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C9-17

Current

Current

The latest, up-to-date edition.

Dry-type transformers

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2017

Preface
1 Scope
2 Reference publications
3 Definitions
4 Type classifications
5 Mechanical features
6 Marking
7 Electrical features
8 Tests
Annex A (informative) - Guideline for application, installation, and
        maintenance of dry-type transformers
Annex B (informative) - Guideline for overvoltage and overcurrent
        protection of dry-type transformers
Annex C (informative) - Guideline for interpretation of voltage and
        current oscillograms
Annex D (informative) - Comparison of enclosures for indoor and
        outdoor non-hazardous locations

Pertains to single phase and polyphase dry-type transformers, including those with cast or resin encapsulated coils, that are within the limits of the electrical ratings, and that are intended for use in accordance with the service conditions for dry-type transformers.

DocumentType
Standard
ISBN
978-1-4883-0863-5
Pages
54
PublisherName
Canadian Standards Association
Status
Current
Supersedes

Preface This is the fifth edition of CSA C9, Dry-type transformers. It supersedes the previous editions published in 2002, 1981, 1977, and 1966. Changes in this edition include the following: a) updates to insulation voltage classes and dielectric tests; b) updates to Annex D (Comparison of enclosures for indoor and outdoor non-hazardous locations); and c) alignment of average audible sound level with current industry practices. Scope 1.1 This Standard applies to single phase and polyphase dry-type transformers, including those with cast or resin encapsulated coils, that are within the limits of the electrical ratings specified in Clauses 7.2 and 7.3, and that are intended for use in accordance with the service conditions for dry-type transformers specified in Annexes A and B. Notes: 1) For information on the loading of dry-type transformers, see IEEE C57.96. 2) For additional requirements for dry-type transformers in accordance with the Canadian Electrical Code, Part II, see CSA C22.2 No. 47. 1.2 This Standard deals with the standardization of voltage ratings, kVA capacities, other electrical features, certain mechanical features, and test procedures. 1.3 This Standard does not apply to transformers designed solely for test purposes, rectifier transformers, welding transformers, furnace transformers, instrument transformers, motor-starting autotransformers, or any other special purpose transformers. 1.4 In this Standard, the word \"transformer\" refers to a dry-type transformer, unless otherwise specifically stated. 1.5 In this Standard, \"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; and \"may\" is used to express an option or that which is permissible within the limits of the Standard. 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.

CSA C9.1 : M81(R2001) GUIDE FOR LOADING DRY-TYPE DISTRIBUTION AND POWER TRANSFORMERS
CSA C802.4 : 2013 GUIDE FOR KVA SIZING OF DRY-TYPE TRANSFORMERS, 1.2 KV CLASS, SINGLE-PHASE AND THREE-PHASE
CSA C22.2 No. 250.13 : 2017 LIGHT EMITTING DIODE (LED) EQUIPMENT FOR LIGHTING APPLICATIONS
CSA C22.3 No. 61936-1 : 2008 : R2015 POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
CSA C71.1 : 1999 INSULATION CO-ORDINATION - PART 1: DEFINITIONS, PRINCIPLES AND RULES
CSA C22.3 No. 61936-1 : 2008 POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
CSA C22.2 No. 47 : 2013 AIR-COOLED TRANSFORMERS (DRY TYPE)
CSA C802.2 : 2012 MINIMUM EFFICIENCY VALUES FOR DRY-TYPE TRANSFORMERS
CSA C802.2 : 2012 : INC : UPD 1 : 2013 MINIMUM EFFICIENCY VALUES FOR DRY-TYPE TRANSFORMERS
CSA C802.2 : 2012 : R2017 MINIMUM EFFICIENCY VALUES FOR DRY-TYPE TRANSFORMERS

IEEE C57.12.01-2015 REDLINE IEEE Standard for General Requirements for Dry-Type Distribution and Power Transformers
NEMA 250 : 2014 ENCLOSURES FOR ELECTRICAL EQUIPMENT (1000 VOLTS MAXIMUM)
IEEE C57.96-2013 IEEE Guide for Loading Dry-Type Distribution and Power Transformers
IEEE C57.98-2011 IEEE Guide for Transformer Impulse Tests
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
IEEE C57.12.70-2011 IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers
IEEE C57.12.91-2011 IEEE Standard Test Code for Dry-Type Distribution and Power Transformers
CSA C22.2 No. 47 : 2013 AIR-COOLED TRANSFORMERS (DRY TYPE)
IEEE C57.110-2008 REDLINE IEEE Recommended Practice for Establishing Liquid-Filled and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents
CSA C22.2 No. 94.2 : 2015 ENCLOSURES FOR ELECTRICAL EQUIPMENT, ENVIRONMENTAL CONSIDERATIONS

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