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Drying of Core and Coil Assembly for Dry Type Transformers

If it is necessary to dry out a transformer before installation or after an extended shut down under relatively high humidity conditions, one of the following methods may be used:

1. External heat
2. Internal heat
3. External and internal heat
4. Determining Drying Time

Of the three methods, the first is the preferred method.

Before applying any of these methods, free moisture should be blown or wiped off of the windings to reduce the time of the drying period.

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Park Ohio Holdings
Control Transformer, Inc., 3701 Warren Meadville Road, Cortland, OH 44410
Phone (330) 637-6015, Fax (330) 637-2180
email sales@control-transformer.com
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