







S20 Ultra-High Efficiency Oil-Immersed Distribution Transformer (30kVA-3500kVA)
Next-generation S20 oil-immersed distribution transformer (30kVA-3500kVA, 50/60Hz). Delivers industry-leading energy efficiency, extremely low losses, and premium copper windings, fully meeting IEC 60076 standards for modern green power grids.
100% Pure Copper
Guaranteed premium copper windings for superior thermal performance and longevity.
7-Day Rapid Shipping
Industry-leading lead times to keep your infrastructure projects on schedule.
Detailed Description
Technical Parameters
| Series Model | S20-M Series (Ultra-High Efficiency) |
| Rated Capacity | 30 kVA - 3500 kVA (Customizable Range) |
| Rated Frequency | 50 Hz / 60 Hz |
| Frequency | 50Hz / 60Hz |
| Primary Voltage | 6kV / 10kV / 11kV / 20kV / 22kV / 33kV (Customizable) |
| Secondary Voltage | 0.4kV / 0.415kV / 0.433kV (Customizable) |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Winding Material | 100% Pure Copper |
| Standard Compliance | IEC 60076, CE, ISO9001 |

Core Advantages
Industry-Leading Energy Efficiency
Utilizes premium high-grade silicon steel cores to achieve ultra-low no-load and load losses, significantly reducing long-term energy costs
100% Pure Copper Windings
Constructed with high-conductivity pure copper for superior short-circuit resistance, excellent thermal stability, and maximum operational lifespan
Hermetically Sealed & Maintenance-Free
The advanced corrugated fin tank ensures zero contact between the insulating oil and air, preventing moisture and eliminating the need for routine oil testing
Green Grid Ready
Perfectly suited for modern eco-friendly power upgrades worldwide, supporting 50Hz/60Hz dual-frequency with flexible, customizable voltage options up to 3500kVA
Strict International Standards
Fully compliant with IEC 60076, CE, and ISO 9001 certifications, ensuring premium safety, rigorous testing, and export-grade reliability for global markets
Ultra-Low Noise Operation
Advanced core assembly techniques significantly minimize vibration and electromagnetic noise, making it highly suitable for urban, commercial, and densely populated environments


Detailed Display








Logistics Strategy
We understand that safe delivery is as important as the equipment itself. Every unit is securely fastened in reinforced wooden crates or heavy-duty sea-freight packaging to prevent any shifting during transit.
- ✓Moisture-proof vacuum sealing
- ✓Real-time GPS tracking for overseas
- ✓Pre-export factory FAT report included

Expert FAQs
What is your standard delivery time?
For standard units, we can ship within 7 days. Customized configurations typically take 15-25 days.
Do you provide overseas installation support?
Yes, we offer on-site engineering supervision and online technical commissioning support for global projects.
Are your transformers compatible with smart grid systems?
Absolutely. We provide integrated intelligent monitoring systems for real-time load and health analysis.
What certifications do you hold?
Our factory is ISO 9001, ISO 14001 certified, and all products carry the CE mark and local grid compliance reports.
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