April 27, 2025
With a tight project schedule, the manufacturer delivered on time, and on-site technical personnel provided guidance throughout the entire installation and commissioning process; the collaboration was highly efficient and hassle-free.
S11 type single-phase oil-immersed distribution transformer
1. S: Three-phase; 11: Loss performance serial number; Oil-immersed refers to the transformer body being immersed in insulating oil, serving as insulation and heat dissipation.
2. Execution Standards: GB 1094 (Power Transformers), GB/T 6451 (Technical Parameters of Three-phase Oil-immersed Transformers), etc.
3. Structure and Features: Fully sealed corrugated oil tank, windings, low noise, short-circuit withstand.
4. Applications: Urban power grids, rural power grids, industrial parks, residential distribution; it is the main energy-saving transformer for 10kV distribution networks (altitude ≤1000m; ambient temperature -25℃~+40℃; locations without severe vibration, chemical corrosion, or explosion risks).
5. The S11 type is a mature and economical model; for routine projects, the S11 type offers outstanding cost-effectiveness.
6. Standardized design, special requirements can be customized.
7. Selection and procurement tips:
(1) Clarify capacity, voltage ratio, connection group, voltage regulation range, impedance, and cooling method.
(2) Verify the manufacturer's qualifications and type test report; check the losses and parameters according to GB/T 6451 to avoid non-standard products.
Product Description
S11 Type Single-Phase Oil-Immersed Distribution Transformer
When you need dependable power distribution for your facility, the S11 type single-phase oil-immersed distribution transformer from Lijie Electric delivers proven performance. This mature, economical model features a fully sealed corrugated oil tank that prevents moisture ingress and oxygen contact, extending service life significantly. With capacity ranging from 30-3150kVA and compliance with GB 1094 and GB/T 6451 standards, you get reliable power transformation backed by our 500,000 square meter manufacturing facility and 160+ engineering professionals. Our annual production exceeds 5 billion RMB, serving customers across Asia, Africa, and Oceania.
What Makes This Transformer Different?
Sealed for Longevity
Your transformer works in a completely fixed environment. The folded oil tank plan pieces discuss contact totally. This implies your protection oil remains immaculate and dry. No dampness assimilation happens. No oxygen enters to corrupt inside components. The result? You appreciate amplified gear life and diminished upkeep costs.
Energy-Efficient Design
The S11 arrangement speaks to develop low-loss innovation. You advantage from optimized press center development and copper windings that minimize vitality squander. Your operational costs diminish whereas control quality remains reliable. This item meets cutting edge vitality proficiency necessities without premium pricing.
Flexible Configuration
Your particular needs matter. We offer numerous voltage levels (6kV, 12kV), frequencies (50Hz, 60Hz), and tap extend choices (±5%, ±2X2.5%). Association bunches incorporate Yyn0 and Dyn11 arrangements. Whether you're controlling urban lattices, provincial systems, or mechanical offices, you can indicate precisely what your application requests.
Technical Specifications
| Parameter | Specification |
|---|---|
| Voltage Level | 6kV, 12kV |
| Capacity Range | 30-3150kVA |
| Phases | Single-phase, Three-phase |
| Frequency | 50Hz, 60Hz |
| Voltage Regulation | Non-excitation type |
| Tap Range | ±5%, ±2X2.5% |
| Connection Group | Yyn0 or Dyn11 |
| Cooling Method | Oil-immersed self-cooling |
| Operating Temperature | -25℃ to +40℃ |
| Altitude | ≤1000m |
| Insulation Level | Power frequency: AC-35kV, Impulse: L1-75kV |
| Standards Compliance | GB 1094, GB/T 6451, ISO 9001:2015 |
Why Choose Lijie Electric?
Manufacturing Excellence
You accomplice with a National High-Tech Undertaking. Our two generation bases in Xuzhou and Nantong utilize over 2,000 experts. Progressed testing hardware guarantees each unit meets details some time recently shipment. We've earned acknowledgment as a "Specialized, Refined, and Unused 'Little Giant'" venture from Chinese authorities.
Global Quality Standards
Your transformer carries different certifications. ISO 9001:2015 affirms our quality administration framework. CE and IEC certifications empower universal sending. Each item experiences testing at the National Transformer Quality Supervision and Review Center. You get total specialized documentation counting drawings, manuals, and test reports.
Custom Solutions
Your venture may have one of a kind necessities. We customize voltage proportions, impedance values, and cooling strategies inside 6-30 days. Our building group surveys your details and proposes optimized arrangements. This adaptability has made a difference clients in 30+ nations accomplish their control dispersion objectives.
Ideal Applications
You'll find this transformer perfect for:
- Urban and Rural Power Grids – Reliable 10kV distribution network backbone
- Industrial Parks – Consistent power for manufacturing facilities
- Residential Communities – Safe, quiet operation near populated areas
- Commercial Buildings – Compact footprint with excellent load characteristics
The S11 type single-phase oil-immersed distribution transformer operates reliably in environments without severe vibration, chemical corrosion, or explosion risks.
How to Select Your Transformer?
Step 1: Define Your Requirements
You should clarify capacity needs, voltage ratio, connection group, and impedance. Consider your load characteristics and future expansion plans.
Step 2: Verify Performance Standards
Check that specifications match GB/T 6451 parameters. Review loss data carefully. Our transparent documentation helps you compare accurately.
Step 3: Confirm Customization Needs
Tell us about special environmental conditions or installation constraints. We'll adapt the design to fit your situation perfectly.
Frequently Asked Questions
Q: What's the difference between S11 and newer transformer models?
A: The S11 represents mature, cost-effective technology. While S13 and S15 models offer lower losses, the S11 provides excellent value for standard applications. You get proven reliability without paying for unnecessary features.
Q: How long does your transformer last?
A: With proper maintenance, you can expect 25-30 years of service. The fully sealed design significantly extends life compared to open-tank models by preventing oil contamination.
Q: Can you handle installation in remote locations?
A: Yes. We provide installation guidance and technical support worldwide. Our export experience covers Australia, Kazakhstan, Kenya, and many other countries. You'll receive comprehensive commissioning assistance.
Q: What's included with my purchase?
A: You receive the complete unit, technical drawings, operation manual, factory test reports, and spare parts list. We also supply installation accessories as needed.
Q: How quickly can you deliver?
A: Standard configurations ship within 6-15 days. Custom units require 15-30 days depending on specifications. We'll confirm your exact timeline after reviewing requirements.
Contact Us Today
Ready to power your project with S11 type single-phase oil-immersed distribution transformer? Email us at lijieelectrical@gmail.com with your specifications.
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