The new standard was officially implemented on June 1, 2021. All newly added transformers must meet the new energy efficiency requirements, with the minimum standard being the new third-level energy efficiency (S13 oil-immersed transformer).
The S22 transformer has excellent oil insulation and thermal conductivity, while the transformer oil is cost-effective.
It can address large-capacity heat dissipation and high-voltage insulation issues.
The S22 oil-immersed transformer is fully sealed, effectively preventing insulation oxidation and aging.
The S22 transformer core uses higher-quality silicon steel sheets, with increased core cross-sectional area, resulting in higher energy efficiency. The S22-630kVA saves over ten thousand kWh per year compared to S13-630kVA.
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