S-4000/480/240
S Series • 4000kVA • 0.48/0.24 kV
S-4000/480/240 is a 4000 kVA, 0.48/0.24 kV oil-immersed transformer manufactured by Shandong Yaqing Electric Power Technology Co., Ltd. (QDTB) in Qingdao, China, designed and tested in accordance with IEEE C57 / ANSI C84.1, vector group Delta-Wye (IEEE Std), short-circuit impedance 7%, approximate weight 7590 kg. Available on FOB Qingdao terms; datasheet, routine test report and GA drawing issued with each unit.
Technical Specifications
| Model | S-4000/480/240 |
|---|---|
| Rated Capacity | 4000kVA |
| HV Voltage | 0.48 kV |
| LV Voltage | 0.24 kV |
| Frequency | 60 Hz |
| Vector Group | Delta-Wye (IEEE Std) |
| Short-circuit Impedance | 7% |
| Cooling | ONAN |
| Insulation | A (105°C) |
| Temperature Rise | 65 K |
| No-load Loss | 4764 W |
| Load Loss | 31643 W |
| Efficiency | IEC standard |
| Weight | 7590 kg |
| Dimensions | 2498×1247×1730 mm |
| Applied Standard | IEEE C57 / ANSI C84.1 |
Product Image & Parameters
Images are for illustration purposes only
S-4000/480/240
S Series
TECHNICAL DRAWING
Model: S-4000/480/240 | Type: Oil-immersed transformer | Capacity: 4000 kVA
FRONT ELEVATION
ELECTRICAL SCHEMATIC
EFFICIENCY vs LOAD
SIDE VIEW
TOP VIEW
TERMINAL BLOCK
CORE & WINDING
Technical specifications
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Product Description
4000kVA, 3-phase oil-immersed transformer, 60Hz, primary 480V (HV 480V), secondary 240V (LV 240V), IEC, insulation A, impedance 7%
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The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.
Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ
Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.
Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.
Read-only: no price factor, not part of the sum — the loss-grade cost is already carried by the efficiency (subtype) base price, so charging here would double-bill. Values come from the product library type-test data, interpolated between published capacities; grades the library does not cover show an em dash, never zero.
S13 系列（产品库 S13-M / 卷铁芯 S13-M.RL，Class 3）
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S-4000/480/240 - Frequently Asked Questions
QWhat are the main applications of S-4000/480/240?
S-4000/480/240 (S 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 S-4000/480/240?
Key specifications: Capacity: 4000kVA, HV 0.48 kV, LV 0.24 kV, Frequency 60 Hz, Impedance 7%, Connection Delta-Wye (IEEE Std), Cooling ONAN, Standard IEEE C57 / ANSI C84.1.
QCan S-4000/480/240 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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