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.
S18 type oil-immersed distribution transformer
1. Low loss, fully sealed, non-excitation voltage regulation (5 levels), 24-hour uninterrupted power supply, long annual operating time (design life ≥ 30 years).
2. Cooling method: ONAN oil-immersed self-cooling.
3. High-permeability cold-rolled grain-oriented silicon steel sheets (0.23mm grade), fully oblique joints, no punching, low noise, low loss.
4. Fully sealed corrugated oil tank, no oil conservator; fully sealed structure, no core lifting, no maintenance.
5. High-permeability grain-oriented silicon steel sheets, multi-level joints, low noise; Protection level: IP00 (outdoor transformer substations can reach IP30 or higher).
6. Windings: All copper, high-voltage cylindrical type, low-voltage foil/cylindrical type, uniform oil channels, strong short-circuit resistance.
7. Applicable scenarios: Suitable for urban and rural power grids, industrial plants, commercial buildings, new energy supporting facilities, and other diverse scenarios.
8. Standardized design; special requirements can be customized.
Product Description
S18 Type Oil-Immersed Distribution Transformer
The S18 type oil-immersed distribution transformer from Lijie Electric Power Technology Group delivers first-class energy efficiency with proven performance. Manufactured at our two state-of-the-art bases spanning 500,000 square meters, this transformer features ultra-low losses, fully sealed corrugated tank design, and a remarkable 30-year service life. With capacity ranging from 30-3150kVA and noise reduction through 0.23mm grade silicon steel sheets, you'll benefit from 24-hour uninterrupted power supply backed by over 160 engineers and 5 billion RMB in annual sales expertise.
Why Choose Our Oil-Immersed Distribution Transformers?
Energy-Saving Performance You Can Measure
Your electricity costs matter. That's why our transformers use high-permeability cold-rolled grain-oriented silicon steel sheets. The 0.23mm grade material with fully oblique joints reduces core losses significantly. You'll notice the difference in your monthly energy bills.
The fully sealed corrugated oil tank eliminates the traditional oil conservator. This means the internal oil stays completely isolated from atmospheric moisture. Your transformer oil ages much slower, extending equipment lifespan naturally.
Built for Continuous Operation
You need power that doesn't quit. Our design supports 24-hour uninterrupted operation in demanding environments. The ONAN oil-immersed self-cooling method maintains optimal temperature without external intervention.
The all-copper windings feature high-voltage cylindrical configuration and low-voltage foil construction. Uniform oil channels ensure excellent heat dissipation. This robust design withstands short-circuit events effectively, protecting your investment.
Quiet, Maintenance-Free Operation
Nobody wants a noisy transformer humming near their facility. Multi-level joints and high-permeability silicon steel keep operational noise low. Your neighbors will appreciate the difference.
The fully sealed structure requires no core lifting and zero routine maintenance. Once installed, the product works reliably year after year. This is especially valuable for remote locations where maintenance visits are costly and time-consuming.
Technical Specifications
| Parameter | Specification |
|---|---|
| Voltage Level | 6kV, 12kV |
| Capacity Range | 30-3150kVA |
| Frequency | 50Hz / 60Hz |
| Phase Configuration | Single-phase / Three-phase |
| Voltage Regulation | Non-excitation, ±5%, ±2×2.5% |
| Connection Group | Yyn0 or Dyn11 |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Design Life | ≥30 years |
| Insulation Level | AC 35kV / Impulse 75kV |
| Protection Level | IP00 (IP30+ available for outdoor substations) |
| Standards Compliance | GB/T 6451, GB 20052 |
Where You Can Use These Transformers
Your application decides your control needs. Our oil-immersed transformers serve different scenarios effectively:
Urban and Country Systems: Culminate for State Framework and China Southern Control Lattice update ventures. Whether you're modernizing maturing framework or building unused conveyance lines, these units provide solid performance.
Industrial Offices: Fabricating plants, mining operations, and generation workshops advantage from high-load capacity and nonstop operation capability.
Commercial Buildings: Shopping shopping centers, office complexes, private communities, schools, and healing centers require calm, solid control. The low-noise plan makes these transformers perfect for populated regions.
Renewable Energy Systems: Supporting wind farms and photovoltaic installations with stable grid connection. The S18 type oil-immersed distribution transformer handles variable loads from renewable sources smoothly.
Remote Locations: Islands, mountainous regions, and rural areas where maintenance access is limited. The maintenance-free design ensures long-term reliability without frequent service visits.
Certifications and Quality Assurance
Your venture merits certified quality. All our transformers experience thorough testing by the National Transformer Quality Supervision and Review Center. We hold ISO 9001:2015, CE, UL, and IEC certifications for voltage levels up to 35kV.
Energy proficiency certification from CQC and PCCC affirms our first-class vitality productivity rating. We meet GB/T 27922-2021 after-sales benefit assessments, guaranteeing you get benchmark progressing support.
Customization and Delivery
Standard details cover most applications. In any case, if your venture has uncommon prerequisites, we can customize transformers to your correct details. Our generation cycles extend from 6-30 days depending on complexity.
We give total specialized documentation counting drawings, operation manuals, and test reports. Establishment direction and save parts supply guarantee smooth commissioning and long-term operation.
FAQ
Q: What's the difference between S18 and older transformer models?
A: The S18 features significantly lower losses, improved energy efficiency, and a fully sealed corrugated tank design. Older models often use oil conservators that expose oil to atmospheric moisture, reducing lifespan.
Q: How long can these transformers operate without maintenance?
A: The fully sealed design eliminates routine maintenance requirements. With a 30-year design life, your transformer operates reliably without core lifting or oil changes under normal conditions.
Q: Can these transformers handle outdoor installation?
A: Absolutely. With IP30 or higher protection available for outdoor substations, they withstand harsh weather conditions. The sealed structure prevents moisture ingress effectively.
Q: What capacity should I choose for my facility?
A: Capacity selection depends on your total load and future expansion plans. Our technical team can help you calculate the optimal capacity based on your specific requirements. Contact us with your load specifications for personalized recommendations.
Q: Do you ship internationally?
A: Yes. We export to Australia, New Zealand, India, Vietnam, Malaysia, Indonesia, Kazakhstan, Egypt, Kenya, and many other countries. We handle export documentation and logistics coordination.
Q: What warranty coverage do you provide?
A: We offer comprehensive warranty coverage with after-sales support. Specific warranty terms vary by project scope and requirements. Our service team provides technical assistance throughout your transformer's operational life.
Contact Us
Reach out to our team at lijieelectrical@gmail.com for technical consultation, customized solutions, and competitive quotes for S18 type oil-immersed distribution transformer today.
YOU MAY LIKE
S13 type on-load automatic capacity adjustment distribution transformer
S20 Type Fully Sealed Power Transformer
S13 type single-phase distribution transformer
S11 type three-phase oil-immersed distribution transformer
S18 type fully sealed distribution transformer
S22 type 20kV power transformer
S18 type distribution transformer
