IEEE C57.12.38-2014/Cor 1-2016

C57.12.38-2014/Cor 1-2016 is a corrigendum for phase distribution transformers rated 250 kVA and smaller, covering high voltage up to 34 500 GrdY/19 920 V and low voltage up to 480/240 V. It is relevant to power, energy, and industrial applications where transformer design details must be clear and consistent. This document addresses Figure 1A corrections, helping engineers, buyers, and reviewers rely on the intended technical information in the base standard.

About C57.12.38-2014/Cor 1-2016

This technical document functions as a correction to C57.12.38-2014 and is focused on the phase distribution transformer scope defined in the subtitle. In practice, a corrigendum is used to clarify or amend specific content without replacing the full standard. For C57.12.38-2014/Cor 1-2016, the emphasis is on Figure 1A, so users working with ratings, drawings, and compliance documentation can align their interpretation with the corrected information.

Where is C57.12.38-2014/Cor 1-2016 used?

This standard is used in the specification and review of smaller phase distribution transformers for electrical distribution systems, especially where voltage limits and nameplate ratings must match the documented requirements. It is relevant to utility equipment, industrial power distribution, and procurement or engineering workflows that depend on accurate transformer figures. C57.12.38-2014/Cor 1-2016 is most useful when confirming design details, dimensional references, or diagram-based requirements tied to the transformer class covered by the base standard.

Importance in practice

In practice, the corrigendum helps reduce errors in interpretation and supports consistent application of the corrected figure during design, testing, and purchasing. For equipment that must operate within defined high- and low-voltage limits, small documentation changes can affect compliance checks and engineering decisions. Using C57.12.38-2014/Cor 1-2016 alongside the base document can improve technical consistency, avoid misunderstandings in specifications, and support more reliable review of transformer requirements.

• Corrected Figure 1A reference
• Phase distribution transformers
• 250 kVA and smaller ratings
• High- and low-voltage limits
• Design and compliance review