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IEEE C57.12.01 - General Requirements for Dry-Type Distribution and Power Transformers
February 16, 2015 - IEEE

This standard describes electrical and mechanical requirements of single and polyphase ventilated, nonventilated, and sealed dry-type distribution and power transformers or autotransformers, with a voltage of 601 V or higher in the highest voltage winding. This standard applies to all...

ANSI C57.12.70 - Terminal Markings and Connections for Distribution and Power Transformers
January 1, 1978 - NEMA

This standard describes the terminal markings and connections for distribution and power transformers covered in American National Standards C57.12.00, C57.12.01, C57.12.10, C57.12.20, C57.12.21, C57.12.22, C57.12.23 C57.12.24, C57.12.25, C257.12.26, C57.12.30, and C57.12.40. This...

MIL-PRF-27/290 - TRANSFORMER, AUDIO FREQUENCY
March 17, 2017 - NPFC
A description is not available for this item.
MIL-PRF-27/165 - TRANSFORMER AUDIO FREQUENCY
November 1, 2016 - NPFC
A description is not available for this item.
MIL-PRF-27/134 - TRANSFORMER, POWER, STEP-DOWN
November 1, 2016 - NPFC
A description is not available for this item.
MIL-PRF-27/157 - TRANSFORMER POWER, STEPDOWN
November 1, 2016 - NPFC
A description is not available for this item.
MIL-PRF-27/103 - TRANSFORMER, AUDIO FREQUENCY
November 1, 2016 - NPFC
A description is not available for this item.
DS/IEC 551 - Measurement of transformer and reactor sound levels
DS

Defines methods by which sound levels of transformers, react ors and their associated cooling plant shall be measured in the manufacturer's works so that compliance with any specifi cation requirements may be confirmed and the characteristic of the noise emitted in service determined. The...

MIL-PRF-27/33 - TRANSFORMER, POWER, STEP-UP
February 2, 2016 - NPFC
A description is not available for this item.
IEEE C57.120 - Guide for Loss Evaluation of Distribution and Power Transformers and Reactors
February 14, 2017 - IEEE

This guide covers the economic loss evaluation of liquid-filled distribution and power transformers, dry-type distribution and power transformers, and reactors. Purpose The purpose of this guide is to provide a method of establishing the dollar value of the electric...

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