500 KVA Utility Transformer Pad-34.5 / 0.48 KV|USA 2025

01 General

1.1 Project Description

500 kVA uapeb theem ncoo mounted transformertau xa mus rau Tebchaws Meskas xyoo 2025. Lub zog ntsuas hluav taws xob ntawm lub tshuab hluav taws xob yog 500 kVA nrog KNAN txias. Qhov siab voltage yog 34.5GrdY / 19.92 kV nrog ± 2 * 2.5% tapping ntau yam (NLTC), qhov tsawg voltage yog 0.48 kV, lawv tsim ib pawg vector ntawm YNd1.

Qhov no 500kVA peb-theem ncoo-mounted transformer yog tsim tshwj xeeb rau kev xa tawm sab nraum zoov hauv North American thiab lwm yam kev lag luam xav tau. Nws muab cov kev taw qhia me me thiab txhim khu kev qha nruab nrab-voltage rau qis-voltage fais fab kev hloov pauv, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev lag luam complexes, industrial parks, subdivisions, thiab pej xeem infrastructure networks.

Advanced hluav taws xob tsim nrog YNd1 vector pawg.
Cov khoom siv hluav taws xob hloov hluav taws xob txais yuav ib pawg YNd1 vector, nrog rau lub hnub qub high-voltage-txuas thiab sib cais tawm nruab nrab bushing (H0). Qhov kev teeb tsa no muab cov txheej txheem hloov tau yooj yim hauv av xaiv. Qhov qis-voltage delta kev twb kev txuas tsim ib txoj kev kaw rau xoom-sequence tam sim no, zoo suppressing harmonics thiab kev txhim kho lub transformer lub peev xwm los tuav unbalanced loads. High-quality Cooper fuses yog kev koom ua ke ntawm thawj sab, xa cov kev ruaj ntseg overcurrent thiab luv-circuit tiv thaiv los ntawm kev sib cais ceev ceev.

Ib puag ncig tus phooj ywg insulating thiab cua txias system (KNAN / FR3).
Txoj kev ua kom txias yog KNAN (natural convection siv cov kua tsis-flammable). Lub transformer yog ntim nrog FR3 natural ester kua - ib tug tauj dua tshiab, bio-degradable dielectric muab tau los ntawm zaub roj. FR3 muaj qhov taw tes nyem siab dua 300 degree, txhim kho kev nyab xeeb hluav taws zoo piv rau cov roj ntxhia cov pa. Nws muaj peev xwm tuav tau zoo heev (425 ppm saturation ntawm -20℃vs. tsuas yog ~ 8 ppm rau cov roj ntxhia) txo qhov kev pheej hmoo ntawm rwb thaiv tsev tsis ua haujlwm. Ntxiv mus, FR3 tso cai rau 20% ntau dua kev muaj peev xwm tsis muaj kev txi lub neej hloov pauv lossis kev ntseeg siab. Nws lub zog dielectric zoo tshaj thiab kev laus ua haujlwm tau raug pov thawj hauv ntau lab ntawm cov hloov pauv thoob ntiaj teb.

Ua raws li DOE cov qauv kev ua haujlwm zoo.
Lub transformer nruj me ntsis raws li qhov tseeb US Department of Energy (DOE) efficiency yuav tsum tau. Kev poob raws li cov xwm txheej uas tau teev tseg yog tswj tau mus rau theem kev lag luam, pab cov neeg siv khoom kom ua tiav kev txuag hluav taws xob thiab txo qis carbon emissions.

Nrog nws cov kev tsim hluav taws xob zoo tshaj plaws, eco-friendly thiab hluav taws-kev nyab xeeb FR3 kua, zoo Cooper fuses, thiab nruj ua raws li DOE cov qauv kev ua tau zoo, qhov 500kVA pad-mounted transformer no yog ib qho kev daws teeb meem rau ntau yam kev faib hluav taws xob.

1.2 Technical Specification

500 kVA hluav taws xob transformer ncoo specifications hom thiab cov ntaub ntawv ntawv

1.3 Cov duab kos

500 kVA hluav taws xob transformer ncoo daim duab kos duab thiab loj.

02 Kev tsim khoom

2.1 Core

Lub tshuab hluav taws xob hloov hluav taws xob tau txais peb lub-limb core tsim los ntawm siab-permeability grain-oriented silicon steel, tag nrho matched rau 500kVA rated peev thiab tsim raws li IEEE C57.12.34-2022. Ntsuas tsis-load poob tsuas yog 701W (ua kom ntseeg tau 730W) thiab qhov zoo siab tam sim no yog 0.38%, ob qho tib si zoo dua li cov qauv yuav tsum tau ua, lees paub qhov zoo tshaj plaws sib nqus Circuit Court efficiency thiab cov tub ntxhais poob qis. Thaum lub sij hawm tsim khoom, high-precision stacking txheej txheem yog ua hauj lwm nrog kev tswj nruj ntawm kev sib koom ua ke thiab stacking siab; Txhua qhov tseem ceeb raug txheeb xyuas los ntawm kev kuaj tsis muaj kev thauj khoom ua ntej sib dhos, ua kom muaj kev ua tau zoo thiab kev ntseeg tau thoob plaws txhua chav.

2.2 Cua txias

Windings yog ua los ntawm high-zoo txhuas nrog ib pab pawg neeg YNd1 vector, thiab H0 bushing ntawm high-voltage sab yog cais tawm los pab txhawb kev nruab nrab hauv av los yog kev saib xyuas, zoo kawg nkaus ua raws li qhov yuav tsum tau ua. Tapping yog off-circuit (NLTC) nrog ± 2 × 2.5% cov kauj ruam, ua raws IEEE C57.12.34-2022. Kev ntsuas qhov sib txawv ntawm qhov sib txawv ntawm -0.04% mus rau 0.00% (zoo dua li ± 0.5% kam rau ua), qhov siab tshaj plaws kuj tsis sib npaug ntawm qhov qis-voltage sab yog 2.21% (zoo nyob rau hauv ib txwm tsawg dua lossis sib npaug li 4% txwv), thiab cov theem kev sib raug zoo tau lees paub qhov tseeb YNd1 kev sib txuas. Automated winding tshuab nrog kev tswj nruj ntawm lub sijhawm tiag tiag yog siv, ua raws li kev ziab kom zoo ua ntej sib dhos, ua kom ruaj khov tig-rau-tig rwb thaiv tsev thiab txhua yam robustness.

2.3 Tank

Lub tank tau kaw tag nrho, siv KNAN txias (natural oil circulation, natural air cooling), thiab puv nrog high-fire-point FR3 natural ester fluid - environmentally friendly and fire- safe, full matched to outdoor installation and IEEE standard. Kev ntsuam xyuas cov dej xau nrog 20kPa siab rau 24 teev tsis pom tias tsis muaj dej los yog tsis muaj deformation. Qhov kub thiab txias tsim raws li qhov nruab nrab winding nce Tsawg dua lossis sib npaug li 65℃thiab cov roj saum toj kawg nkaus nce qis dua lossis sib npaug li 65 degree. Txhua lub tank welds yog 100% tshuaj xyuas los ntawm dye penetrant lossis X-ray, thiab txhua lub tank raug ntsuas siab ua ntej kev sib dhos zaum kawg. Cov cuab yeej rub-ring hom siab nyem yog muab rau kev nyab xeeb ntxiv.

2.4 Kev sib dhos zaum kawg

Kev sib dhos ua tiav suav nrog kev tuag-tawg thawj bushings, lub tshuab nqus tsev siab ntsuas, rub lub nplhaib siab nyem valve, roj ntws valve nrog sampling valve, thiab lub ntsaws ntsaws sab sauv, txhua lub tsev nyob hauv NEMA 3R tamper-proof tswj txee. Kev tiv thaiv tseem ceeb siv cov Cooper fuses zoo. Kev sib dhos dhau qhov kev sim ntsuas hluav taws xob (10kV ntawm LV sab rau 60 vib nas this, tsis muaj kev puas tsuaj), induced voltage withstand test (69kV ntawm HV sab ntawm 150Hz rau 48 vib nas this, tsis tawg), thiab rwb thaiv tsev ntsuas (HV-LV rau hauv av: 2.58GΩ, HV & LV rau hauv av: 1.76GΩ). Txhua qhov sib dhos ua ke hloov pauv tau ua tiav qhov kev sim ua tiav (qhov sib piv, polarity, poob, dielectric, thiab lwm yam) ua ntej xa khoom.

03 Kev Xeem

Txhua qhov kev xeem tau ua nruj me ntsis raws li IEEE C57.12.90-2021, nrog rau daim ntawv tshaj tawm No. 260213 hnub tim 2026-04-20. Qhov tseem ceeb ntsuas qhov tseem ceeb: tsis muaj-load poob 701W (guarantee 730W), load poob ntawm 85℃3,529W (guarantee 4,000W), luv-circuit impedance 5.49% ( kam rau ua ± 7.5% ntawm 5.75%), thiab efficiency 99.40% sib npaug zos 99.35%). Qhov sib txawv ntawm qhov sib txawv ntawm -0.04% thiab 0.00%; qhov siab tshaj qhov tsis sib npaug yog 2.21%; theem kev sib raug zoo yog YNd1. Kev ntsuas hluav taws xob siv hluav taws xob (10kV / 60s), kev ntsuas hluav taws xob ua hluav taws xob (69kV / 150Hz / 48s), thiab 24-teev kev ntsuas hluav taws xob (20kPa) tau dhau los yam tsis muaj teeb meem. Rwb thaiv tsev qhov tseem ceeb tshaj 1.7GΩ. Cov kev ntsuam xyuas niaj hnub thiab kev xaiv xaiv (ua haujlwm, qhov kub thiab txias, impulse, thiab lwm yam) ua kom pom tseeb tias qhov kev hloov pauv no muaj kev ntseeg tau zoo thiab cov npoo, ua tiav raws li North American daim phiaj thiab DOE lub zog siv hluav taws xob.

04 Packing thiab Shipping

4.1 Ntim

Packing muaj ib tug ntoo skid puag, waterproof tarpaulin, thiab steel strapping, haum rau ob qho tib si hiav txwv thiab av thauj, raws li export yuav tsum tau rau ya raws thiab kev tiv thaiv poob siab (sib npaug rau IP23). Tag nrho cov terminals raug kho nrog anti-xeb txheej, thiab cov khoom siv yog ib tus zuj zus ntim nrog cov ncauj lus kom ntxaws. Kev kuaj pom zaum kawg thiab cov ntaub ntawv yees duab tau ua ua ntej ntim khoom kom tsis muaj xeb lossis puas tsuaj rau cov neeg siv khoom tau txais.

4.2 Shipping

Lub transformer tuaj yeem raug xa los ntawm lub tsheb lossis hauv cov thawv, nrog rau 40ft HQ thawv thauj khoom npaj muaj raws li kev thov. Cov chaw nres nkoj nyiam ntawm kev tawm mus yog Ningbo lossis Shanghai. Cov ntaub ntawv tiav cov ntaub ntawv suav nrog cov ntawv xeem, daim ntawv pov thawj ntawm kev ua raws, phau ntawv qhia kev teeb tsa, kos duab kos duab, thiab daim duab kos npe. Kev saib xyuas kev thauj khoom thib peb muaj yog tias xav tau. Tag nrho cov ntaub ntawv logistics yog traceable, thiab export kev lis kev cai yog muab los txo qhov kev pheej hmoo ntawm kev xa khoom.

05 Cov ntsiab lus

Qhov no 500kVA peb-theem pad-mounted transformer ua tau raws li lossis tshaj IEEE cov qauv thiab DOE kev ua haujlwm tau zoo hauv kev tsim, tsim khoom, thiab kev sim. YNd1 kev twb kev txuas nrog cais coj tawm H0 bushing haum rau ntau yam txheej txheem hauv av; KNAN txias nrogFR3 natural ester kuamuab kev phooj ywg ib puag ncig thiab kev nyab xeeb hluav taws; thiab Cooper fuses xyuas kom ntseeg tau kev tiv thaiv. Ntsuas kev ua tau zoo ntawm 99.40%, ua ke nrog tsis muaj kev thauj khoom poob, thauj khoom poob, thiab impedance txhua yam zoo dua li cov txiaj ntsig tau lees paub, ua pov thawj ua tau zoo. Txhua kauj ruam los ntawm cov tub ntxhais thiab winding mus rau kev sib dhos, kev sim, ntim, thiab kev xa khoom yuav raug tswj xyuas nruj. Lub tshuab hluav taws xob no yog qhov tsim nyog rau kev siv sab nraum zoov hauv North American thiab thoob ntiaj teb 34.5kV tis network, chaw ua si, chaw ua lag luam, thiab EV them chaw nres tsheb - xa cov kev nyab xeeb, ua haujlwm tau zoo, thiab ua haujlwm ntev ntev.