua rau luv luv.

IP23:Ntxiv nrog rau IP20 tiv thaiv, IP23 enclosures tiv thaiv dej ingress los ntawm cov tee dej poob ntawm lub kaum sab xis mus txog 60℃los ntawm ntsug. Qhov no ua rau lawv tsim nyog rau kev teeb tsa sab nraum zoov lossis ib puag ncig nrog lub teeb dej txau. Txawm li cas los xij, nco ntsoov tias IP23 enclosures txo lub peev xwm ntawm lub tshuab cua txias, yuav tsum tau txiav txim siab txiav txim siab.

 

2.3 Cov txheej txheem txias

Ob txoj kev ua kom txias muaj rau qhuav -hom transformers:

AN (Air Natural):Ntuj convection txias yam tsis tau yuam airflow.

AF (Air Forced):Kev quab yuam cua txias siv cov kiv cua. Thaum ua haujlwm hauv qhov chaw kaw lossis qhov cua tsis zoo, AF fittings yuav tsum tau ntxiv. Qhov yuav tsum tau ntxiv cua ntim yog 4 m³ / min ib 1 kW ntawm tag nrho cov poob (P₀ + Pₖ).

 

 

 

 

 

 

 

 

 

Kev xaiv transformer kom zoo yog qhov tseem ceeb rau kev ntseeg siab thiab lub zog ua haujlwm.

3.1 Txiav txim siab muaj peev xwm

Lub transformer tus nqi peev xwm (kVA) yuav tsum tau txiav txim siab raws li kev suav load ntawm cov khoom sib txuas. Ua ntej, suav cov khoom siv tiag tiag los ntawm kev suav cov khoom siv hluav taws xob thiab siv qhov sib txawv. Lub peev xwm ntsuas yuav tsum tau xaiv kom me ntsis tshaj qhov ntsuas qhov ntsuas no kom haum rau kev loj hlob yav tom ntej.

 

3.2 Qhov tseem ceeb Performance Parameters

Thaum xaiv lub transformer, cov nram qab no tsis yuav tsum tau ua tib zoo soj ntsuam:

Qhov Voltage Ratio:Yuav tsum phim cov khoom siv hluav taws xob thiab qhov kev xav tau ntawm cov khoom siv sib txuas. Piv txwv li, 10 kV muab 0.4 kV loads yuav tsum muaj 10 kV / 0.4 kV transformer.

Tsis muaj -load Poob thiab Load Poob: These parameters directly impact energy efficiency. Lower values indicate better efficiency and reduced operating costs.

Lub zog impedance:Muaj feem cuam tshuam rau kev tswj hwm qhov hluav taws xob thiab luv luv - cov theem tam sim no hauv Circuit Court.

Noise Level:Rau kev teeb tsa hauv suab nrov- qhov chaw muaj suab nrov, qis- qauv suab nrov (feem ntau<55 dB) are preferred.

 

 

 

 

 

 

 

 

4.1 General Transport Requirements

Transformers tej zaum yuav raug xa los ntawm kev tsheb ciav hlau, kev thauj mus los, kev tsav tsheb, lossis kev thauj huab cua. Cov tsheb thauj mus los thiab cov thawv ntim khoom yuav tsum tau ceev kom huv si thiab qhuav.

4.2 Chaw thau khoom thiab ruaj ntseg

Transformers yuav tsum tau ruaj ruaj nyob rau hauv lub tsheb thauj khoom siv trailer, clamps, thiab sib koom hinges.

Tsis txhob khi lossis rub lub coil, insulator, daim hlau, lossis cov hlau lead, vim qhov no yuav ua rau cov khoom puas.

Lub inclination ntawm lub transformer thaum thauj yuav tsum tsis pub tshaj 30 degree.

4.3 stacking thiab cia thaum caij tsheb npav

Tsis txhob tso cov transformers thaum lub sij hawm hloov los yog ntawm cov ntsiab lus davhlau ya nyob twg.

Ntoo crossbeams (crossies) yuav tsum tau muab tso rau hauv qab lub transformer, nrog rau qhov siab tsis tshaj 100 mm.

4.4 Cov ntaub ntawv thiab cov khoom siv nrog

Txhua yam khoom siv, cov khoom seem, thiab ex-cov ntaub ntawv ua haujlwm yuav tsum muab xa ua ke nrog lub tshuab hloov pauv.

 

 

 

 

 

 

 

 

 

 

Thaum tau txais lub transformer, tus neeg muas zaub yuav tsum ua raws li nram no kev lees txais tam sim ntawd:

5.1 Daim Ntawv Pov Thawj

Xyuas kom tseeb tias cov ntaub ntawv tau piav qhia ntawm daim ntawv teev npe (muaj peev xwm ntsuas, ntsuas qhov ntsuas hluav taws xob, kais txoj haujlwm, pawg vector, impedance voltage, thiab lwm yam) ua raws li cov lus qhia tshwj xeeb hauv daim ntawv cog lus yuav khoom.

5.2 Cov ntaub ntawv txheeb xyuas

Xyuas kom tseeb tias tag nrho cov ex-cov ntaub ntawv ua haujlwm (daim ntawv pov thawj ntawm kev ua raws, cov ntawv xeem, cov ntawv ntim khoom, cov duab kos duab dav dav, thiab lwm yam) ua tiav thiab ua raws li cov lus cog tseg.

5.3 Accessories thiab Cheebtsam

Tshawb xyuas tag nrho cov khoom uas tau muab tshem tawm thiab cov khoom siv tiv thaiv daim ntawv teev npe kom paub meej tias tsis muaj kev puas tsuaj lossis cov khoom ploj lawm.

5.4 Kev tshuaj xyuas lub cev

Tshawb xyuas lub transformer thiab nws cov khoom kom pom kev puas tsuaj lossis hloov chaw.

Tshawb xyuas cov kab txuas rau xoob lossis tawg.

Tshawb xyuas cov insulators rau cov kab nrib pleb lossis lwm yam kev puas tsuaj.

Tshem cov ntoo hlais yog tias muaj.

5.5 Cia tom qab kuaj xyuas

Yog tias lub tshuab hloov pauv tsis raug muab tso rau hauv kev pabcuam tam sim tom qab kuaj xyuas, nws yuav tsum tau rov ntim dua thiab khaws cia kom tsim nyog.

 

 

 

 

 

 

 

 

6.1 Kev Cia Siab

Cov khoom thiab cov khoom siv uas yuav tsum tau khaws cia yuav tsum tsis txhob qhib lawv cov rooj plaub tshwj tsis yog kev tshuaj xyuas thiab kev lees paub. Tom qab kuaj xyuas, rov ntim dua tam sim.

Rau lub sijhawm ntev - khaws cia, tso cov tshuab hloov pauv thiab cov khoom siv rau hauv qhov chaw qhuav, huv, thiab zoo- chav cua.

Tsis txhob khaws cov tshuaj los yog cov tshuaj corrosive hauv tib chav.

Tsis txhob ntim cov khoom.

6.2 Sab hauv vs. Sab nraum zoov Cia

Qhuav- hom transformers yuav tsum muab cia rau hauv tsev. Yog tias luv luv - lub sij hawm cia sab nraum zoov tsis tuaj yeem zam tau vim qhov chaw txwv:

Tsis txhob qhib lub casing.

Tshawb xyuas thiab tuav lub hau rau kev tiv thaiv dej.

Muab crossbeams hauv qab lub transformer (qhov siab Tsawg dua los yog sib npaug li 100 mm).

6.3 Cia Lub Sijhawm txwv

Kev cia sab nraum zoov yuav tsum tsis pub tshaj ob lub hlis. ambient kub thaum lub sij hawm cia sab nraum zoov yuav tsum tsis txhob poob qis dua -10 degree.

 

 

 

 

 

 

 

 

 

7.1 Ua ntej-Kev Npaj Txhim Kho

Ua ntej pib installation:

Kawm cov kev qhia tshwj xeeb ntawm kev teeb tsa, cov ntaub ntawv npe, thiab cov duab kos duab dav dav kom zoo zoo.

Npaj cov khoom nqa tsim nyog (cranes, forklifts, tsheb cranes) thiab rigging.

7.2 Lifting thiab tuav

Cov txheej txheem nqa kom zoo yog qhov tseem ceeb los tiv thaiv cov khoom puas tsuaj:

Kev nqa yuav tsum tau ua los ntawm kev nqa txhua lub nplhaib ntawm lub tshuab hluav taws xob ib txhij -tsis txhob nqa los ntawm ib leeg ib leeg.

Thaum nqa lub tshuab hloov pauv tsis tau ntim lossis tshem tawm ntawm nws lub pob, lub kaum sab xis nqa yuav tsum tsis pub tshaj 60 degree.

Rau cov transformers xa nrog rau ntawm -load tap changers (OLTC) txuas, nqa siv lub transformer nqa lub nplhaib nkaus xwb-tsis txhob nqa los ntawm OLTC.

Thaum qhov nruab nrab ntawm lub ntiajteb txawj nqus yog offset, kho qhov ntev ntawm nqa cov xov hlau raws li kom muaj kev sib npaug.

Ua tib zoo saib xyuas txhua qhov txheej txheem sib dhos.

7.3 Qhov Chaw Layout thiab Clearances

Qhov yuav tsum tau Clearance	Yam tsawg kawg nkaus
Transformer rau phab ntsa lossis barrier	Ntau tshaj lossis sib npaug li 500 mm
Nruab nrab ntawm cov transformers uas nyob ib sab	Ntau tshaj lossis sib npaug li 500 mm
Transformer siab- voltage sab rau phab ntsa	Ntau dua lossis sib npaug li 800 mm (pom zoo)
Transformer qis-voltage sab rau phab ntsa	Ntau dua lossis sib npaug li 600 mm (pom zoo)
Kev khiav haujlwm aisle dav	Ntau tshaj lossis sib npaug li 1200 mm
Transformer rau laj kab / guardrail	Ntau tshaj lossis sib npaug li 600 mm
Nruab nrab ntawm ob transformers (tsim qauv)	Ntau dua lossis sib npaug li 1.0 m

7.4 Yam tsawg kawg ntawm kev nyab xeeb (High-Voltage Chev rau hauv av)

Qhov kev nyab xeeb yam tsawg kawg nkaus ntawm cov khoom siv hluav taws xob thiab hauv av yuav tsum ua raws li GB 10237Rwb thaiv tsev Level thiab Insulating Test-External Insulation Air Clearance:

HV Rating	Tsawg dua lossis sib npaug li 1 kV	6kv ua	10 kV	15 kv	20kv ua	3 5kv
Net Clearance (mm)	40	60	90	120	160	250

Rau 12 kV systems, qhov kev ncua deb ntawm huab cua yuav tsum siab dua los yog sib npaug li 125 hli; rau 40.5 kV systems, Ntau dua lossis sib npaug li 360 mm. Qhov kev ncua deb yuav tsum siab dua lossis sib npaug li 18 mm / kV rau cov khoom siv hluav taws xob porcelain thiab ntau dua lossis sib npaug li 20 mm / kV rau cov organic rwb thaiv tsev.

7.5 Foundation thiab Mounting

Transformer foundations yuav tsum muaj embedded thauj tog rau nkoj bolts nyob rau hauv raws li cov qauv qhia dav dav kom haum nrog lub transformer lub mounting qhov.

Lub hauv paus pob zeb yuav tsum muaj lub peev xwm loj dua lossis sib npaug li 1.5 npaug ntawm qhov hnyav ntawm qhov hloov pauv, nrog cov kab rov tav theem sib txawv tsawg dua lossis sib npaug li 2 hli / m.

Rau seismic lossis kev vibration- kev teeb tsa rhiab heev, roj hmab vibration- damping pads (thickness Ntau dua lossis sib npaug li 10 mm) yuav tsum tau nruab rau ntawm tag nrho plaub fab.

Rau transformers nruab nrog idler log, lub log yuav tig tau 90℃nyob rau hauv txoj kev tig. Tom qab muab tso rau, lub log yuav tsum tau muab tshem tawm los yog xauv rau hauv qhov chaw, thiab lub transformer tsau ntawm thauj tog rau nkoj bolts.

Lub trailer (lub hauv paus thauj khoom) yuav tsum tau dismantled tom qab tso.

7.6 Cable thiab Busbar Connections

Cov xaim hluav taws xob los yog cov tsheb thauj mus los yuav tsum tau txais kev txhawb nqa zoo thiab clamped kom tsis txhob muaj kev ntxhov siab ntawm cov khoom siv hluav taws xob.

Copper busbar pob qij txha yuav tsum tau polished thiab coated nrog conductive roj ua ntej kev twb kev txuas.

Torque xav tau rau fasteners:

Bolt Loj	M10	M12	M16	M20
Torque (Nm)	30	33	35	45

7.7 Kev sib tw

Kev cog av kom zoo yog qhov tseem ceeb rau kev nyab xeeb:

Transformer enclosure, core, thiab nruab nrab taw tes yuav tsum yog ntawm nws tus kheej hauv av.

Grounding conductors yuav tsum siv tooj liab cable nrog cross-sectional cheeb tsam Loj dua los yog sib npaug li 50 mm².

Grounding kuj yuav tsum tsawg dua los yog sib npaug rau 4Ω.

 

 

 

 

 

 

 

 

 

 

Ua ntej muab lub tshuab hluav taws xob tso rau hauv kev pabcuam, kev tshuaj xyuas hauv qab no yuav tsum tau ua:

8.1 Mechanical Inspection

Xyuas tag nrho cov fasteners thiab connectors; rov- nruj raws li qhov tsim nyog.

Xyuas kom tseeb tias tag nrho cov khoom tau nruab thiab ruaj ntseg zoo.

Tshem tawm cov ntaub ntawv txawv teb chaws lossis cov plua plav uas muaj (saib Tshooj 11.2 rau cov txheej txheem ntxuav).

8.2 Cov Cuab Yeej Cuab Yeej Cuab Yeej thiab Kev Ntsuas Kub Kub

Xyuas cov kiv cua kom paub meej tias kev ua haujlwm zoo li qub.

Kev ntsuam xyuas tseem ceeb:Txheeb xyuas qhov kev sib hloov ntawm peb -theem transformer kiv cua. Lub airflow yuav tsum los ntawm hauv qab lub kauj. Yog tias qhov kev taw qhia tsis raug, hloov cov theem ua ntu zus raws li cov lus qhia tshwj xeeb.

Txheeb xyuas qhov ntsuas kub thiab ntsuas qhov ntsuas kub kom ua haujlwm zoo.

Xyuas kom muaj av zoo ntawm cov tswj kub thiab cov khoom siv ntxiv raws li lawv cov kev qhia tshwj xeeb.

Xyuas kom tseeb tias cov ntsuas kub tswj tau raug muab tso rau hauv qhov ntsuas qhov ntsuas kub ntawm qhov ntsuas cua (qhov tob tob tshaj lossis sib npaug li 80 mm).

8.3 Default Temperature Controller Parameters

Cov yam ntxwv tsis zoo rau qhuav- hom transformer kub tswj yog:

Qhov kub thiab txias	Kev ua
Tsawg dua los yog sib npaug li 80 degree	Cov kiv cua nres
Ntau dua lossis sib npaug li 100 degree	Kiv cua pib pib
Ntau tshaj lossis sib npaug li 130 degree	Tshaj - tswb ntsuas kub
Ntau tshaj lossis sib npaug li 150 degree	Tshaj -kub mus ncig

 

 

 

 

 

 

 

 

 

Cov kev ntsuam xyuas hauv qab no yuav tsum tau ua ua ntej lub transformer muab tso rau hauv kev pab:

9.1 DC Resistance ntsuas

Ntsuas DC tsis kam ntawm windings ntawm txhua txoj haujlwm kais dej kom paub tseeb kev sib cuag thiab txheeb xyuas cov kev sib txuas xoob.

9.2 Voltage Ratio thiab Vector Group Test

Ntsuas qhov voltage piv ntawm tag nrho cov kais dej thiab xyuas cov vector pawg tsim.

9.3 Kev txheeb xyuas qhov tseeb

Txheeb xyuas tias lub cev transformer thiab cov tub ntxhais tseem nyob ruaj khov.

9.4 Insulation Resistance Ntsuas (Windings)

Kuaj	Kev xav tau	Megohmmeter
HV-LV & HV-Earth	Ntau dua lossis sib npaug li 300 MΩ	2500 V
LV – Ntiaj teb no	Ntau dua lossis sib npaug li 100 MΩ	2500 V

Cov xwm txheej xeem:Kub 20-30 degree, txheeb ze humidity Tsawg dua los yog sib npaug li 90%

Rwb thaiv tsev qhov tseem ceeb yuav txo qis hauv cov av noo. Nyob rau hauv dampness, tus nqi kuj yuav tsum tsis pub tsawg tshaj 2 MΩ ib 1000 V ntawm rated voltage (nyeem tau ntawm 25℃rau ib feeb). Rau cov transformers uas tau dhau los ua damp lossis pom cov cim ntawm condensation / Frost, kev kho kom qhuav yuav tsum tau ua ua ntej kev pabcuam thiab tiv thaiv qhov ntsuas hluav taws xob, tsis hais qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas.

9.5 Core Insulation Resistance Test

Tshem tawm cov core grounding phaj ua ntej kuaj.

Kuaj	Kev xav tau	Megohmmeter
Core-Clamps & Ntiaj Teb	Ntau dua lossis sib npaug li 2 MΩ	500 V
Piercing Screw-Coil & LV	Ntau dua lossis sib npaug li 100 MΩ	500 V

Cov xwm txheej xeem:Kub 20-30 degree, txheeb ze humidity Tsawg dua los yog sib npaug li 90%

Nyob rau hauv cov huab cua ntub, ntsuas qhov ntsuas yuav txo qis. Tom qab kev kho kom qhuav, tus nqi kuj yuav tsum siab dua lossis sib npaug rau 0.1 MΩ ua ntej muab lub tshuab hloov pauv rau hauv kev pabcuam.

9.6 Ntawm -Load Tap Changer (OLTC) Kev Tshuaj Xyuas

Rau transformers nruab nrog OLTC, tshuaj xyuas thiab kuaj raws li OLTC cov chaw tsim khoom cov lus qhia ua ntej ua haujlwm.

9.7 Fais Fab Zaus Nrog Kev Ntsuas Voltage

Siv lub zog zaus tiv taus qhov hluav taws xob ntawm 85% ntawm lub Hoobkas ntsuas hluav taws xob.

9.8 Cov ntsiab lus xeem Kev lees txais

Tom qab ua tiav ntawm txhua qhov kev xeem, cov ntaub ntawv lees paub hauv qab no yuav tsum tau npaj: cov ntaub ntawv xeem (xws li cov txiaj ntsig ntawm kev tso tawm ib nrab, Tsawg dua lossis sib npaug li 10 pC), cov ntaub ntawv teeb tsa, thiab cov ntaub ntawv ntsuas kub ntawm cov khoom siv.

 

 

 

 

 

 

 

 

 

10.1 Kais txoj hauj lwm hloov kho (Tsis yog-Excitation)

Rau transformers nrog off{0}}circuit kais changers (piv txwv li, qhov ntsuas voltage 10,000 V ± 2 × 2.5%):

Coj mus rhaub qhov chaw	Cov zis hluav taws xob
2–3	10,500 V
3–4	10,250 V
4–5	10,000 V
5–6	9,750 V
6–7	9,500 V

Yog tias lub zog hluav taws xob hauv cheeb tsam yog 10 kV, txuas cov kais dej ntawm txoj hauj lwm 4-5.

Yog tias cov khoom siv hluav taws xob ntau tshaj 10,500 V, kho mus rau qhov siab dua kais dej tom qab disconnecting high voltage.

Yog tias cov khoom siv hluav taws xob qis dua 9,500 V, hloov mus rau qhov chaw qis qis tom qab disconnecting high voltage.

Txhua qhov kev hloov kho kais yuav tsum tau ua nrog lub siab voltage disconnected.

10.2 OLTC Kev Ua Haujlwm

Rau cov transformers nrog rau ntawm -load kais hloov pauv, xa mus rau OLTC tshwj xeeb. Lub transformer tuaj yeem muab tso rau hauv kev pabcuam tsuas yog tom qab OLTC raug kho kom raug. Tshem tawm lub hwj chim ua ntej ua kev hloov kho.

10.3 Temperature Controller thiab Zaub

Rau transformers nruab nrog kub controllers thiab kub qhia:

Ua ntej energize lub transformer, ces hwj chim ntawm qhov kub thiab txias controller thiab tso saib.

Configure cov cuab yeej raws li qhov sib thooj kub tswj specifications.

10.4 Pib Lub Zog

Ua tsis muaj -load tripping- kaw haujlwm. Qhov siab tshaj plaws tripping-kaw inrush tam sim no ncov yuav ncav cuag 8–10 npaug ntawm qhov ntsuas tam sim no- qhov no yog qhov qub.

Maj mam nce load los ntawm me me mus rau loj thaum saib xyuas cov suab txawv txav.

10.5 Tsis muaj-Load Operation

Tsis muaj- kev ua haujlwm thauj khoom yuav tsum ua raws li IEC 905Kev cai rau qhuav-Hom Fais Fab Transformers. Luv- lub sijhawm ua haujlwm tshaj tawm tau tso cai raws li qhov ntsuas kub thiab qhov pib thauj khoom.

10.6 Kev Muaj Peev Xwm Tshaj Tawm

Thaum ambient kub qis dua tus nqi ntsuas, cov zis hluav taws xob tuaj yeem ua tau zoo dua li qhov ntsuas qhov ntsuas, thiab rov ua dua.

Lub peev xwm overload ntawm qhuav- hom transformers nyob ntawm qhov kub thiab txias, ua ntej -load tej yam kev mob, rwb thaiv tsev kub dissipation yam ntxwv, thiab thermal lub sij hawm tas li. Overload curves yuav tsum tau txais los ntawm cov chaw tsim khoom rau cov ntawv thov tshwj xeeb.

10.7 Cov Kev Ua Haujlwm Tshwj Xeeb

Qhuav- hom transformers tuaj yeem muab tso rau hauv kev pabcuam tam sim tom qab pib lub zog yam tsis muaj kev kho tshwj xeeb.

Txawm li cas los xij, yog tias lub tshuab hloov pauv tau ua haujlwm hauv huab cua ntub lossis pom cov cim ntawm condensation / Frost, kev kho kom qhuav yuav tsum tau ua ua ntej ua haujlwm tom ntej.

10.8 Cov txheej txheem ua kom muaj zog ua ntej

Ua tsis tau -load energization peb zaug, nrog rau 5-feeb lub sij hawm ntawm txhua qhov kev ua haujlwm, thiab saib xyuas cov dej ntws tam sim no.

Ua haujlwm nrog kev thauj khoom tsawg dua lossis sib npaug li 30% rau 24 teev los xyuas qhov ua tau zoo.

Winding kub nce yuav tsum tsis pub tshaj 100 K rau Class F rwb thaiv tsev.

 

 

 

 

 

 

 

 

11.1 Kev soj ntsuam zaus

Ib puag ncig	Kev soj ntsuam zaus
Ntxuav, qhuav ib puag ncig	Ib xyoos ib zaug
Ib puag ncig polluted	Txhua 3-6 lub hlis

Cov hloov pauv tshiab tshiab yuav tsum tau txais lawv thawj qhov kev tshuaj xyuas tom qab 2-3 lub hlis ntawm kev ua haujlwm, ua raws li kev tshuaj xyuas txhua xyoo tom qab ntawd. Kev kho dua tshiab tau pom zoo txhua 3-5 xyoos, lossis raws li qhia los ntawm cov chaw tsim khoom raws li cov khoom siv.

11.2 Kev ntxuav

Tshawb xyuas thiab ntxuav cov plua plav pov tseg kom ntseeg tau tias qhov cua kom zoo thiab tiv thaiv kev puas tsuaj ntawm cov khoom siv hluav taws xob.

Them tshwj xeeb rau cov insulators thiab qis padding blocks.

Siv compressed cua qhuav los tshuab tawm cov kav dej thiab cov kav dej txias (compressed cua siab tsawg dua lossis sib npaug li 0.2 MPa).

11.3 Kev tshuaj xyuas qhov muag

Txheeb xyuas cov khoom hauv qab no thaum txhua qhov kev tshuaj xyuas:

Fasteners, connectors, thiab conductor qhov chaw rau xeb los yog corrosion.

Insulating nto rau creepage cim thiab carbonization.

Txhawb cov insulators rau cov kab nrib pleb los yog paug tawm.

Cov kiv cua txias rau kev ua haujlwm ib txwm muaj.

High thiab low voltage sib txuas rau overheating paib.

Core thiab winding rau discoloration, tsw, los yog lwm yam txawv txav.

11.4 Kev Ntsuas Hluav Taws Xob Hluav Taws Xob

Thaum lub sij hawm teem tseg txij nkawm (kwv yees txhua tsib xyoos), ntsuas kev tiv thaiv rwb thaiv tsev raws li Tshooj 9.4 thiab 9.5 los txiav txim seb cov khoom puas tuaj yeem ua haujlwm ntxiv. Kev ntsuas kev tiv thaiv kev tiv thaiv kev tiv thaiv ib txwm tau pom zoo txhua 6-12 lub hlis.

 

 

 

 

 

 

 

 

Qhuav hom transformers feem ntau yog siv nyob rau hauv tsev thiab nyob rau hauv cov huab cua-rhiab heev. Rau kev siv sab nraum zoov, roj-sau, los yog ncej-mounted, thov mus saib cov nram qab no ntxiv kev teeb tsa thiab cov lus qhia ua haujlwm.

• Substation Transformer Installation and Operation Guide
• Fais fab Transformer Installation and Operation Guide
• Ncej Mounted Transformer Txhim Kho thiab Ua Haujlwm Qhia
• Pad Mounted Transformer Installation thiab Kev Qhia Ua Haujlwm
• Compact Substation Installation thiab Kev Qhia Ua Haujlwm

 

 

 

 

 

 

 

 

 

12.1 Kev Tiv Thaiv thiab Tiv Thaiv

Transformers ua haujlwm yam tsis muaj qhov thaiv yuav tsum tau nruab nrog lub laj kab tiv thaiv lossis tus neeg saib xyuas kom tsis txhob muaj xwm txheej tsis zoo.

Rau sab nraum zoov lossis ib nrab- kev teeb tsa sab nraum zoov, qhov ruaj khov ntawm qhov siab tsawg kawg yog 1.5 m nyob rau hauv qhov siab yuav tsum tau muab nyob ib ncig ntawm lub transformer, nrog rau qhov tsawg kawg nkaus clearance ntawm 0.5 m ntawm lub transformer qauv thiab lub guardrail.

12.2 Kev txwv tsis pub ua

Tsis muaj leej twg yuav kov lub transformer thaum nws energized.Txhua txoj haujlwm hluav taws xob yuav tsum tau ua nrog lub tshuab hluav taws xob kom zoo de-energized, kaw, thiab tagged tawm.

12.3 Cov Neeg Ua Haujlwm Tsim Nyog

Txhua qhov kev ntsuam xyuas, kev ntsuas hluav taws xob, thiab kev saib xyuas kev ua haujlwm ntawm lub tshuab hluav taws xob yuav tsum tau ua los ntawm cov kws tshaj lij hluav taws xob uas tau kawm thiab tsim nyog.

12.4 Kev Npaj Npaj Ua Ntej

Ib txoj kev npaj teb xwm txheej ceev, suav nrog cov txheej txheem pab thawj zaug rau hluav taws xob poob siab, yuav tsum tau tsim thiab cov neeg ua haujlwm raug cob qhia raws li.