QDTB® Transformer

S11-M-20/0.48/0.208

S11-M Series • 20kVA • 0.48/0.208 kV

Product Image & Parameters

S11-M - QDTB

Images are for illustration purposes only

S11-M-20/0.48/0.208

S11-M Series

Capacity
20kVA
HV Voltage
0.48kV
LV Voltage
0.208kV
Frequency
60Hz
Short-circuit impedance
4%
Cooling method
ONAN
Efficiency
Class 1
Applied standard
IEEE C57 / ANSI C84.1
Connection
Delta-Wye (IEEE Std)
Energy SavingLow Loss

TECHNICAL DRAWING

Model: S11-M-20/0.48/0.208 | Type: Oil-immersed transformer | Capacity: 20 kVA

FRONT ELEVATION

Oil level1U1V1W2U2V2W2NTAPN.P.120mm150mm

ELECTRICAL SCHEMATIC

HV WINDING (Delta)1U1V1WLV WINDING (Star)2U2V2W2NDelta-Wye (IEEE Std)

EFFICIENCY vs LOAD

90%95%98%99%0%25%50%75%100%≈99%load %efficiency %

SIDE VIEW

Oil level90mm

TOP VIEW

1U1V1W2U2V2W2N90mm

TERMINAL BLOCK

HV TERMINAL BLOCK1U1V1W1N1PELV TERMINAL BLOCK2U2V2W2N2PE2122Terminal block configurationTin-plated copper busbar

CORE & WINDING

OIL / TANKHV winding/bushingINSULATIONLV winding/bushingIron coreconcentric cross-section

Technical specifications

1. Model:S11-M-20/0.48/0.208
2. Type:Oil-immersed transformer
3. Capacity:20 kVA
4. Frequency:60 Hz
5. HV voltage:0.48 kV
6. LV voltage:0.208 kV
7. HV current:24.06A
8. LV current:55.51A
9. Vector group:Delta-Wye (IEEE Std)
10. Impedance:4%
11. Insulation level:A (105°C)
12. Temperature rise:65K
13. No-load loss:81W
14. Load loss:465W
15. No-load current:1%
16. Cooling method:ONAN
17. Tap changer:±5% Single-tap
18. Standard:IEEE C57 / ANSI C84.1
19. Dimensions:700×402×615 mm
20. Weight:265kg
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Product Description

20kVA, 3-phase oil-immersed transformer, 60Hz, primary 480V (HV 480V), secondary 208V (LV 208V), S11, insulation A, impedance 4%

Related Keywords

S11-M-20/0.48/0.208 oil immersed power transformer20kVA oil type distribution transformer0.48kV distribution network transformerS11-M series oil filled transformer low loss for urban grid

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EXW (FOB Qingdao)
$2,332
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Aluminum winding — no copper linkage

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S11-M-20/0.48/0.208 - Frequently Asked Questions

QWhat are the main applications of S11-M-20/0.48/0.208?

S11-M-20/0.48/0.208 (S11-M series, Oil-Immersed Transformers) is widely used in industrial power distribution, commercial buildings and utility power systems. Can be flexibly configured according to actual project requirements.

QWhat are the main technical specifications of S11-M-20/0.48/0.208?

Key specifications: Capacity: 20kVA, HV 0.48 kV, LV 0.208 kV, Frequency 60 Hz, Impedance 4%, Connection Delta-Wye (IEEE Std), Cooling ONAN, Standard IEEE C57 / ANSI C84.1.

QCan S11-M-20/0.48/0.208 be custom ordered?

Yes. QDTB® provides comprehensive OEM/ODM customization services. Parameters such as capacity, voltage ratio, cooling method, connection group and protection class can all be adjusted. Over 25 years of manufacturing experience ensures consistent quality.

QHow to get a quote and technical documentation?

Contact via the "Send Inquiry" button below, or contact sales at Alice@qdtb-transformer.com / +86 13698683193. We provide detailed quotations and technical documentation instantly.

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