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 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.
9. Standardized design; special requirements can be customized.
Product Description
S18 Type Distribution Transformer: Next-Generation Energy-Efficient Power Solution
Lijie Electric's S18 type distribution transformer delivers enterprise-grade performance with proven energy efficiency. Our fully sealed design achieves ultra-low losses while eliminating routine maintenance requirements. With a design life exceeding 30 years, annual operating capability of 8,760 hours, and Class A energy efficiency rating, this transformer serves voltage levels from 6kV to 12kV with capacity ranging from 30kVA to 3,150kVA. Backed by our 500,000-square-meter manufacturing facilities and 160+ engineering professionals, we ensure every unit meets rigorous national standards before delivery.
What Makes Our Fully Sealed Transformer Different?
You need equipment that works reliably without constant attention. That's exactly what our sealed oil-immersed transformer provides.
The corrugated oil tank design completely isolates transformer oil from air and moisture. This means your insulation system stays clean and effective for decades. No oil conservator. No core lifting. No maintenance headaches.
High-permeability cold-rolled grain-oriented silicon steel sheets (0.23mm grade) form the core foundation. We use fully oblique joints without punching to minimize noise and losses. You get quieter operation and lower energy bills.
The copper windings feature cylindrical high-voltage design and foil/cylindrical low-voltage configuration. Uniform oil channels distribute heat effectively, giving you exceptional short-circuit resistance when you need it most.
Technical Specifications
| Parameter | Specification |
|---|---|
| Voltage Level | 6kV, 12kV |
| Capacity Range | 30-3150kVA |
| Frequency | 50Hz, 60Hz |
| Number of Phases | Single-phase, Three-phase |
| Voltage Regulation | Non-excitation, ±5%, ±2×2.5% |
| Connection Group | Yyn0 or Dyn11 |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Insulation Level | Power frequency 35kV AC, Impulse 75kV |
| Protection Level | IP00 (IP30+ for outdoor substations) |
| Design Life | ≥30 years |
| Operating Hours | 24-hour continuous supply |
| Operating Temperature | Max 40℃ outdoor (customizable) |
Where Can You Use This Transformer?
Our S18 type distribution transformer adapts to your specific needs:
Urban and Country Control Lattices: Dependable power dissemination for private communities and rural areas.
Industrial Plants: Unfaltering control supply for fabricating offices requiring reliable voltage.
Commercial Buildings: Secure, calm operation for shopping centers, office complexes, and hotels.
New Vitality Foundation: Idealize for sun based ranches, wind control stations, and charging facilities.
The adaptability expands past standard applications. Require uncommon setups? We customize parameters like impedance voltage, association bunches, and assurance levels to coordinate your working conditions.
Why Choose Lijie Electric?
You're not fair buying hardware. You're collaborating with a producer who gets it your challenges.
Our two R&D and fabricating bases in Xuzhou and Nantong span 500,000 square meters. Over 2,000 workers, counting 160+ doctoral and master's degree holders, work to provide quality you can trust.
Every transformer experiences comprehensive testing some time recently shipment: withstand voltage, fixing astuteness, misfortune estimation, and energetic warm soundness. We hold ISO 9001:2015, CE, UL, and IEC certifications. Our quality meets both national and worldwide standards.
Production cycles run 6-30 days depending on your details. We give total specialized documentation, establishment direction, save parts supply, and responsive after-sales support.
Our worldwide reach amplifies over Australia, Unused Zealand, India, Vietnam, Malaysia, Indonesia, Kazakhstan, Egypt, and Kenya. Wherever you work, we're prepared to serve.
Frequently Asked Questions
Q: What makes the S18 fully sealed design better than traditional transformers?
A: The sealed corrugated tank eliminates moisture and air contact with transformer oil. This prevents insulation degradation and removes maintenance requirements. You save on labor costs and extend equipment lifespan significantly.
Q: How energy-efficient is this transformer?
A: It meets Class A energy efficiency standards per GB 20052. High-permeability silicon steel cores and optimized winding design minimize losses. You'll see measurable reductions in your energy consumption and operating costs.
Q: Can you customize transformers for extreme environments?
A: Absolutely. We handle high-altitude installations, corrosive atmospheres, low-temperature zones, and flashover-prone areas. Share your specific requirements, and our engineers will design the right solution.
Q: What testing do transformers undergo before delivery?
A: Each unit passes withstand voltage testing, sealing verification, loss measurement, and thermal stability assessment. We provide complete test reports with your delivery documentation.
Q: What's included in your after-sales support?
A: You receive installation guidance, technical manuals, test reports, spare parts access, and ongoing technical consultation. Our team responds quickly to keep your operation running smoothly.
Ready to Upgrade Your Power Distribution?
Contact our technical team at lijieelectrical@gmail.com to discuss your specific requirements for S18 type distribution transformer and receive a customized solution.
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