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.
S13-35kV Oil Immersed Power Transformer
1. Voltage rating: 35KV;
2. Adjustable voltage (no excitation voltage regulation);
3. Tap range: ±5%, ±2*2.5%;
4. Capacity range: 630-31500kVA;
5. Frequency: 50Hz, 60Hz;
6. Number of phases: Single-phase, three-phase;
7. Connection group designation: Yyno or Dyn11;
8. Impedance voltage: Conforms to the specifications in the technical parameter table (or as required by the user);
9. Operating environment: Maximum outdoor temperature not exceeding 40℃ (or as required by the user);
10. Cooling method: Oil immersion self-cooling.
Product Description
S13-35kV Oil Immersed Power Transformer
Reliable Power Distribution Solution for Your Critical Infrastructure
The S13-35kV Oil Immersed Power Transformer from Lijie Electric Power Technology Group delivers exceptional performance for your 35kV transmission systems. Our transformer achieves Level 2 Energy Efficiency with no-load losses significantly lower than S11-type units. With capacity ranging from 630-31500kVA and a fully sealed design ensuring 20+ years of service life, you get remarkable reliability. Our manufacturing facilities span 500,000 square meters across two bases, backed by over 160 engineers. Each unit features 0.23mm grain-oriented silicon steel cores and oxygen-free copper windings for optimal efficiency.
Technical Specifications
| Parameter | Specification |
|---|---|
| Voltage Rating | 35kV |
| Capacity Range | 630-31500kVA |
| Frequency | 50Hz / 60Hz |
| Phases | Single-phase / Three-phase |
| Voltage Regulation | No-load tap changer, ±5%, ±2×2.5% |
| Connection Group | Yyn0 or Dyn11 |
| Cooling Method | Oil immersion self-cooling (ONAN) |
| Energy Efficiency | Level 2 (National Standard) |
| Core Material | 0.23mm grain-oriented silicon steel |
| Winding Material | Oxygen-free copper wire/foil |
| Service Life | 20+ years |
| Operating Temperature | -40°C to +40°C (customizable) |
Why Choose Our Oil Immersed Transformer?
Superior Energy Performance
You'll appreciate the surprising productivity of our plan. The center employs ultra-thin 0.23mm high-permeability silicon steel sheets with progressed five-level step joint innovation. This diminishes your operational costs altogether. Your vitality bills will reflect the contrast immediately.
Fully Fixed Longevity
Our layered tank structure totally confines transformer oil from discuss contact. You won't require normal oil recharging or filtration support. The epoxy powder coating withstands cruel open air conditions. Your venture remains ensured for decades.
Built-In Security Features
Safety things to your operations. Each unit incorporates:
- Pressure relief valve for overpressure protection
- Gas relay monitoring internal faults
- Oil temperature gauge tracking thermal conditions
- Oil level indicator for visual inspection
The winding design withstands sudden short-circuit currents. Partial discharge levels stay below 10pC at 1.73 times rated voltage. You operate with confidence.
Installation Flexibility
Your site requirements vary. Our S13-35kV Oil Immersed Power Transformers support outdoor floor-mounted and platform-mounted configurations. You save on infrastructure costs without dedicated power distribution rooms. The terminal layout simplifies on-site wiring. Your installation team will appreciate the straightforward setup.
Where You'll Use These Transformers
Territorial Dissemination Networks
Serving as spine step-down center points, these units effectively supply control to your 10kV and 6kV dissemination frameworks. You get steady voltage for whole districts.
Industrial Facilities
Large fabricating plants in chemical, metallurgical, and car divisions depend on our transformers. Your generation lines get steady, high-capacity control supply.
Urban Improvement Projects
New private communities and commercial zones require centralized control arrangements. You meet developing request with adaptable capacity options.
Renewable Vitality Integration
Photovoltaic control stations require specialized 35kV step-down capabilities. Our customized separator arrangements adjust to modern vitality characteristics. You coordinated clean control seamlessly.
Quality You Can Trust
Lijie Electric works with ISO 9001:2015 certification nearby CE, UL, and IEC compliance. Our items pass thorough testing at the National Transformer Quality Supervision and Assessment Center. You get total documentation counting test reports, specialized drawings, and operation manuals.
With yearly deals surpassing 5 billion RMB and sends out to Australia, India, Vietnam, Malaysia, Indonesia, Egypt, and Kenya, we've demonstrated our unwavering quality universally. Over 2,000 representatives guarantee your orders meet strict quality guidelines.
Frequently Asked Questions
Q: What's the typical delivery time for a product?
Production cycles range from 6 to 30 days depending on your specifications and order quantity. We provide visualized production tracking so you always know your order status.
Q: Can you customize the transformer for special environmental conditions?
Absolutely. We tailor products to your specific requirements. Whether you face extreme temperatures, high humidity, or dusty environments, we adapt our design accordingly.
Q: What maintenance does this transformer require?
Very minimal. You simply check appearance, oil level, and temperature during routine inspections. The fully sealed design eliminates oil replenishment needs. It's suitable for unattended operation.
Q: Do you provide installation support?
Yes. We offer installation guidance, comprehensive technical documentation, and spare parts supply. Your team receives the support needed for smooth commissioning.
Q: What connection groups are available?
We provide Yyn0 or Dyn11 connection configurations. Tell us your system requirements and we'll recommend the optimal solution.
Q: Is the transformer suitable for high-altitude locations?
Standard units operate up to 1,000 meters altitude. For higher elevations, we modify insulation and cooling specifications to match your site conditions.
Get Your Custom Solution Today
Ready to upgrade your S13-35kV Oil Immersed Power Transformer power distribution system? Contact our technical team at lijieelectrical@gmail.com to discuss your specific requirements.
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