QDTB® Transformer

S20-M-4000/35/0.4

S20-M Series • 4000kVA • 35/0.4 kV

Product Image & Parameters

S20-M - QDTB

Images are for illustration purposes only

S20-M-4000/35/0.4

S20-M Series

Capacity
4000kVA
HV Voltage
35kV
LV Voltage
0.4kV
Frequency
50Hz
Short-circuit impedance
7%
Cooling method
ONAN
Efficiency
Class 20
Applied standard
IEC 60076
Connection
Dyn11 (IEC)
Energy SavingLow Loss

TECHNICAL DRAWING

Model: S20-M-4000/35/0.4 | Type: Oil-immersed transformer | Capacity: 4000 kVA

FRONT ELEVATION

Oil level1U1V1W2U2V2W2NTAPN.P.330mm390mm

ELECTRICAL SCHEMATIC

HV WINDING (Delta)1U1V1WLV WINDING (Star)2U2V2W2NDyn11 (IEC)

EFFICIENCY vs LOAD

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

SIDE VIEW

Oil level210mm

TOP VIEW

1U1V1W2U2V2W2N210mm

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:S20-M-4000/35/0.4
2. Type:Oil-immersed transformer
3. Capacity:4000 kVA
4. Frequency:50 Hz
5. HV voltage:35 kV
6. LV voltage:0.4 kV
7. HV current:65.98A
8. LV current:5773.5A
9. Vector group:Dyn11 (IEC)
10. Impedance:7%
11. Insulation level:A (105°C)
12. Temperature rise:65K
13. No-load loss:1813W
14. Load loss:21540W
15. No-load current:0.2%
16. Cooling method:ONAN
17. Tap changer:±8×1.25% OLTC
18. Standard:IEC 60076
19. Dimensions:2498×1247×1730 mm
20. Weight:7590kg
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Product Description

4000kVA, 3-phase oil-immersed transformer, 50Hz, primary 35kV (HV 35kV), secondary 400V (LV 400V), S20, insulation A, impedance 7%

Related Keywords

S20-M-4000/35/0.4 oil immersed power transformer4000kVA oil type distribution transformer35kV distribution network transformerS20 high efficiency oil type transformer for data center

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

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S20-M-4000/35/0.4 - Frequently Asked Questions

QWhat are the main applications of S20-M-4000/35/0.4?

S20-M-4000/35/0.4 (S20-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 S20-M-4000/35/0.4?

Key specifications: Capacity: 4000kVA, HV 35 kV, LV 0.4 kV, Frequency 50 Hz, Impedance 7%, Connection Dyn11 (IEC), Cooling ONAN, Standard IEC 60076.

QCan S20-M-4000/35/0.4 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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