Can a substation transformer be stored outside?

If you plan to store a unit substation-type transformer outdoors, check with the manufacturer to ensure that the gauges and bushings are UV-rated. If the substation transformer was designed for indoor use, the bushings and gauge face plates might not be rated for long-term storage in direct sunlight.

How do you store a transformer?

For long-term storage, keep the transformer dry and properly ventilated. This is best done in a temperature controlled building. Space heaters and/or desiccant packets help remove moisture inside of an enclosure. Make sure you check the packets during regular maintenance intervals.

Can a liquid filled transformer be stored outside?

Environmental implications: Liquid-filled transformers are big tanks filled with oil. You need to understand the environmental and insurance implications of having that much oil stored indoors in the event of a leak or a fire. One last thing to consider when storing transformers outdoors has to do with unit substation style transformers.

How do you store a dry-type transformer?

Follow the checklist below to properly store your dry-type transformers: Dry-type windings are more susceptible to moisture (due to the vented enclosure). For long-term storage, keep the transformer dry and properly ventilated. This is best done in a temperature controlled building.

Can a padmount transformer be stored outside?

Padmount and substation transformers are designed for outdoor installation. Their sealed tank makes for simpler storage and maintenance. There are four keys to storing liquid-filled transformers: Let’s open up these four points a bit more Padmount transformers stored outside in Maddox's Battle Ground, WA yard.

How long can you store a dry-type & sealed liquid-filled transformer?

Ventilated dry-type and sealed liquid-filled transformers need long-term storage plans. You can store them both for extended periods, but the maintenance for each varies. Let’s break down in greater detail the how for both types of transformers. Padmount and substation transformers are designed for outdoor installation.