NEMA TR 1
Transformers, Step Voltage Regulators and Reactors
|Publication Date:||1 January 2013|
This Standards publication applies to single phase and polyphase power and distribution transformers (including step-voltage regulators and reactors). This Standard excludes dry type transformers covered by NEMA ST20. This publication provides a reference list of applicable ANSI and IEEE C57 Standards.
In addition, this publication includes certain NEMA Standard test methods, test codes, properties, etc. of liquid-immersed transformers, step-voltage regulators, and reactors that are not IEEE Standards.