5. STORAGE
It is advisable to locate a transformer, complete with liquids in its permanent location even
if it will not be placed in service for some time. It is well to check the paint finish and to
repair all damaged painted surfaces. If the transformer is shipped and stored in dry inert
gas, the gas pressure should be maintained and periodically tested. If an oil-filled, indoor-
type transformer is stored outdoors it should be thoroughly covered to keep out rain.
A transformer should not be stored or operated in the presence of corrosive vapors or
gases, such as chlorine. If it becomes necessary to store accessories for a long period of
time, they should be stored in a clean, dry place or the manufacturer should be contacted
for explicit instructions on the storage of individual pieces.
WARNING!!!
Unless indicated otherwise storage temperature must be between -25C° and +50C°
Monitoring and checking the transformers during storage:
Preferably only fully assembled, liquid-filled transformers can be stored for a long period of
time. The following checks must be carried out during storage:
- Checking of the air breather, if fitted.
- The color of the silica gel must be orange.
- The level of the oil lock must be checked.
- The transformer must be checked for leaks.
- Check that there is no damage to the paint and that there is no rust.
Storage after taken out of operation; Before the transformer is stored, a full check as
described in the “Acceptance procedure” paragraph should occur.
Correct storage is client’s responsibility.
If any defects are established, they should either be remedied immediately or the
manufacturer should be informed as quickly as possible.
Ulusoy Distribution Transformers Maintenance, Operation, Installation and Instruction Manual
