DS DS/EN 50464-4/A1
DS DSEN 50464-4A1 2012-JAN-10 Three-phase ol-mmersed dstrbuton transformers 50 Hz from 50 kVA to 2 500 kVA wth hghest voltage for equpment not exceedng 36 kV - Part 4 Requrements and tests concernng pressursed corrugated tanks
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This Part 4 of EN 50464 series is applicable to test procedures to verify the mechanical withstand capability of the corrugated tanks of completely oil filled and hermetically sealed distribution transformers.NOTE Variations of oil temperature due to variations of ambient temperature and loading, result in deformation of tank walls.