QDTB® Transformer

SL11-M-250/10/0.48

SL11 Series • 250kVA • 10/0.48 kV

Product Image & Parameters

SL11 - QDTB

Images are for illustration purposes only

SL11-M-250/10/0.48

SL11 Series

Capacity
250kVA
HV Voltage
10kV
LV Voltage
0.48kV
Frequency
60Hz
Short-circuit impedance
4.5%
Cooling method
ONAN
Efficiency
Class 1
Applied standard
IEEE C57 / ANSI C84.1
Connection
Delta-Wye (IEEE Std)
Energy SavingLow Loss

TECHNICAL DRAWING

Model: SL11-M-250/10/0.48 | Type: Oil-immersed transformer | Capacity: 250 kVA

FRONT ELEVATION

Oil level1U1V1W2U2V2W2NTAPN.P.180mm240mm

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 level135mm

TOP VIEW

1U1V1W2U2V2W2N135mm

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:SL11-M-250/10/0.48
2. Type:Oil-immersed transformer
3. Capacity:250 kVA
4. Frequency:60 Hz
5. HV voltage:10 kV
6. LV voltage:0.48 kV
7. HV current:14.43A
8. LV current:300.7A
9. Vector group:Delta-Wye (IEEE Std)
10. Impedance:4.5%
11. Insulation level:A (105°C)
12. Temperature rise:65K
13. No-load loss:400W
14. Load loss:3050W
15. No-load current:0.4%
16. Cooling method:ONAN
17. Tap changer:±5×2.5% Multi-tap
18. Standard:IEEE C57 / ANSI C84.1
19. Dimensions:909×777×1188 mm
20. Weight:928kg
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Product Description

250kVA, 3-phase oil-immersed transformer, 60Hz, primary 10kV (HV 10kV), secondary 480V (LV 480V), S11, insulation A, impedance 4.5%

Related Keywords

SL11-M-250/10/0.48 oil immersed power transformer250kVA oil type distribution transformer10kV distribution network transformerSL11 aluminum winding oil immersed transformer cost-effective

Instant Selection & Quote Calculator

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EXW (FOB Qingdao)
$2,332
Range $2,146 ~ $2,519 (±8%)
Price Breakdown
Base price (interpolation)$2,332
× Product factor×1.0000
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× Copper-linked factor×1.0000
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Aluminum winding — no copper linkage

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SL11-M-250/10/0.48 - Frequently Asked Questions

QWhat are the main applications of SL11-M-250/10/0.48?

SL11-M-250/10/0.48 (SL11 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 SL11-M-250/10/0.48?

Key specifications: Capacity: 250kVA, HV 10 kV, LV 0.48 kV, Frequency 60 Hz, Impedance 4.5%, Connection Delta-Wye (IEEE Std), Cooling ONAN, Standard IEEE C57 / ANSI C84.1.

QCan SL11-M-250/10/0.48 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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