CAN CSA-C22 2 NO 15-M91-1991 Electrically Heated Warming Pads (Second Edition General Instructions No 1 February 1991 General Instructions No 2 November 1992 General Instructions N.pdf

1、National Standard of Canada CAN/CSA-C22.2 No. 15-M9 1 Electrically Heated Warming Pads Prepared by Canadian Standards Association Approved by Standards Council of Canada ISSN 0317-5669 Published in February 1991 by Canadian Standards Association 178 Rexdale Boulevard, Rexdale (Toronto), Ontario, Can

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17、u Canada sont publies en versions franaise et anglaise. Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users to judge its suitability for their particular purpose. Blank pageBlank pageGeneral Instru

18、ction No. 2 CAN/GSA -C22.2 No. 15-M91 November 1992 CSA Standard CAN/CSA-C22.2 No. 1 5-M91, Electrically Heated Warming Pads, was published in February 1991; it consisted of 34 pages, each dated February 1991. An amendment to Clause 4.2.4.1 has been formafly approved and is incorporated (and identif

19、ied by a vertical line in the margin) in the attached replacement pages. CSA Standard CAN/CSA-C22.2 No. 1 5-M91 now consists of the following pages: 312 and 1534 dated February 1991; and 1314A dated November 1992. These replacement pages are to be inserted into your copy of the Standard; the pages r

20、eplaced should be kept for reference. 4. Construction 4.1 General 4.1.1 Electrical components shall be suitable for the application and shall conform to the relevant Standard or Standards of the Canadian Electrical Code, Part II, insofar as they apply. 4.1.2 Warming pads intended to be applied direc

21、tly to any part of the human body shall be of the waterproof type. (See Clause 6.2.) 4.2 General-Use Pads 4.2.1 Heating Element Enclosure 4.2.1.1 The heat element shall be in an inner covering which shall completely enclose all live parts and shall be held securely in place. 4.2.1.2 The material use

22、d for the inner covering shall either be heavy enough to prevent abrasion and tearing at points where these are liable to occur (eg, where the thermostats are located, where the supply wire enters), or shall be reinforced at such points by an additional thickness of material, or some approved equiva

23、lent means. 4.2.1.3 An absorption-resisting envelope meeting the requirements of Clauses 6.1.4.1 and 6.1.9.3 shall be furnished to enclose the inner covering. Note: An additional covering of textile material, to surround the absorption-resisting covering, may be furnished. This additional covering m

24、ay be removable. 4.2.2 Heating Element 4.2.2.1 The heat element wire shall be wound evenly on a flexible core and shall be provided with insulation over the conductor. The material forming the flexible core and the insulating covering shall comply with the flame test specified in Clause 6.4.6. Asbes

25、tos shall not be used as the insulating material covering the flexible core. 4.2.2.2 The heat element shall be held securely in position and shall be located so that the heat is evenly distributed in the pad. If sewn in position, the sewing operation shall not damage the element. The heat element sh

26、all be secured to slow-burning material which complies with the flame test of Clause 6.4.7. Note: Cotton duck and wool are sufficiently slow-burning to be acceptable as suitable material for such fabric, but flannelette (cotton material) has a nap and is not acceptable, unless it has CAN/CSA-C22.2 N

27、o. 15-M91 - November 1992 - Page 13 (Replaces p. 13, February 1991) been treated to render it flameproof. 4.2.2.3 The insulation of the heat elements, when tested in accordance with the tensile strength and elongation tests of CSA Standard C22.2 No. 0.3, shall have a minimum tensile strength of 10 m

28、Pa and a minimum elongation of 100%. 4.2.2.4 The insulation of the heat element, after aging, shall be subjected to tensile strength and elongation tests in accordance with Clause 4.2.2.3 with a maximum depreciation of 25% and 35% respectively in the value obtained for the unaged samples. The aging

29、test shall be in accordance with CSA Standard C22.2 No. 0.3, using an oven temperature of 121C, and the duration of the conditioning shall be 14 d. 4.2.2.5 The heat element shall withstand without breakdown the low- temperature bending and dielectric strength tests specified in Clause 6.4.1 and 6.4.

30、5. 4.2.2.6 The maximum deformation of the heat element insulation shall not exceed 50% when subjected to the test specified in Clause 6.4.2. 4.2.2.7 The heat element insulation shall show no signs of cracks, and breakdown shall not occur after the aging, flexibility, and dielectric strength tests sp

31、ecified in Clause 6.4. 4.2.2.8 The heat element shall meet the insulation-resistance requirements of Clause 6.4.4. 4.2.2.9 The heat element shall meet the dielectric strength requirements of Clause 6.4.5. 4.2.3 Heating Pads in Cushions Electrically heated warming pads installed in cushions shall be

32、of the waterproof type and shall comply with Clause 6.2, Tests for Waterproof Pads. 4.2.4 Thermostats 4.2.4.1 A warming pad shall be provided with a sufficient number of thermostats connected so that no section of the heating element will be in series with less than two thermostats under any operati

33、ng condition. Warming pads shall have a separate thermostat located so that it affords protection for each 600 cm2 of the outside surface of the pad or fraction thereof exceeding CAN/CSA-C22.2 No. 15-M91 - November 1992 - Page 14 (Replaces p. 14, February 1991) 100 cm2, the outside surface being con

34、sidered with respect to one side only. Thermostats are not required for warming pads that incorporate PTC (Positive Temperature Coefficient) type heating element wire or that meet the heating tests specified in Clause 6.1.5 without any temperature-regulating device. CAN/CSA-C22.2 No. 15-M91 - Novemb

35、er 1992 - Page 14A General Instruction No. 1CAN/CSA-C22.2 No. 15-M91February 1991Title: Electrically Heated Warming PadsPagination: 34 pages), each dated February 1991To register for e-mail notification about any updates to this publicationgo to www.shop.csa.caclick on E-mail Services under MY ACCOU

36、NTclick on CSA Standards Update ServiceThe List ID that you will need to register for updates to this publication is 2002854.If you require assistance, please e-mail techsupportcsa.ca or call 416-747-2233.Visit CSAs policy on privacy at www.csagroup.org/legal to find out how we protect your personal

37、 information.Technical Committee on Consumer and Commercial Products 5 Subcommittee on C22.2 No. 15 7 Preface 8 Foreword 9 1. Scope 11 2. Definitions 11 3. General Requirements 12 Construction 13 General 13 GeneralUse Pads 13 Heating Element Enclosure Heating Element 13 Heating Pads in Cushions Ther

38、mostats 14 Power Supply Cords 15 Strain Relief 16 Switches 16 4.2.8 Enclosures of Control Switches 4.2.9 Wiring 17 4.2.10 Electrical Connections 17 4.2.11 Radio Interference Suppressors 4.3 Waterproof Pads 17 5. Marking 18 24 25 CAN/CSAC22.2 No. 15-M91 February 1991 Page 3 Contents 4. 4.1 4.2 4.2.1

39、4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.2.7 13 14 16 17 6. Tests 19 6.1 GeneralUse Pads 19 6.1.1 General 19 6.1.2 Test Sequence 20 6.1.3 Rating 20 6.1.4 Resistance to Moisture 20 6.1.5 Heating 21 6.1.6 Flexing 21 6.1.7 Heating (Repeated) 23 6.1.8 Burnout 23 6.1.9 Dielectric Strength 23 6.1.10 Flexible Cord

40、Attachment 24 6.2 Waterproof Pads 24 6.2.1 General 24 6.2.2 Rubber Pads 6.2.3 Thermostats 25 6.2.4 Treated Fabric Test Sequence 6.2.5 Current Leakage 25 6.2.6 Bursting Strength 25 6.2.7 Flexing and Manipulation 26 6.2.8 Current Leakage (Repeated) 26 6.2.9 Tensile Strength of Seams 26 6.2.10 Test Seq

41、uence on Assembled Pad 27 6.2.11 Strain Relief (Pull Test) 27 6.2.12 Current Leakage 27 6.2.13 Dielectric Strength 27 6.3 Thermostats 28 6.3.1 General 28 6.3.2 Test Sequence 28 6.3.3 Calibration 28 6.3.4 Endurance 28 6.3.5 Recalibration 29 6.3.6 Overload 29 6.4 Heater Elements 29 6.4.1 LowTemperatur

42、e Bending 29 6.4.2 Deformation (Heater Element Insulation) 29 6.4.3 Flexibility 30 6.4.4 Insulation Resistance 30 6.4.5 Dielectric Strength 30 6.4.6 Flame Test (Heater Element) 31 6.4.7 Flame Test (Element Support) 31 6.5 Endurance (Control Units) 32 Figures 33 CAN/CSAC22.2 No. 15M9l - February 1991

43、 Page 4 Technical Committee on Consumer and Commercial Products C.M. Speers Alberta Labour, Chairman Edmonton Representing Regulatory Authorities J. Morrison Canadian Standards Association, Standards Rexdale, Ontario Administrator, Nonvoting Representing Regulatory Authorities D. Bennicke Nova Scoti

44、a Department of Labour and Manpower, Halifax R. Layden Newfoundland Department of Labour and Manpower, St. Johns A. Tsisserev The City of Winnipeg, Winnipeg, Manitoba Representing Manufacturers B.E. Arnett Hoover Canada Inc., Burlington, Ontario D.A. Douglas GE Mobile Communications, Toronto, Ontari

45、o Representing Electrical and Electronic Manufacturers Association of Canada (EEMAC) R.I. Lane Camco, Hamilton, Ontario C. Lyons Motorola Canada Limited, North York, Ontario R.C. Maheux R.C. Maheux and Associates, Willowdale, Ontario Representing General Interests J.W. Black Nepean, Ontario Consumer

46、 Representative R.E. Dowling Canadian Standards Association, Alternate Rexdale, Ontario M. Fruitman Retail Council of Canada, Toronto, Ontario CAN/CSAC22.2 No. 15M91 February 1991 Page 5 K.G. Gupta Consumer and Corporate Affairs Canada, Hull, Quebec N. Maalouf Canadian Standards Association, Rexdale, Ontario F.J. McCaughey Bell Canada, Ottawa, Ontario CAN/CSAC22.2 No. 15M91 February 1991 Page 6 Solaray, Brantford, Ontario Sola ray, Brantford, Ontario Prince Edward Island Department of Labour,