The 35kV Three Phase Oil Distribution Transformer is engineered as a national-level high-tech energy-efficient product, with S11 and S13 series models representing significant advancements in reducing both no-load and load losses . These efficiency improvements translate directly into lower electricity consumption and reduced operational costs over the transformer's 20-30 year service life. For utilities and industrial facilities, selecting the appropriate loss level is a key economic decision that determines long-term return on investment.
The S11 series achieves no-load loss reductions of approximately 30% compared to conventional S9 designs, with no-load current decreasing by 45-80% . The S13 series offers even greater efficiency improvements, utilizing premium cold-rolled oriented silicon steel for the core and oxygen-free copper windings to minimize resistive losses . The S13 model incorporates an advanced insulation structure that enhances short-circuit tolerance while maintaining lower loss characteristics .
The core construction employs a high-permeability grain-oriented silicon steel with a step-lap joint design, reducing hysteresis and eddy current losses . The multilayered drum-type winding configuration for high-voltage windings optimizes current distribution and minimizes stray losses. All mechanical fasteners undergo anti-loosen treatment to ensure long-term stability and reliability under cyclic loading conditions .
Available capacity ratings range from 315kVA to 16,000kVA for S11 series, with no-load loss values starting at 0.61kW for 315kVA units and load loss (75°C) of 4.77kW . S13 series units provide even lower loss characteristics, meeting the latest GB20052-2020 energy efficiency standards. Both series maintain low sound levels, typically reducing noise by 3-5 decibels below national standards .
Therefore, for infrastructure and renewable energy projects requiring efficient 35kV power conversion, the S11 and S13 series transformers deliver proven energy savings and reliable performance. Putai also supports customization and the supply of related medium-voltage accessories to meet system integration needs. For assistance selecting the optimal loss level and capacity for your application, contact our technical team.
(Article content references network resources.)
English
Pусский
Español