a. ORDINARY MAINTENANCE
The cast resin transformers does not require a specific maintenance anyway in order to ensure a longer life we recommend to monitor his functioning and properties.
We recommend to perform the following actions at least once per year:
- Cleaning of HV and LV windings and cooling ducts from dust by means of dry compressed air jets and dry cloths.
- Dry the eventual condensation created nearby the transformer.
- Check of proper HV and LV connections tightening in accordance with Tab.5 and Tab.6
- Check the correct functioning of thermal protection.
b. EXTRAORDINARY MAINTENANCE
If the transformer is subject to a discontinues operation and has long off load times all the operations described on point 4 have to be performed again before first energization.