1、C22.2 No. 4-16Enclosed and dead-front switchesLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing var
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18、s Update ServiceC22.2 No. 4-16February 2016Title: Enclosed and dead-front switchesTo register for e-mail notification about any updates to this publication go to shop.csa.ca click on CSA Update ServiceThe List ID that you will need to register for updates to this publication is 2423692.If you requir
19、e assistance, please e-mail techsupportcsagroup.org or call 416-747-2233.Visit CSA Groups policy on privacy at www.csagroup.org/legal to find out how we protect your personal information.Association of Standardization and CertificationNMX-J-162-ANCE-2016Fourth EditionCSA GroupCSA-C22.2 No. 4-16Eight
20、h EditionUnderwriters Laboratories Inc.UL 98Fourteenth EditionEnclosed and Dead-Front SwitchesFebruary 12, 2016ANSI/UL 98-2016Commitment for AmendmentsThis standard is issued jointly by the Association of Standardization and Certification (ANCE), theCanadian Standards Association (operating as “CSA
21、Group”), and Underwriters Laboratories Inc. (UL).Comments or proposals for revisions on any part of the standard may be submitted to ANCE, CSAGroup, or UL at anytime. Revisions to this standard will be made only after processing according to thestandards development procedures of ANCE, CSA Group, an
22、d UL. CSA Group and UL will issuerevisions to this standard by means of a new edition or revised or additional pages bearing their dateof issue. ANCE will incorporate the same revisions into a new edition of the standard bearing the samedate of issue as the CSA Group and UL pages.Copyright 2016 ANCE
23、Rights reserved in favor of ANCE.ISBN 978-1-77139-928-9 2016 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 review five years from the date of publication, and suggestions for
24、 itsimprovement will be referred to the appropriate committee. To submit a proposal for change, pleasesend the following information to inquirescsagroup.org and include Proposal for change in thesubject line: Standard designation (number); relevant clause, table, and/or figure number; wording ofthe
25、proposed change; and rationale for the change.To purchase CSA Group Standards and related publications, visit CSA Groups Online Store atshop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044.Copyright 2016 Underwriters Laboratories Inc.ULs Standards for Safety are copyrighted by UL. Neither a
26、printed nor electronic copy of a Standardshould be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regardingthose Standards shall remain the sole and exclusive property of UL.This ANSI/UL Standard for Safety consists of the Fourteenth edition. The most recent desi
27、gnation ofANSI/UL 98 as an American National Standard (ANSI) occurred on February 12, 2016. ANSI approvalfor a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or thePreface.Comments or proposals for revisions on any part of the Standard may be submitted to U
28、L at any time.Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative StandardsDevelopment System (CSDS) at http:/.To purchase UL Standards, visit Comm 2000 at http:/m- call toll-free 1-888-853-3503.CONTENTSPreface .51 Scope .62 Normative References .73 Components 74 Units
29、of Measurement .85 Definitions 86 Construction .116.1 General 116.2 Enclosure 126.3 Operating mechanism 136.4 Accessibility of live parts .146.5 Electrical insulation material 146.6 Spacings .156.7 Current-carrying parts 216.8 Fusing .266.9 Field conversion .276.10 Enclosed switch wiring and bending
30、 space 296.11 Disconnecting means of the grounded service conductor 336.12 Provision for grounding .336.13 Provision for bonding .356.14 Electrically tripped switches 366.15 Additional service equipment requirements for Canada .367 Test methods 377.1 General 377.2 Heating test 397.3 Overload test .4
31、27.4 Endurance test 467.5 Dielectric voltage-withstand test .497.6 Clamped joint test 497.7 Close-open test .507.8 Short-circuit withstand test 517.9 Low-level dielectric voltage-withstand test 567.10 Short-circuit closing test .567.11 Strength of insulating base and support test .567.12 Electricall
32、y tripped switches 577.13 Mold stress relief test .597.14 Insulating barriers test 598 Ratings .598.1 General 598.2 Current .608.3 Voltage 608.4 Horsepower or kilowatts 628.5 Short-circuit current 649 Marking .649.1 General 649.2 All switches .659.3 Electrically tripped switches .72FEBRUARY 12, 2016
33、 NMX-J-162-ANCE-2016 CSA-C22.2 NO. 4-16 UL 98 3SUPPLEMENT SA - Enclosed and Deadfront Switches Intended for Marine UseSA1 Scope .77SA2 Definitions 77SA3 General 78SA4 Construction 78SA4.1 Enclosure protection against corrosion 78SA4.2 Current-carrying parts .79SA4.3 Insulating material 795 Performan
34、ce 79SA5.1 Vibration test .79SA5.2 Shock test .80SA5.3 Ignition protection test .80SA5.4 Dripproof enclosure test .81SA5.5 Watertight enclosure test 81SA6 Markings .81ANNEX A (normative)ANNEX B (informative)ANNEX C (normative)ANNEX D (informative)ANNEX E (informative)E1 Instrumentation .89E2 Galvano
35、meter Calibration 89E3 Alternating Current Circuits 10,000 A and Less .90E4 Alternating Current Circuits Greater than 10,000 A .91E5 Recovery Voltage AC .93E6 Direct Current Circuits .94ANNEX F (informative)FEBRUARY 12, 2016NMX-J-162-ANCE-2016 CSA-C22.2 NO. 4-16 UL 984PrefaceThis is the harmonized A
36、NCE, CSA Group, and UL standard for Enclosed and Dead-Front Switches.Itisthe Fourth edition of NMX-J-162-ANCE, the Eighth edition of CSA C22.2 No. 4, and the Fourteenth editionof UL 98. This harmonized standard has been jointly issued February 12, 2016.This harmonized standard was prepared by the As
37、sociation of Standardization and Certification (ANCE),CSA Group, and Underwriters Laboratories Inc., (UL). The efforts and support of the TechnicalHarmonization Committee for Enclosed Switches, of the Council on the Harmonization of ElectrotechnicalStandards of the Nations of the Americas (CANENA),
38、are 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 Enclosed and Dead-Front Switches, under thejurisdiction of the CSA Technical Committee on Industrial Product
39、s and the CSA Strategic SteeringCommittee on Requirements for Electrical Safety, and has been formally approved by the CSA TechnicalCommittee.This standard has been approved by the American National Standards Institute (ANSI) as an AmericanNational Standard.Where reference is made to a specific numb
40、er of samples to be tested, the specified number shall 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 of the standard to judge its suitability for their pa
41、rticular purpose.Level of harmonizationThis standard uses the IEC format but is not based on, nor is it considered equivalent to, an IEC standard.This standard is published as an equivalent standard for ANCE, CSA Group, and UL.An equivalent standard is a standard that is substantially the same in te
42、chnical 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, technological, or infrastructural factors, scienti
43、fic justification, or the level of protection thatthe country considers appropriate. Presentation is word for word except for editorial changes.Reasons for differences from IECThe THC determined the safe use of enclosed and dead-front switches is dependent on the design andperformance of the product
44、s in relation to the North American Electrical Codes with which they areintended to be installed.InterpretationsThe interpretation by the standards development organization of an identical or equivalent standard isbased on the literal text to determine compliance with the standard in accordance with
45、 the proceduralrules of the standards development organization. If more than one interpretation of the literal text has beenidentified, a revision is to be proposed as soon as possible to each of the standards developmentorganizations to more accurately reflect the intent.FEBRUARY 12, 2016 NMX-J-162
46、-ANCE-2016 CSA-C22.2 NO. 4-16 UL 98 51 Scope1.1 These requirements cover individually enclosed air switches, rated 4000 A or less at 600 V or less,having all current-carrying parts enclosed, manually operable by means of external handles, and intendedto be employed in accordance with the national in
47、stallation codes listed in Annex A, Ref. No. 1.1.2 As used in this Standard, the term switch is intended to mean an enclosed switch or deadfront switchunless specifically stated otherwise.1.3 These requirements also cover deadfront switches that have all current-carrying parts enclosed whenmounted i
48、n an enclosed panelboard, deadfront switchboard, or the like. These switches are manuallyoperable by means of external handles and are intended to be employed in accordance with the nationalinstallation codes listed in Annex A, Ref. No. 1.1.4 These requirements cover enclosed switches with or withou
49、t provision for fuses suitable for use asbranch circuit, feeder, and service overcurrent protection.1.5 The following fuses are deemed suitable for use as branch circuit, feeder, and service overcurrentprotection:a) Cartridge Fuses (Ref. Annex B, Low-Voltage Fuses Parts 1 10, 12 and 15),b) Plug Fuses (Ref. Annex B, Low-Voltage Fuses Parts 1 and 11), andc) Special Purposes Fuses marked as meeting the performance specifications of a specificClass Fuse.1.6 These requirements cover enclosed switche
