Motor Winding Heater for motor in storage

[tom baker]

I have two 50 hp 460 V motors that are spares, they will be stored in an unheated, but enclosed building.
Whats available for a motor winding heater to keep the windings dry?
These motors may not be installed for 25 years, they are for tunnel ventilation fans....

 

[Jlarson]

Get some heat trace cable and wrap the motors, should do the trick.

 

[eric9822]

Something like this?
http://www.thermaldevices.com/produ...ils.asp?id=775&subcategoryId=143&categoryId=7

 

[petersonra]

I have two 50 hp 460 V motors that are spares, they will be stored in an unheated, but enclosed building.
Whats available for a motor winding heater to keep the windings dry?
These motors may not be installed for 25 years, they are for tunnel ventilation fans....

Do they have heaters built in that can be powered up? I have seen strip heaters installed inside the j boxes.