IEEE Std C57.12.01:2020 REDLINE pdf download.IEEE Standard for General Requirements for Dry-Type Distribution and Power Transformers.
IEEE Std C57.12.01 describes electrical and mechanical requirements of single and polyphase ventilated, non-ventilated, 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 dry-type transformers, including those with solid-cast and/or resin encapsulated windings except as follows:
a) Instrument transformers
b) Step- and induction-voltage regulators
c) Arc-furnace transformers
d) Rectifier transformers
e) Specialty and general-purpose transformers
f) Mine transformers
g) Testing transformers
h) Welding transformers
NOTE—Where IEEE standards do not exist tor the transiormers mentioned above or for other special transformers, this standard may be applicable as a whole or in parts subject to agreement between the parties responsible for the application and for the design of the transformer.
1.2 Purpose
This standard is intended to serve as a basis for the establishment of performanceL and interchangeability requirements of equipment described, and for assistance in the proper selection of such equipment.
1.3 Word usage
When this standard is used on a mandatory basis, The word shall indicates mandatory requirements strictly to he followed in order to conform to the standard and from which no deviation is peitted
(shall equals is required to).he words hould and mat, refer to matters that arc recommended or permissive but not mandatory.
The word should indicates that among several possibilities one is recommended as particularly suitable, without menfiong or excluding others; or that a certain course of action is preferred hut not necessarily required .
The word may is used to indicate a flurse of action permissible within the limits of the stanJ (may equals is permitted to).
Notes in text, tables, and figures are given for information only and do not contain requirements needed to implement the standard.
IEEE Std C57.12.7O, IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers.
IEEE Std C57.12.8OTM, IEEE Standard Terminology for Power and Distribution Transformers.
IEEE Std C57.12.9ITM, IEEE Standard Test Code for Dry-Type Distribution and Power Transformers.
IEEE Std C57.96TM, IEEE Guide for Loading Dry-Type Distribution and Power Transformers.
IEEE Std C57.11O, IEEE Recommended Practice for Establishing Liquid-Immersed and Dry-Type Pover and Distribution Transformer Capabi1ity When Supplying Nonsinusoidal Load Currents.
IEEE Std C57.124, IEEE Recommended Practice for the Detection of Partial Discharge and the Measurement of Apparent Charge in Dry-Type Transformers.IEEE Std C57.12.01 pdf download.