50 kVA transformer utility ncej-13.8/0.24*0.12 kV|Guyane xyoo 2025

01 General

1.1 Project Background

Xyoo 2025, peb tau xa 36 units ntawm 50 kVAib leeg-theem ncej-mounted transformersmus rau ib tug ntev -cov neeg siv khoom nyob rau hauv Guyana, ua raws li kev ua tiav thawj zaug ntawm tib tus qauv hauv xyoo 2024. Ua rau IEEE thiab ANSI C57.12.00 tus qauv, txhua qhov hloov pauv muaj qhov tseem ceeb ntawm 13,800 V, theem nrab voltage ntawm 120/240 V, rho tawm polarity, thiab vector pawg Ii0. Tsim nrog tooj liab windings, cov chav nyob muaj 2% impedance, thiab suav nrog tsis muaj -load kais hloov pauv (NLTC) nrog ± 2 × 2.5% kev hloov pauv (10% tag nrho). Qhov tsis muaj -load poob yog nyob ntawm 160 W, thiab qhov poob ntawm 512 W, ua kom ntseeg tau tias kev ua tau zoo rau kev siv hluav taws xob faib hluav taws xob.

Qhov kev txiav txim no tsis tsuas yog rov lees paub peb cov neeg siv khoom ntseeg siab hauv peb cov kev txawj ntse thiab cov khoom lag luam ruaj khov tab sis kuj tseem txhawb nqa peb lub xub ntiag nyob hauv Guyanese kev siv hluav taws xob. Kev xa khoom zoo ntawm cov chav no txhawb nqa kev tsim kho vaj tse hauv zos thiab txhim kho kev sib txuas hauv nroog thiab nroog hluav taws xob los ntawm kev xa tawm cov khoom siv hluav taws xob txhim khu kev qha.utility ncej daws teeb meem.

1.2 Technical Specification

50kVA ib theem hluav taws xob ncej mounted transformer specification thiab cov ntaub ntawv ntawv

1.3 Cov duab kos

50kVA ib theem hluav taws xob ncej mounted transformer kos duab

02 Kev tsim khoom

2.1 Magnetic Core

Qhov mob tseem ceeb, ua nrog kev ua haujlwm tsis tu ncua; ua kom deviations qis, sib nqus ua haujlwm zoo ib yam. Compact, kuj lub teeb, haum ncej-mounted setups; mechanical zog nyob ruaj khov, ruaj khov nyob rau hauv vibration lossis load hloov. Xyuas kom cov transformer khiav kev ntseeg siab, ntev -lub sij hawm.

2.2 Transformer Windings

Windings ua raws li IEEE thiab ANSI specs; siab-voltage siv tooj liab ntawv- zoo dua hluav taws xob xa tawm, qis-voltage txheej tooj liab hlau, muaj zog tiv thaiv luv- Circuit Court. Automation ua kom coils zoo ib yam; zoo txhim khu kev qha, kev ua tau zoo kwv yees. Txhua txheej tshuaj xyuas, sib dhos, npaj rau cov roj filling.

2.3 Transformer Tank

Lub tank me me, kaw thiab xau- kuaj; muaj zog txaus rau shocks, thauj vibration. Corrugated radiators ntawm ob sab, pab dissipate tshav kub zoo; ua kom transformer txias nyob rau hauv hnyav load los yog siab ambient kub. Tiv thaiv core, windings, tag nrho kev ua tau zoo nyob ruaj khov, nyab xeeb.

2.4 Kev Txhim Kho Kawg & Kev Tshuaj Xyuas

Core thiab windings nyob rau hauv qhov chaw, roj ntim rau rwb thaiv tsev thiab cua txias; HV/LV bushings, siab nyem valve, kais changer, grounding terminals, radiators ntsia tom ntej. Sab nrauv ntxuav, coatings kuaj; cov ntawv sau npe, cov ntaub ntawv npe, daim duab kab hluav taws xob tau txheeb xyuas -txhua yam tshuaj xyuas ua ntej xa khoom, npaj rau kev ua haujlwm.

03 Kev Xeem

Routine Test

1. Kev ntsuas ntsuas

2. Kev ntsuas qhov sib piv

3. Polarity Test

4. Tsis muaj Load Losses thiab Tsis Muaj Load Tam Sim No

5. Load Losses thiab impedance Voltage

6. Applied Voltage Test

7. Induced Voltage Withstand Test

8. Rwb thaiv tsev ntsuas ntsuas

9. Roj Dielectric Test

10. Kev kuaj dej tsis haum nrog lub siab rau cov kua Immersed Transformers

Kev xeem Standard

• IEEE C57.12.20-2017

IEEE Standard for Overhead-Type Distribution Transformers 500 kVA thiab Me; High Voltage, 34500 V thiab hauv qab; Tsawg Voltage, 7970/13 800YV thiab hauv qab

• IEEE C57.12.90-2021

IEEE Standard Test Code rau Liquid-Immersed Distribution, Fais Fab, thiab Regulating Transformers

• CSA C802.1-13 (R2022)

Yam tsawg kawg nkaus Efficiency rau kua-Fulled Distribution Transformers

04 Packing thiab Shipping

05 Site thiab Summary

Qhov no 50 kVA ib qho -theem transformer utility ncej yog tsim los rau kev nthuav dav ntawm lub zog xa hluav taws xob hauv cov neeg nyob deb nroog thiab ib nrab- thaj chaw hauv nroog Guyana. Nws yog tshwj xeeb tshaj yog haum rau kev siv hluav taws xob nyob deb nroog, kev hloov kho vaj tse, thiab kev lag luam teeb pom kev zoo. Cov neeg siv khoom 2025 rov hais dua ntawm 36 units txuas ntxiv qhov kev vam meej ntawm thawj xyoo 2024 xa khoom, qhia txog kev ntseeg siab hauv qhov zoo thiab kev ntseeg siab ntawm peb cov khoom.

Ua hauv nruj raws li IEEE thiab ANSI North American cov qauv, lub transformer nta ib tug compact qauv zoo tagnrho rau ncej- sab saum toj installation. Nws tau yoog tau zoo rau qhov chaw ntub thiab kub, muab cov cua kub zoo tshaj plaws thiab kev sib khi ua haujlwm kom ntseeg tau ntev - lub sijhawm ua haujlwm sab nraum zoov. Lub qhov txhab tsim lub qhov txhab txhim kho lub zog ua haujlwm thiab lub zog txhua yam, thaum tooj liab windings yog npaj rau kev txhim kho luv luv -circuit resistance. Lub tank kaw nrog corrugated radiators txhawb txhua yam - huab cua kev ua haujlwm.

Qhov kev hloov pauv no yog tsim los rau cov khoom siv hluav taws xob sib faib thiab yog qhov kev xaiv zoo tshaj plaws rau daim phiaj txuas ntxiv thiab kev txhim kho kev txhim kho hauv thaj chaw deb, ua rau peb muaj kev loj hlob nyob rau hauv South American lag luam.