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CSA C199:08 (R2022)

Current Reaffirmation

Three-phase network distribution transformers

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Three-phase network distribution transformers
Preface This is the third edition of CSA C199, Three-phase network distribution transformers . It supersedes the previous editions published in 1982 and 1970 under the title Three-Phase Network Transformers. This Standard includes updated electrical and mechanical requirements that reflect current practice. Transformer enclosure finish is one of the key areas that have been updated. This Standard was prepared by the Subcommittee on Network and Submersible Distribution Transformers, under the jurisdiction of the Technical Committee on Distribution Transformers and the Strategic Steering Committee on Power Engineering and Electromagnetic Compatibility, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 This Standard specifies the mechanical and electrical characteristics of three-phase network distribution transformers having rated primary voltages up to 34.5 kV and kV-A ratings of 500 to 2500 Note: It is possible that transformers complying with this Standard will, if operated by a body other than an electric utility, be subject to additional requirements imposed by the electric inspection authority having jurisdiction. 1.2 This Standard applies only to three-phase distribution transformer units intended for use in a ventilated vault or enclosure below grade level. 1.3 The equipment covered by this Standard is primarily intended for operation by electric utilities on effectively grounded underground distribution systems. 1.4 In CSA Standards, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

SDO CSA: Canadian Standards Association
Document Number
Publication Date Aug. 11, 2022
Language en - English
Page Count
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Aug. 11, 2022 Reaffirmation