1、C22.2 No. 66.1-06(reaffirmed 2011)Low Voltage Transformers Part 1: General RequirementsUpdate No. 2C22.2 No. 66.1-06December 2013Note: For information about the Standards Update Service or if you are missing any updates, go to shop.csa.ca or e-mail techsupportcsagroup.org.Title: Low Voltage Transfor
2、mers Part 1: General Requirements originally published April 2006Revisions issued: Update No. 1 November 2012The following revisions have been formally approved and are marked by a vertical line in the margin on the attached replacement pages:Revised Title page, Copyright page, Preface, Clauses 3.2.
3、1, 12.3.3, and 26.3New Clause 11.5Deleted None Update your copy by inserting these revised pages.Keep the pages you remove for reference.CSA GroupCSA C22.2 No. 66.1-06First EditionUnderwriters Laboratories Inc.UL 5085-1First EditionLow Voltage Transformers Part 1: General RequirementsApril 17, 2006(
4、Title Page Reprinted: December 6, 2013)ANSI/UL 5085-1-2013Commitment for AmendmentsThis standard is issued jointly by the Canadian Standards Association (operating as “CSA Group”) andUnderwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standardmay be submitted
5、to CSA Group or UL at any time. Revisions to this standard will be made only afterprocessing according to the standards development procedures of CSA Group and UL. CSA Group andUL will issue revisions to this standard by means of a new edition or revised or additional pages bearingtheir date of issu
6、e.ISBN 1-55436-830-8 2006 CSA GroupAll rights reserved. No part of this publication may be reproduced in any form whatsoever without theprior permission of the publisher.This Standard is subject to periodic review, and suggestions for its improvement will be referred to theappropriate committee. To
7、submit a proposal for change, please send the following information toinquirescsagroup.org and include “Proposal for change” in the subject line: Standard designation(number); relevant clause, table, and/or figure number; wording of the proposed change; and rationalefor the change.To purchase CSA Gr
8、oup Standards and related publications, visit CSA Groups Online Store atshopcsa.ca or call toll-free 1-800-463-6727 or 416-747-4044.Copyright 2013 Underwriters Laboratories Inc.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standardshould be altered in any
9、 way. All of ULs Standards and all copyrights, ownerships, and rights regardingthose Standards shall remain the sole and exclusive property of UL.The most recent designation of ANSI/UL 5085-1 as an American National Standard (ANSI) occurredon December 6, 2013. ANSI approval for a standard does not i
10、nclude the Cover Page, TransmittalPages, Title Page (front and back), or the Preface.Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time.Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative StandardsDevelopment System (CSDS)
11、 at http:/.To purchase UL Standards, visit Comm 2000 at http:/m- call toll-free 1-888-853-3503.CONTENTSPreface .51 Scope .72 Definitions .83 General 93.1 Components .93.2 Reference Publications .103.3 Units of Measurement 10B4 Construction .10B5 Mechanical Assembly .10B6 Enclosures 136.1 General 136
12、.2 Nonmetallic enclosures .146.3 Enclosures specific environmental conditions .156.4 Mounting 156.5 Openings .166.6 Barriers for openings 176.7 Covers .177 Corrosion Resistance .188 Connections .208.1 General 208.2 Wiring terminals .208.3 Wire-binding screws and studs 208.4 Pressure terminal connect
13、ors .218.5 Leads 229 Internal Wiring .2210 Grounding .2211 Spacings and Insulation .2411.1 General .2411.2 Insulating material for mounting of low voltage live parts .2511.3 Coil insulation 2511.4 Insulation used in lieu of spacings 2611.5 Double insulation .2812 Switches, Protective Devices, and Wi
14、ring Devices 2812.1 General .2812.2 Switches 2812.3 Protective devices 28A13 Current-Carrying Parts .28A14 Cord-Connected Transformers 28B15 Strain Relief 28B16 Bushings for Low Voltage Wiring .2917 Markings .3117.1 General .3117.2 Miscellaneous .3218 Tests 3319 Insulating Barriers Test 3420 Pullout
15、, Bending, and Twisting Tests .3421 Bonding Conductor Test .3422 Moisture Absorption Test 3523 Hot, Flaming Oil Test 35DECEMBER 6, 2013 CSA C22.2 NO. 66.1-06 UL 5085-1 324 Enclosure Tests 3624.1 General .3624.2 Compression test .3624.3 Outlet box cover support and impact tests .3724.4 Polymeric encl
16、osure impact test .3725 Induced Potential .3826 Temperature (Heating) Test 38Annex A (Informative)A1 Production Line Dielectric Voltage Withstand Test 52A2 Production Line Grounding Continuity Test 53Annex B (Informative)B1 Component Standards 54Annex C (Informative)C1 French Translation of Markings
17、 55DECEMBER 6, 2013CSA C22.2 NO. 66.1-06 UL 5085-14PrefaceThis is the harmonized CSA Group and UL standard for low voltage transformers. It is the first edition ofCSA C22.2 No. 66.1 and the first edition of UL 5085-1. This harmonized standard has been jointly revisedon December 6, 2013. For this pur
18、pose, CSA Group and UL are issuing revision pages dated December6, 2013.This harmonized standard was prepared by a Technical Harmonization Committee comprised of membersfrom CSA Group, Underwriters Laboratories Inc. (UL), and representatives of the low voltage transformermanufacturing industry. The
19、efforts and support of members of the Technical Harmonization Committeeare gratefully acknowledged.This Standard is considered suitable for use for conformity assessment within the stated scope of theStandard.This standard was reviewed by the CSA Subcommittee on C22.2 No. 66, under the jurisdiction
20、of the CSATechnical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirementsfor Electrical Safety, and has been formally approved by the CSA Technical Committee.This Standard has been approved by the American National Standards Institute (ANSI) as an AmericanNational
21、 Standard.Where reference is made to a specific number of samples to be tested, the specified number is to beconsidered a minimum quantity.Note: Although the intended primary application of this standard is stated in its scope, it is important to note that it remainsthe responsibility of the users o
22、f the standard to judge its suitability for their particular purpose.Level of harmonizationThis standard uses the IEC format but is not based on, nor is it to be considered equivalent to, an IECstandard. This standard is published as an equivalent standard for CSA Group and UL.An equivalent standard
23、 is a standard that is substantially the same in technical content, except as follows:Technical national differences are allowed for codes and governmental regulations as well as thoserecognized as being in accordance with NAFTA Article 905, for example, because of fundamental climatic,geographical,
24、 technological, or infrastructural factors, scientific justification, or the level of protection thatthe country considers appropriate. Presentation is word for word except for editorial changes.Reasons for Differences from IECThe Technical Harmonization Committee identified the following IEC Standa
25、rd within the scope of thisstandard: IEC 61558-1 (1998-07), Safety of power transformers, power supply units, and similar - Part 1:General requirements.The THC determined that the safe use of transformers and reactors is critically dependent on the electricalsystem in which they are intended to be i
26、nstalled. Significant investigation is required to assess safety andsystem compatibility issues that may lead to harmonization of traditional North American transformers andreactors with those presently addressed in the known IEC standards. The THC agreed such futureinvestigation might be facilitate
27、d by completion of harmonization of North American standards fortransformers and reactors.DECEMBER 6, 2013 CSA C22.2 NO. 66.1-06 UL 5085-1 5InterpretationsThe interpretation by the standards development organization of an identical or equivalent standard isbased on the literal text to determine comp
28、liance with the standard in accordance with the proceduralrules of the standards development organization. If more than one literal interpretation has been identified,a revision is to be proposed as soon as possible to each of the standards development organizations tomore accurately reflect the int
29、ent.CSA Group Effective DateThe effective date for CSA Group will be announced through CSA Informs or a CSA Group certificationnotice.UL Effective DateThis Standard is now in effect.PartsThe Standard for Low Voltage Transformers is divided into the following parts:Part Number Standard Title Standard
30、 Number1 General Requirements CSA C22.2 No. 66.1/UL 5085-12 General Purpose Transformers CSA C22.2 No. 66.2/UL 5085-23 Class 2 and Class 3 Transformers CSA C22.2 No. 66.3/UL 5085-3NOTES 1. Part 1 covers the general requirements for transformer characteristics, marking, construction, and tests. Addit
31、ionalspecific requirements are provided in the subsequent parts.2. Part 2 and Part 3 supplement requirements and/or modify the corresponding clauses in Part 1 and should be appliedtogether with Part 1. The numbered clauses in Part 2 and Part 3 correspond to the numbered clauses in Part 1.NOVEMBER 30
32、, 2012CSA C22.2 NO. 66.1-06 UL 5085-162.1.6 EXPOSED CORE TRANSFORMER A transformer having an exposed magnetic corelamination.2.1.7 INDUSTRIAL CONTROL TRANSFORMER A transformer suitable for field installation andintended to operate within a 40C (104F) ambient temperature.2.1.8 NONVENTILATED DRY-TYPE
33、TRANSFORMER A dry-type enclosed transformer which isconstructed to provide no intentional circulation of external air through the transformer and is intendedto operate at normal ambient room air pressure.2.1.9 VENTILATED DRY-TYPE TRANSFORMER A dry-type enclosed transformer constructed sothat ambient
34、 air may circulate through the enclosure to cool the transformer core and windings.2.1.10 WINDING A continuous conductor made up of a number of turns magnetically coupled to amagnetic core, to which a voltage is either applied or induced.Note: Two or more such conductors that are permanently factory
35、 connected to form intermediate voltage taps, currenttaps, or similar items are considered a single winding. The winding can consist of single or parallel-wound conductors.3 General3.1 Components3.1.1 Except as indicated in Clause 3.1.2, a component of a product covered by this standard shallcomply
36、with the requirements for that component. See Annex B for a list of standards coveringcomponents generally used in the products covered by this standard. A component shall comply with theCSA or UL standards as appropriate for the country where the product is to be used.3.1.2 A component is not requi
37、red to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this standard, orb) Is superseded by a requirement in this standard.3.1.3 A component shall be used in accordance with its rating establish
38、ed for the intended conditions ofuse.3.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as certaintemperatures not exceeding specified limits, and shall be used only unde
39、r those specific conditions.3.1.5 For transformers intended for use in Canada the following applies: General requirementsapplicable to this standard are given in CAN/CSA-C22.2 No. 0, General Requirements CanadianElectrical Code, Part II.APRIL 17, 2006 CSA C22.2 NO. 66.1-06 UL 5085-1 93.2 Reference P
40、ublications3.2.1 Products covered by this Standard shall comply with the reference installation codes and standardsas appropriate for the country where the product is to be used. When the product is intended for use inmore than one country, the product shall comply with the installation codes and st
41、andards for all countrieswhere it is intended to be used.For undated references to standards, such reference shall be considered to refer to the latest edition andall revisions to that edition up to the time when this standard was approved. For dated references tostandards, such reference shall be c
42、onsidered to refer to the dated edition and all revisions published tothat edition up to the time the standard was approved. See the following information for a list of referencepublications.ANCE StandardsNMX-J-235/2ANCEEnclosures for Electrical Equipment, Environmental ConsiderationsCSA StandardsC2
43、2.1-02Canadian Electrical Code, Part 1 (19th Edition)CAN/CSA-C22.2 No. 0-M91 (R2001)General Requirements Canadian Electrical Code, Part IIC22.2 No. 0.1-M1985 (R2013)General Requirements for Double-Insulated EquipmentC22.2 No. 0.15-01Adhesive LabelsCAN/CSA-C22.2 No. 0.17-00 (R2004)Evaluation of Prope
44、rties of Polymeric MaterialsC22.2 No. 14-95 (R2001)Industrial Control EquipmentCAN/CSA-C22.2 No. 18-98 (R2003)Outlet Boxes, Conduit Boxes, Fittings, and Associated HardwareCAN/CSA-C22.2 No. 65-03Wire ConnectorsCAN/CSA-C22.2 No. 94-M91 (R2001)Special Purpose EnclosuresCAN/CSA C22.2 No. 94.2Enclosures
45、 for Electrical Equipment, Environmental ConsiderationsC22.2 No. 153-M1981 (R2003)Quick-Connect TerminalsDECEMBER 6, 2013CSA C22.2 NO. 66.1-06 UL 5085-110C22.2 No. 209-M1985 (R2004)Thermal Cut-OffsCAN/CSA-C22.2 No. 60065:03Audio, Video and Similar Electronic Apparatus Safety RequirementsCAN/CSA-C22.
46、2 No. 60950-1-03Information Technology Equipment Safety Part 1: General RequirementsUL StandardsUL 50Enclosures for Electrical EquipmentUL 50EEnclosures for Electrical Equipment, Environmental ConsiderationsUL 310Electrical Quick-Connect TerminalsUL 486A-486BWire ConnectorsUL 486EEquipment Wiring Te
47、rminals for Use with Aluminum and/or Copper ConductorsUL 508Industrial Control EquipmentUL 514CNonmetallic Outlet Boxes, Flush-Device Boxes, and CoversUL 746BPolymeric Materials Long Term Property EvaluationsUL 746CPolymeric Materials Use in Electrical Equipment EvaluationsUL 969Marking and Labeling
48、 SystemsUL 1446Systems of Insulating Materials GeneralUL 2097Reference Standard for Double Insulation Systems for Use in Electronic EquipmentUL 2353Single- and Multi-Layer Insulated Winding WireUL 60691Thermal-Links Requirements and Application GuideDECEMBER 6, 2013 CSA C22.2 NO. 66.1-06 UL 5085-1 1
49、0AANSI/NFPA1StandardsANSI/NFPA 70,National Electrical CodeASTM2StandardsA 90/A 90MStandard Test Method for Weight (Mass) of Coating on Iron and Steel Articles with Zinc or Zinc-AlloyCoatingsA 653/A 653MStandard Specification for Steel Sheet, Zinc-Coated, (Galvanized) or Zinc-Iron Alloy-Coated(Galvannealed) by the Hot-Dip Process,D 396Standard Specification for Fuel OilsE230/E230MStandard Specification and Temperature-Electromotive Force (emf) Tables for StandardizedThermoco
