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Runner Transformer Product List

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2026 Top Runner Transformer (Oil-immersed Transformer, Molded Transformer)

Highly efficient and excellent in energy-saving performance, contributing to decarbonization and reduction of electricity costs. High-efficiency transformers manufactured by Daihen that meet the third judgment criteria of the Top Runner Transformer program.

The TOP ECO 3 Series (oil-filled transformers and molded transformers) utilizes high-grade silicon steel sheets to reduce power loss, making it a highly efficient transformer manufactured by Daihen that meets the third judgment criteria for top-runner transformers, which require high energy consumption efficiency. It excels in high efficiency and energy-saving performance, contributing to our customers' decarbonization efforts and reduction in electricity costs through improved energy efficiency. Additionally, we offer transformers for data centers and storage facilities, providing optimal transformers tailored to our customers' applications and needs. We handle everything from proposals to installation work (equipment renewal projects) in-house. Sanmei Co., Ltd. is an authorized distributor (trading company and system integrator) of Daihen Co., Ltd.

  • Transformers
  • Runner Transformer

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Palm oil fatty acid ester oil top runner transformer

In case of an oil leak, you can rest assured! We use insulating oil with excellent oxidation stability and dielectric breakdown voltage.

Introducing the "Air-Sealed Palm Oil Fatty Acid Ester Oil Top Runner Transformer." The air-sealed type is a standard oil deterioration prevention method for Top Runner Transformers. It features a simple structure that makes maintenance easy. Additionally, we have used palm oil fatty acid ester (PFAE) oil, which is plant-derived and environmentally friendly, as an insulating oil alternative to fossil fuels. 【Features】 ■ Simple structure ■ Easy maintenance ■ Adoption of palm oil fatty acid ester (PFAE) *For more details, please refer to the PDF document or feel free to contact us.

  • Transformers
  • Runner Transformer

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Oil-filled top runner transformer

Significantly reduced power loss, meeting the top runner energy-saving standards! A compact, earthquake-resistant, and quiet oil-filled transformer for civilian use.

This is an oil-filled transformer for civil demand, widely used in factories, buildings, and commercial facilities. <Features> ■ Improved energy efficiency By fully adopting high-grade low-loss magnetic materials "silicon steel sheets" for the core and increasing the cross-sectional area of the coil conductors, we have achieved significant loss reduction. Total loss reduction amount (compared to our conventional products)   TOP ECO2 series: approximately 47% reduction, ULTRA ECO series: approximately 57% reduction  * For a three-phase 1000kVA 6kV/210V 50Hz at 50% load rate ■ Enhanced seismic performance By equipping a displacement suppression seat that limits the relative displacement between the transformer body and the panel housing, we prevent ground faults and short-circuit accidents at the transformer terminal during an earthquake. The installation of a damping device further enhances seismic performance. ■ Compact design ■ Reduced noise level

  • Transformers
  • Runner Transformer

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