S11 Series Oil-immersed Transformer
Contact us for best pricing
Jinxing Power’s S11 series oil-immersed transformer is engineered for outdoor and general industrial applications. With over 30% lower no-load loss than S9 series, 2-4dB lower noise output, and 30+ years of service life, it’s the ideal choice for power grids, commercial & industrial parks, new energy stations, and residential areas.
All units pass 100% full inspection at our provincial-level testing center before delivery, ensuring product reliability and peace of mind.
Core Features:
- 30% lower no-load loss than S9 series
- 2-4dB lower noise output for quiet operation
- 30+ years service life with minimal maintenance
- 100% full inspection before delivery
- CE / ISO9001 / ISO14001 certified
Reliable Power Distribution for Industrial Applications
The S11 series oil-immersed transformer is purpose-built to address the pain points of high operation costs and noise disturbance in conventional power grid distribution and industrial & commercial park power supply scenarios.
Its innovative core winding structure, low-loss silicon steel sheets, and optimized oil-cooling system deliver superior energy efficiency with minimal environmental impact.
Compliant with national energy efficiency standards, the S11 series has been adopted by utilities and EPC contractors across 30+ countries, serving power grid projects, renewable energy stations, mining operations, and large-scale commercial deployments.
High Efficiency
30% lower no-load loss, national level-1 energy efficiency compliant.
Low Noise
2-4dB(A) lower noise output, ideal for residential and urban deployment.
Certified Quality
CE / ISO9001 / ISO14001 certified, tested to IEC 60076 standards.
Global Support
Serving 30+ countries with 3-year warranty and lifetime maintenance.
Ready to Get Started?
Contact us today for a customized quote and professional technical support.
Technical Specifications
| Parameter | S11 Series Specification |
|---|---|
| Rated Voltage | 10kV / 35kV |
| Rated Capacity | 10 – 2,500 kVA |
| Phase | Three Phase |
| Frequency | 50Hz / 60Hz |
| Vector Group | Dyn11 / Yyn0 (customizable) |
| No-load Loss | 30% lower than S9 series |
| Load Loss | Compliant with GB/T 6451-2015 Level 11 |
| Protection Grade | IP65 (standard) |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Insulation Class | A (105°C) |
| Noise Level | ≤55 dB |
| Service Life | 30+ years |
| Certifications | ISO9001, ISO14001, ISO45001, CE |
Product Gallery
Every detail reflects our commitment to precision engineering and superior quality.
From Order to Delivery — Our Process
A transparent 6-step workflow, backed by certified quality and 15+ years of manufacturing expertise.
28,000 m²
Factory Area
12,000+ Units
Annual Capacity
CE / ISO9001
Certified
1 Set MOQ
4–8 Weeks Delivery
Order Confirmation
Technical docs & delivery confirmed within 2 working days
Engineering
Drawings issued for your approval before production starts
Manufacturing
Core winding, assembly & oil filling per strict process
Quality Testing
24+ performance tests, all reports archived for traceability
Packaging & Loading
Seaworthy wooden cases, FOB/CIF/DDP all supported
Shipping
BL, CI, PI, CO provided — smooth customs clearance
Quality Tests Performed
Every unit, before shipment
Compliance Standards
IEC & GB certified quality
IEC 60076
Power Transformers
GB 1094
National Standard
CE Certified
EU Compliance
Related Application Cases
Real-world success stories from global clients across power, mining, and renewable energy projects.
SCB18 Dry-type Transformers for Vietnam High-rise Project
A premium residential complex in Ho Chi Minh City required fire-safe indoor transformers with extremely low noise (under 42dB) and green-building certification compliance.
KBSG Mining Transformers for Inner Mongolia Coal Mine
A large coal mining operation required explosion-proof transformers certified to MA standards, capable of withstanding harsh underground conditions including methane gas and dust.
Hydroelectric Power Plant Equipment in Brazilian Amazon
Remote Amazon basin hydroelectric project required transformers transportable by river barge and assemblable on-site, with tropical climate tolerance and high humidity resistance.
Related Products
Other transformer models that may suit your application.
Get Your Free Quotation in 24 Hours
Tell us about your project requirements. Our technical team will respond within 24 hours with a detailed quotation — including unit pricing, lead time, and shipping options. No obligation, no pressure.
Quick Quote Request
Fill out a quick form and our team will respond within 24 hours with detailed pricing and lead times.
Your information is kept strictly confidential.