Maintenance onsite:

• Gasket replacement
• Replacement of protective relays
• Complete oil treatment
• Diverter switch revision:
  - MR, all models
  - ASEA/ABB, all models
  - NI (san), all models
• DGA oil sampling
• Overall cleaning
• Onsite diagnostic measurements
  - Ratio, windings resistance, Tan/Delta, FRA, Insulation test megger