S11-M-30 Series Fully Sealed Distribution Oil-Immersed Power/Electrical Transformer

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: S11-M-30
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001
• Usage: Power Transformer, Distribution Transformer
• Frequency Characteristics: Low Frequency
• Shape of Core: OD
• Brand: Jecsany
• Transport Package: Pallet
• Specification: S11-M-30
• Trademark: Jecsany
• Origin: China
• HS Code: 8535309000
• Production Capacity: 50000pieces/Year

Product Description

PRODUCT DESCRIPTION:

Oil immersed transformer is a new type of high-performance transformer with a more reasonable structure and better performance. Its three-dimensional coiled iron core, due to the equilateral triangle arrangement of its three core columns, has no air gap in its magnetic circuit and is wound more tightly. The length of the three magnetic circuits is the same and the shortest, and the cross-sectional area of the core columns is closer to a circle. Therefore, the performance is further improved, the loss is reduced, the noise is reduced, the three aspects are balanced, and the third harmonic component is reduced. This product is more suitable for urban and rural, industrial and mining enterprise power grid transformation, and is more suitable for combination transformers and prefabricated substation transformers.

The S11-M-30 series is a cutting-edge, fully sealed oil-immersed distribution transformer designed for superior energy efficiency and reliable power transmission in diverse industrial and commercial applications. Engineered with advanced amorphous alloy core technology, this transformer series delivers exceptional performance while meeting stringent international energy conservation standards.

Key Features:
1.Sealed Tank Design 
   Features a maintenance-free, fully sealed structure that eliminates oil-air contact, preventing oxidation and moisture ingress for enhanced insulation longevity.  

2. High Efficiency & Low Loss
   Utilizes high-quality grain-oriented silicon steel cores and precision-wound copper windings to achieve up to 98.5% efficiency, significantly reducing no-load and load losses compared to conventional models.  

3. Enhanced Safety
   Integrated pressure relief device and corrosion-resistant tank ensure safe operation under extreme conditions. Meets IEC 60076 standards for short-circuit resistance and thermal stability.  

4. Environmentally Optimized
   Fully compliant with RoHS directives, using biodegradable insulating oil and recyclable materials for reduced environmental impact.  

5. Robust Construction 
   Weatherproof IP55-rated enclosure with anti-vibration design enables reliable outdoor installation in harsh environments (-40°C to +40°C).  

Applications:  
Urban power distribution networks  
Industrial parks and mining facilities  
Renewable energy systems integration  
Commercial complexes and infrastructure projects  

Technical Advantages: 
- 30-2500 kVA capacity range  
- Voltage classes: 11kV/33kV (customizable)  
- ≤55 dB low-noise operation  
- 20% overload capacity for emergency scenarios  

technical parameters:

Rated Capacity KVA	Voltage Combination			Connection Symbol	Off-load Loss(W)	Short Circuit Impendence(%)	Impendence(%)
	High Voltage (kV)	Tapping Range(%)	Low Voltage (kV)
30	6 6.3 10 10.5 11	±5 ±2x2.5	0.38 0.4 0.415 0.433	Dyn11 Yyn0	90	2.1	4
50					120	2
63					140	1.9
80					170	1.8
100					200	1.6
125					235	1.5

DETAILS:
 

ABOUT US:
Jecsany Electrical Equipment Co., Ltd. was established in 2009, and it is backed by China Electric Porcelain Import and Export Co Ltd.   Since 1981, the company has focused on the research and development, manufacturing and export of professional high-voltage power products, and has accumulated profound technical background and rich industry experience in this field, and has built a reputation for delivering high-quality products and exceptional service to our clients.

Moreover, the company gives full play to its own R&D and production experience advantages, and strives to cultivate a professional team that can match products with the fastest speed and highest accuracy.   At present, the company has professional teams engaged in the power industry in South Africa, USA, South America, Vietnam and other places.

After years of development, the company has gradually become a professional supplier of diversified products including Power Transformers, Auto-Reclosers, Vacuum circuit breakers, Lightning arresters, Line protection devices, Switchgears, Fuse cutouts, Polymer / Glass / Porcelain insulators, Power line fittings and Tools, etc.   Jecsany can provide customers with one-stop full-service from product development, design, manufacturing to transportation, installation and after-sales service.

Jecsany Team is the backbone of our success, and we are dedicated to fostering a work environment that encourages innovation, collaboration, and continuous improvement.   We are constantly investing in our facilities and technology to ensure that we stay at the forefront of the industry, delivering high-quality products and services that exceed expectations.