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Dry Type Transformers for General Applications

NEMA > Standards > Dry Type Transformers for General Applications 

Status: Rescinded
NEMA ST 20-1992 (R1997)   

This standard has been rescinded and is no longer for sale on the NEMA website.
If needed, please contact IHS at (800) 854-7179, or (303) 397-7956 (outside the U.S.) to inquire about buying historical copies.

Note—NEMA approval of ST 20 has lapsed. An updated version is in the approval process and publication is expected in 2011.

 

Applies to single-phase and polyphase dry type transformers (including both autotransformers and noncurrent limiting reactors) for supplying energy to power, heating, and lighting circuits.

 

 


Electronic Copy
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