CAN CSA-C22 2 NO 165-1992 Electric Boilers (First Edition General Instruction No 1 May 1992).pdf

1、National Standard of Canada CAN/GSA -C22.2 No. 165-92 Electric Boilers Prepared by Canadian Standards Association Approved by Standards Council of Canada ISSN 03 17-5669 Published in May 1992 by Canadian Standards Association 178 Rexdale Boulevard, Rexdale (Toronto), Ontario, Canada M9W 1 R3 The Can

2、adian Standards Association (CSA), under whose auspices this National Standard has been pro- duced, was chartered in 191 9 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for-profit, nonstatutory, voluntary membership association engaged in sta

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16、 du Canada sont disponibles en versions fran aise et anglaise. General Instruction No. 1CAN/CSA-C22.2 No. 165-92May 1992Title: Electric BoilersPagination: 54 pages, each dated May 1992To register for e-mail notification about any updates to this publicationgo to www.shopcsa.caclick on E-mail Service

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18、ct your personal information.Technical Editor: Rick Gilmour Managing Editor: Bernard Kelly Canadian Standards Association 1992 Al! rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior permission of the publisher

19、. Contents Technical Committee on Industrial Products 5 Subcommittee on C22.2 No. 165 6 Preface 7 Foreword 9 1. Scope 11 2. Definitions 11 3. General Requirements 12 3.1 General 12 3.2 Reference Publications 12 4. Construction 14 4.1 General 14 4.1.1 Electrical Components 14 4.1.2 Boilers 14 4.2 Fra

20、me and Enclosure 15 4.2.1 General 15 4.2.2 Thickness of Sheet Metal Enclosures 16 4.2.3 Openings in Enclosures 16 4.2.4 Doors, Covers, and Guards 17 4.2.5 Protection Against Corrosion 18 4.3 Mechanical Assembly 18 4.4 Accessibility of Parts 18 4.5 Electrical Supply Connections 18 General 18 Field Wi

21、ring Terminals and Leads 19 Busway Connections 19 CurrentCarrying Parts 20 Internal Wiring 20 Electrical Insulation 21 Thermal Insulation 21 Heater Elements 22 Transformers 22 Motors 22 Switches and Controls 23 Limit Controls 23 LowWater Cutoff 25 PressureRelieving Devices 25 Overload, Overcurrent,

22、and Ground Fault Motor Circuits 26 Control Circuits 26 Heater Element Circuits 27 Internal Conductors for Power Circuits 27 Transformers 28 Protective Devices 29 Spacings 29 Separation of Circuits 30 CAN/CSAC22.2 No. 1692 May 1992 Page 3 4.5.1 4.5.2 4.5.3 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4 1

23、5 4.16 4.17 4 . 17 . 1 4 . 17 . 2 4.17.3 4.17.4 4.17.5 4.17.6 4 18 4 . 19 Protection 26 4.20 Grounding and Bonding 31 5. Marking 31 6. Tests 33 6.1 Sequence of Tests 33 6.2 Test Conditions 33 6.2.1 voltage 33 6.2.2 Frequency 34 6.2.3 Test Enclosures 34 6.3 Rating 35 6.4 Safety Limit Control Cutout 3

24、6 6.5 Temperature (Normal) 35 6.6 Dielectric Strength 37 6.7 Pump Failure 37 6.8 Blocked Water Flow 38 6.9 LowWater Abnormal 38 6.10 Continuity of Ground 38 6.11 Proof Test for Steel Boilers Constructed in Accordance with Clause 4.1.2.3 39 6.12 Overload (Transformers) 39 6.13 Burnout (Transformers)

25、40 6.14 Limited Short Circuit (Protective Devices) 40 Tables 43 Figure 53 Appendix A-Marking Translations 54 CAN/CSAC22.2 No. 16592 May 1992 - Page 4 Technical Committee on Industrial Products G.F. Longmuir Commander Electrical Equipment Inc., Chair Scarborough, Ontario D.A. Coleman British Columbia

26、 Ministry of Vice-Chair Municipal Affairs, Recreation, and Culture, Vancouver, British Columbia R.C. Gilmour Canadian Standards Association, Administrator Rexdale, Ontario Representing Regulatory Authorities D.H. Dunsire Manitoba Hydro, Winnipeg, Manitoba K.D. McLennan Alberta Department of Labour,

27、Edmonton, Alberta M. Riendeau Ministre du Travail du Qubec, Montral, Qubec Representing Manufacturers R.D. Colvin AllenBradley Canada Ltd., Cambridge, Ontario M. Smith AllenBradley Canada Ltd., Cambridge, Ontario R.A. Wilson Westinghouse Canada Inc., Hamilton, Ontario Representing General Interests

28、S.J. Casey Portland Electronics Ltd., Dartmouth, Nova Scotia Representing Canadian Electrical Contractors Association R.E. Dowling Canadian Standards Association, Rexdale, Ontario CAN/CSAC22.2 No. 16592 May 1992 Page 5 Subcommittee on C22.2 No. 165 M. Gagnon Henlex Inc., Chair Ville St. Laurent, Qub

29、ec K. Dennison New Yorker Boiler Company Ltd., Sussex, New Brunswick C.F. Jeerings Emerson Electric Company, Ogden, Utah, USA M. Kotb Ministre du Travail du Qubec, Montral, Qubec P. Lussier F.P. Industries (1991) Inc., Bromptonville, Qubec J.J. Nowak Underwriters Laboratories Inc., Northbrook, Illin

30、ois, USA G.S. Presser Acme Engineering Products Ltd., Montral, Qubec R. Quimper Ministre du Travail du Qubec, Montral, Qubec D. Shepherd Canadian Standards Association, PointeClaire, Quebec T.J. Soyka Chromalox Canada, Rexdale, Ontario G.H. Sprentall Canadian Standards Association, Administrator Rex

31、dale, Ontario CAN/CSAC22.2 No. 16592 May 1992 Page 6 Preface This is the first edition of CAN/CSAC22.2 No. 165, Electric Boilers, one of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. This Standard applies to stationary hotwater and

32、steam boilers for residential, commercial, and industrial use that utilize metal sheathed immersiontype heater elements and are intended for permanent connection to the source of supply. It does not apply to electrodetype boilers. In the development of this Standard, the corresponding Underwriters L

33、aboratories Inc. Standard for electric boilers was reviewed with a view to harmonizing the requirements wherever possible. This Standard sets minimum requirements that are not intended to conflict with or supersede the requirements of CSA Standard B51 or other applicable standards for boilers that f

34、all under the provisions of the Boilers and Pressure Vessels Act of the provinces or territories of Canada. For general information on the Standards of the Committee on Canadian Electrical Code, Part II see the Preface of CSA Standard CAN/CSA-C22.2 No. 0, General Requirements-Canadian Electrical Cod

35、e, Part II. This Standard was prepared by a Subcommittee of the Technical Committee on Industrial Products under the jurisdiction of the Steering Committee on the Canadian Electrical Code, Part II and formally approved by these Committees. It has been approved as a National Standard of Canada by the

36、 Standards Council of Canada. May 1992 Notes: (1) Use of the singular in this Standard does not exclude the plural (and vice versa) when the sense allows. (2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility

37、 of the users of the Standard to judge its suitability for their particular purpose. (3) CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee. (4) All enquiries regarding this Standard, including requests for interpretation

38、, should be addressed to Canadian Standards Association, Standards Division, 178 Rexdale Boulevard, Rexdale, Ontario M9W 1R3. Requests for interpretation should (a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch; (b) provide an exp

39、lanation of circumstances surrounding the actual field condition; and (c) be phrased where possible to permit a specific “yes“ or “no“ answer. CAN/CSAC22.2 No. 16592 May 1992 Page 7 Interpretations are published in CSA Information Update. For subscription details and a free sample copy, write to CSA

40、 Sales Promotions or telephone (416) 747-4116. CAN/CSA-C22.2 No. 16592 May 1992 - Page 8 Foreword The Canadian Standards Association provides certification services for manufacturers who, under license from CSA, wish to use the appropriate registered CSA Marks on certain products of their manufactur

41、e to indicate conformity with CSA Standards. CSA Certification for a number of products is provided in the interest of maintaining agreedupon standards of quality, performance, interchangeability and/or safety, as appropriate. Where applicable, certification may form the basis for acceptance by insp

42、ection authorities responsible for enforcement of regulations. Where feasible, programs will be developed for additional products for which certification is desired by producers, consumers or other interests. In performing its functions in accordance with its objectives, CSA does not assume or under

43、take to discharge any responsibility of the manufacturer or any other party. The opinions and findings of the Association represent its professional judgement given with due consideration to the necessary limitations of practical operation and state of the art at the time the Standard is processed.

44、Products in substantial accord with this Standard but which exhibit a minor difference or a new feature may be deemed to meet the Standard providing the feature or difference is found acceptable utilizing appropriate CSA Certification Division Operating Procedures. Products which comply with this St

45、andard shall not be certified if they are found to have additional features which are inconsistent with the intent of this Standard. Products shall not be certifiable if they are discovered to contravene applicable Federal laws or regulations. Testing techniques, test procedures and instrumentation

46、frequently must be prescribed by the CSA Certification Division in addition to the technical requirements contained in Standards of CSA. In addition to markings specified in the Standard the CSA Certification and Testing Division may require special cautions, markings and instructions that are not spec