QDTB® Transformer

SFFZ-40/10/0.4

SFFZ Series • 40kVA • 10/0.4 kV

Product Image & Parameters

SFFZ - QDTB

Images are for illustration purposes only

SFFZ-40/10/0.4

SFFZ Series

Capacity
40kVA
HV Voltage
10kV
LV Voltage
0.4kV
Frequency
50Hz
Short-circuit impedance
4%
Cooling method
AN
Efficiency
National/industry standard
Applied standard
IEC 60076
Connection
Dyn11 (IEC)
Energy SavingLow Loss

TECHNICAL DRAWING

Model: SFFZ-40/10/0.4 | Type: Oil-immersed transformer | Capacity: 40 kVA

FRONT ELEVATION

Oil level1U1V1W2U2V2W2NTAPN.P.120mm150mm

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 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:SFFZ-40/10/0.4
2. Type:Oil-immersed transformer
3. Capacity:40 kVA
4. Frequency:50 Hz
5. HV voltage:10 kV
6. LV voltage:0.4 kV
7. HV current:2.31A
8. LV current:57.74A
9. Vector group:Dyn11 (IEC)
10. Impedance:4%
11. Insulation level:H (180°C)
12. Temperature rise:65K
13. No-load loss:2035W
14. Load loss:5088W
15. No-load current:1.6%
16. Cooling method:AN
17. Tap changer:±5% Single-tap
18. Standard:IEC 60076
19. Dimensions:425×360×420 mm
20. Weight:165kg
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Product Description

40kVA, 3-phase isolation, dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), Standard, insulation H, impedance 4%

Related Keywords

SFFZ-40/10/0.4 isolation control transformer40kVA control transformerprimary 10kV secondary 0.4kVSFFZ split winding transformer for power plant auxiliary system

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Aluminum winding — no copper linkage

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SFFZ-40/10/0.4 - Frequently Asked Questions

QWhat are the main applications of SFFZ-40/10/0.4?

SFFZ-40/10/0.4 (SFFZ series, Special/Isolation/Control 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 SFFZ-40/10/0.4?

Key specifications: Capacity: 40kVA, HV 10 kV, LV 0.4 kV, Frequency 50 Hz, Impedance 4%, Connection Dyn11 (IEC), Cooling AN, Standard IEC 60076.

QCan SFFZ-40/10/0.4 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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SFFZ-0.1/10/0.4
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