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transformer mothball- keep in place for a few months

transformer mothball- keep in place for a few months

transformer mothball- keep in place for a few months

(OP)
Hello All,

 I'm trying to find transformer mothball ( keep in place ,not use for a few months) procedure, Could anyone suggest me the standard or procedure about that?  My application is distribution transformer 1600kVA- 22kV/400V.

Thanks for every suggestion.
PAP

RE: transformer mothball- keep in place for a few months

You need to keep the humidty out, A heater strip or even a light bulb will keep the internal temp higher than the outside. If you wrap it be sure to have a vent, but you will want to keep out nesting criters.

There are some procedures for this on the ABB site.

RE: transformer mothball- keep in place for a few months

Connect shorts between primary and secondary phases, then connect to ground.

RE: transformer mothball- keep in place for a few months

Be sure to place a nitrogen blanket on the unit. Also keeps out moisture with out a heat source. For an extended period of out of service. Drain oil, and blanket with nitrogen. SphincterBoy has the other precaution covered ground all bushings.

RE: transformer mothball- keep in place for a few months

Obviously, there are varying suggestions depending on whether you have a dry-type or liquid-filled transformer, as seen in the responses.

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