1000kVA 800kVA 400V 230V High Voltage Three Phase Electrical Oil Immersed Transformer Power Distribution Transformer

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: S 13/20/22-M series Oil-Immersed Transformer
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Capacity: 30kVA~20000kVA(20mva)
• Transport Package: Composite Board
• Trademark: CHBEB
• Origin: China
• HS Code: 8504220000
• Production Capacity: 10000pieces/Year
• Package Size: 230.00cm * 140.00cm * 220.00cm
• Package Gross Weight: 6550.000kg

Product Description

 

Product Description

 
The S -M Series Oil-Immersed Distribution Transformer is a state-of-the-art, three phase transformer developed to enhance reliability and performance over the S9 series.By refining loss coefficients and optimizing the copper-to-iron ratio, it achieves superior loss design and cost-effectiveness. The iron core utilizes high-conductivity, low-loss silicon steel, minimizing no-load losses.

    For high-voltage windings, a multi-layer structure is employed, with products up to 500kVA featuring multi-layer low-voltage windings. For transformers of 630kVA and above, a new spiral type for low-voltage windings is used, improving electrical performance and mechanical strength, especially during short circuits.
 

    A key feature is its pan-seal structure, which isolates the transformer oil from external air, preventing oil aging and enhancing operational reliability. The oil tank design uses corrugated plates to facilitate oil circulation and improve heat dissipation. This simple yet robust design ensures efficient welding, reduces the likelihood of leaks, and optimizes fluidity and thermal management.

 

Detailed Photos

The S-M series oil-immersed distribution transformers are high-performance transformers designed to deliver reliable, efficient power for modern networks. Filled with insulating oil and fully sealed in corrugated steel tanks, these transformers efficiently step down medium-voltage power (e.g. 10-35 kV) to low-voltage distribution levels (0.4 kV) for end-use. They are widely used across urban utility grids, industrial parks, commercial centers, and rural electrification projects

By combining robust construction with advanced engineering, the S-M series ensures stable operation in diverse environments - from dusty mining facilities to humid coastal substations - with minimal maintenance and long service life. In short, this product line provides the critical link in power delivery, bringing safe and steady electricity to factories, businesses, and communities.

The S-M series encompasses several major models - S11-M, S13-M, S20-M, and S22-M - each representing a new generation of efficiency and performance improvements. All models share common quality features like a hermetically sealed oil tank, high-grade copper windings, and state-of-the-art safety protections, yet each successive design introduces enhancements in loss reduction, noise control, and materials. Below we introduce each model and its key characteristics:

Why Choose the S-M Series?

Empowering your network with confidence - the S-M series oil-immersed distribution transformers offer a compelling blend of advantages for any power distribution project. Prospective clients and partners will find that this product line delivers significant energy savings, long-term cost reductions, and superior reliability.

 By upgrading to models like the S13-M, S20-M or S22-M, you can dramatically cut transformer losses (translating to lower electricity bills and greener operation) while also benefitting from a quieter and more compact unit that is easier to install in constrained spaces. The fully sealed, maintenance-minimized design means fewer worries about oil top-ups or environmental contamination; these transformers are built to run for decades with minimal intervention, all while maintaining high efficiency.

 In practical terms, choosing an S-M transformer is an investment in quality - the kind of robust engineering that reduces unplanned downtime and keeps critical facilities powered no matter what. 

Whether it's strengthening an urban grid, powering a fast-growing industrial park, or extending electricity to remote communities, the S-M series has a model tailored to your needs, each bringing state-of-the-art technology to ensure your power distribution is smooth, safe, and sustainable.

 In summary, the S-M series combines proven performance with modern innovation, making it the smart choice for those who demand excellence in their electrical 

Partner with us and let the S-M series transformers elevate your power network to new standards of efficiency and reliability. 

All data and claims are as per the latest available information and relevant standards, aimed at ensuring you have the best-in-class solution for your power distribution requirements.
 

Product Parameters

Certifications

 

 

Our Advantages

Advanced production equipment ensures the quality of our products.
CHBEB has invested heavily in high-tech machinery from Germany and the U.S., establishing modern production lines for stable, reliable quality. 

Our team actively participates in international power exhibitions, 
engaging directly with clients. We aim to bring CHBEB's products to the global market.