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UHVDC transformer maintenance Vacuum Charging Siemens

FIST 3-30 TRANSFORMER MAINTENANCE· PDF fileDRY TYPE TRANSFORMER MAINTENANCE SUMMARY See Section 3.1 When new after energizing and allowing temperature and loading to stabilize After 1 week of operation at normal loading ... Use vacuum to remove as much dirt as possible. After vacuuming, use low pressure dry air (20 to 25 psi) to blow off remaining dirt. Caution: Make sure air is dry.

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