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1、 IEC 62246-2 Edition 1.0 2007-10 INTERNATIONAL STANDARD Reed contact units Part 2: Heavy-duty reed switches IEC 62246-2:2007(E) Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 02
2、:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, ele
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4、 contact the address below or your local IEC member National Committee for further information. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization t
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9、r assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17
10、/2007 02:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- IEC 62246-2 Edition 1.0 2007-10 INTERNATIONAL STANDARD Reed contact units Part 2: Heavy-duty reed switches INTERNATIONAL ELECTROTECHNICAL COMMISSION V ICS 29.120.70 PRICE CODE ISBN 2-8318-9330-5 Copyright Intern
11、ational Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 02:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 62246-2 IEC:2007(E) CONTENTS FOREWORD.5 1 General 7 1.1 Scope
12、7 1.2 Normative references 7 1.3 Terms, definitions, abbreviations and symbols.7 1.4 Preferred values8 1.4.1 Frequency of operation8 1.4.2 Duty cycle .8 1.4.3 Open-circuit voltage across contacts .8 1.4.4 Current ratings 8 1.4.5 Load ratings 8 1.4.6 Number of operations 8 1.4.7 Climatic category.8 1
13、.4.8 Preferred environmental severities 8 1.4.9 Rated operational voltage; Ue.8 1.4.10 Rated switching current; Ie9 1.4.11 Rated insulation voltage 9 1.4.12 Rated impulse voltage .9 1.4.13 Utilization categories .9 1.4.14 Contact reliability.9 1.4.15 Limiting continuous current; Ith9 1.5 Marking .10
14、 1.6 Order of precedence .10 1.7 Precautions regarding mercury (for mercury wetted contact units).10 2 Quality assessment procedures10 2.1 General.10 2.2 Self-certification 10 2.3 Two-party certification .10 2.4 Third-party certification10 3 Test and measurement procedures.11 3.1 General.11 3.2 Alte
15、rnative procedures 11 3.3 Standard conditions for testing 11 3.4 Visual inspection and check of dimensions11 3.5 Functional tests.11 3.6 Remanence test 11 3.7 Contact circuit resistance 11 3.8 Dielectric test 11 3.9 Insulation resistance .11 3.10 Operate, release, transfer or bridging, and bounce ti
16、mes.11 3.11 Contact sticking.12 3.12 Robustness of terminals12 3.13 Soldering (solderability and resistance to soldering heat) 12 3.14 Climatic sequence.12 3.15 Damp heat, steady state12 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/
17、1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 02:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- 62246-2 IEC:2007(E) 3 3.16 Rapid change of temperature 12 3.17 Salt mist12 3.18 Bump 12 3.19 Vibration12 3.20 Shock12 3.21 Acceleration test Functional test onl
18、y .12 3.22 Sealing12 3.23 Electrical endurance12 3.23.1 General .12 3.23.2 Types of electrical endurance test .13 3.23.3 Standard electrical endurance test.13 3.23.4 Application simulation endurance test14 3.23.5 Requirements 14 3.23.6 Information to be stated in the detail specification .14 3.24 Me
19、chanical endurance.15 3.25 Maximum cycling frequency.15 3.26 Mounting position test (for mercury wetted contact units) 15 3.27 Drain time test (for mercury wetted contact units)15 3.28 Voltage surge test .15 3.29 Rated impulse voltage.15 3.29.1 Procedure15 3.29.2 Requirements 16 3.29.3 Information t
20、o be stated in the detail specification .16 3.30 Rated making and breaking capacities 16 3.30.1 General test arrangements 16 3.30.2 Procedure16 3.30.3 Requirements 16 3.30.4 Information to be stated in the detail specification .16 3.31 Rated conditional short-circuit current .19 3.31.1 General test
21、arrangements 19 3.31.2 Procedure19 3.31.3 Requirements 19 3.31.4 Information to be stated in the detail specification .20 3.32 Contact reliability test20 3.32.1 General test arrangements 20 3.32.2 Procedure20 3.32.3 Requirements 21 3.32.4 Information to be stated in the detail specification .21 3.33
22、 Temperature rise.22 3.33.1 Procedure22 3.33.2 Requirements 22 3.33.3 Information to be stated in the detail specification .22 3.34 Making current capacity test23 3.34.1 General .23 3.34.2 Procedure23 3.34.3 Requirements 23 3.34.4 Information to be stated in the detail specification .23 3.35 Breakin
23、g current capacity test .24 3.35.1 General .24 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 02:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,-
24、4 62246-2 IEC:2007(E) 3.35.2 Procedure24 3.35.3 Requirements 24 3.35.4 Information to be stated in the detail specification .24 Annex A (informative) Electrical endurance test circuit.26 Annex B (informative) Rated conditional short-circuit current test circuit 28 Annex C (informative) Electrical ra
25、tings based on utilization categories .29 Annex D (informative) Example of test arrangement for contact reliability test .31 Annex E (informative) Standard test coils for heavy-duty reed switches .32 Annex F (informative) Making current capacity test sequence33 Annex G (informative) Breaking current
26、 capacity test sequence.34 Bibliography35 Figure A.1 Generalized endurance test circuit26 Figure A.2 Functional block diagram 27 Figure B.1 Rated conditional short-circuit current test circuit28 Figure D.1 Contact reliability test circuit.31 Figure E.1 Configuration of test coils .32 Figure F.1 Maki
27、ng current capacity test sequence .33 Figure G.1 Breaking current capacity test sequence 34 Table 1 Utilization categories.9 Table 2 Making and breaking capacity for electrical endurance tests .17 Table 3 Verification of making and breaking capacity for AC-15 / DC-13 under normal conditions .18 Tabl
28、e 4 Verification of making and breaking capacity for AC-15 / DC-13 under abnormal conditions19 Table C.1 Examples of contact rating designation based on utilization categories29 Table E.1 List of standard test coils .32 Copyright International Electrotechnical Commission Provided by IHS under licens
29、e with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 02:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- 62246-2 IEC:2007(E) 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ REED CONTACT UNITS Part 2: Heavy-duty reed switches FOREWORD
30、1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electric
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37、nformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for
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39、ative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held respo
40、nsible for identifying any or all such patent rights. International Standard IEC 62246-2 has been prepared by IEC technical committee 94: All-or-nothing electrical relays. This part of IEC 62246 is to be read in conjunction with IEC 62246-1. The text of this standard is based on the following docume
41、nts: CDV Report on voting 94/243/CDV 94/257A/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 62246 s
42、eries, published under the general title Reed contact units, can be found on the IEC website. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 02:53:29 MDTNo reproduction or netwo
43、rking permitted without license from IHS -,-,- 6 62246-2 IEC:2007(E) The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At
44、 this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, U
45、ser=Wing, Bernie Not for Resale, 10/17/2007 02:53:29 MDTNo reproduction or networking permitted without license from IHS -,-,- 62246-2 IEC:2007(E) 7 REED CONTACT UNITS Part 2: Heavy-duty reed switches 1 General 1.1 Scope This part of IEC 62246 applies to the switching performance of heavy-duty reed
46、switches for use in industrial applications based upon Part 1. This part of IEC 62246 specifies reliability tests, rated making and breaking capacities, rated impulse voltages, rated conditional short-circuit currents, temperature rise and construction testing in addition to the requirements of Part
47、 1. Heavy-duty reed switches are glass sealed contact units and include high pressure sealed types. This part of IEC 62246 does not apply to mercury-wetted reed contact units. NOTE 1 Heavy-duty reed switches are mainly used within electromagnetic switching devices, valves, solenoids, power relays, e
48、tc., as the electromagnetic load switching elements. The load conditions should be selected from the standard inductive loads and the load specifications specified in IEC 61810-1 and IEC 60947-5-1. NOTE 2 For elementary relays using heavy-duty reed switches as contact elements, this standard should be used together with IEC 61810-1 and IEC 61811-1 as applicable. NOTE 3 For electromechanical control circuit devices using heavy-duty ree