prEN IEC 61812-1:2022

Time relays and coupling relays for industrial and residential use - Part 1: Requirements and tests

This part of the IEC 61812 series applies to time relays and coupling relays for industrial applications (e.g. control, automation, signal and industrial equipment) and for automatic electrical controls for use in, on, or in association with equipment for residential and similar use. The term "relay" as used in this document comprises all types of relays with specified time functions and coupling relays, other than measuring relays. This document defines type test and routine test to confirm the service condition.

Zeitrelais und Koppelrelais für industrielle Anwendungen und in der Gebäudeinstallation Teil 1: Anforderungen und Prüfungen

Relais à temps spécifié pour applications industrielles et résidentielles - Partie 1: Exigences et essais

Časovni in spojni releji za uporabo v industriji in bivališčih - 1. del: Zahteve in preskusi

General Information

• Status: Not Published
• Publication Date: 08-Aug-2023
• ICS: 29.120.70 - Relays
• Technical Committee: CLC/SR 94 - All-or-nothing electrical relays
• Drafting Committee: IEC/TC 94 - IEC_TC_94
• Current Stage: 4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
• Start Date: 08-Apr-2022
• Completion Date: 08-Apr-2022
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Mandate: M/552 - [C(2016) 7641 final] Standardisation request as regards harmonised standards in support of Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility
• Ref Project: oSIST prEN IEC 61812-1:2022 - Time relays and coupling relays for industrial and residential use - Part 1: Requirements and tests

Relations

• Revises: EN 61812-1:2011 - Time relays for industrial and residential use - Part 1: Requirements and tests
• Effective Date: 03-Mar-2020

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 61812-1:2022
01-marec-2022

Časovni in spojni releji za uporabo v industriji in bivališčih - 1. del: Zahteve in

preskusi

Time relays and coupling relays for industrial and residential use - Part 1: Requirements

and tests

Zeitrelais (Relais mit festgelegtem Zeitverhalten) für industrielle Anwendungen und für

den Hausgebrauch - Teil 1: Anforderungen und Prüfungen

Relais à temps spécifié pour applications industrielles et résidentielles - Partie 1:

Exigences et essais
Ta slovenski standard je istoveten z: prEN IEC 61812-1:2022
ICS:
29.120.70 Releji Relays
oSIST prEN IEC 61812-1:2022 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 61812-1:2022
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oSIST prEN IEC 61812-1:2022
94/596/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61812-1 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-01-14 2022-04-08
SUPERSEDES DOCUMENTS:
94/519/CD, 94/568/CC
IEC TC 94 : ALL-OR-NOTHING ELECTRICAL RELAYS
SECRETARIAT: SECRETARY:
Austria Mr Bernhard Spalt
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
SC 121A
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of

which they are aware and to provide supporting documentation.
TITLE:

Time relays and coupling relays for industrial and residential use - Part 1: Requirements and

tests
PROPOSED STABILITY DATE: 2024
NOTE FROM TC/SC OFFICERS:

Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.

You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

permission in writing from IEC.
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oSIST prEN IEC 61812-1:2022
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2 CONTENTS

3 FOREWORD ........................................................................................................................... 6

4 1 Scope ............................................................................................................................... 8

5 2 Normative references ....................................................................................................... 8

6 3 Terms and definitions ..................................................................................................... 10

7 3.1 Terms and definitions related to general terms ...................................................... 10

8 3.2 Terms and definitions of time relay types ............................................................... 10

9 4 Classification .................................................................................................................. 13

10 4.1 Switching element ................................................................................................. 13

11 4.2 Mechanical construction........................................................................................ 13

12 4.3 Device mounting ................................................................................................... 13

13 4.4 Connection ........................................................................................................... 13

14 4.5 Environment ......................................................................................................... 13

15 5 Influence quantities ........................................................................................................ 13

16 6 Characteristics ................................................................................................................. 14

17 6.1 General ................................................................................................................. 14

18 6.2 Input voltage and frequency .................................................................................. 14

19 6.3 Release voltage .................................................................................................... 15

20 6.4 Power consumption ............................................................................................... 15

21 6.5 Output circuit ......................................................................................................... 15

22 6.5.1 Electromechanical output circuit ................................................................ 15

23 6.5.1.1 General ..................................................................................... 15

24 6.5.1.2 Mechanical endurance ............................................................... 15

25 6.5.2 Solid state output circuit ............................................................................ 16

26 6.5.3 Endurance and operating frequency .......................................................... 16

27 6.5.4 Conditional short circuit current ................................................................. 16

28 6.6 Ambient temperature ............................................................................................. 16

29 6.7 Transport and storage temperature ....................................................................... 17

30 6.8 Humidity ................................................................................................................ 17

31 6.9 Pollution degree .................................................................................................... 17

32 6.10 Altitude .................................................................................................................. 17

33 6.11 Timing circuit function ........................................................................................... 17

34 6.11.1 General ..................................................................................................... 17

35 6.11.2 Setting accuracy ........................................................................................ 17

36 6.11.3 Repeatability ............................................................................................. 18

37 6.11.4 Recovery time and minimum control impulse ............................................. 18

38 7 Provisions for testing ...................................................................................................... 18

39 7.1 General ................................................................................................................. 18

40 7.2 Type test............................................................................................................... 18

41 7.3 Routine test .......................................................................................................... 19

42 7.4 Sampling test ........................................................................................................ 20

43 8 Documentation and marking ........................................................................................... 20

44 8.1 Data ...................................................................................................................... 20

45 8.2 Marking ................................................................................................................. 23

46 9 Heating .......................................................................................................................... 23

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47 9.1 General ................................................................................................................. 23

48 9.2 Test conditions ...................................................................................................... 23

49 9.3 Heating of terminals .............................................................................................. 24

50 9.3.1 General ..................................................................................................... 24

51 9.3.2 Heating of screw terminals and screwless terminals .................................. 24

52 Heating of quick-connect terminations ....................................................... 24

9.3.3

53 9.3.4 Heating of sockets ..................................................................................... 25

54 9.3.5 Heating of alternative termination types ..................................................... 25

55 9.4 Heating of accessible parts ................................................................................... 25

56 9.5 Ball pressure test .................................................................................................. 26

57 10 Basic operating function ................................................................................................. 26

58 10.1 General ................................................................................................................. 26

59 10.2 Operate ................................................................................................................. 26

60 Release ................................................................................................................. 27

10.3

61 10.4 Time function ........................................................................................................ 27

62 10.4.1 Functional test at reference values of input quantities ............................... 27

63 10.4.2 Effect of influence of voltage and temperature ........................................... 27

64 11 Insulation ....................................................................................................................... 28

65 11.1 General ................................................................................................................. 28

66 11.2 Preconditioning ..................................................................................................... 28

67 11.3 Insulation test ........................................................................................................ 28

68 11.3.1 General ..................................................................................................... 28

69 11.3.2 Impulse withstand test ............................................................................... 29

70 Dielectric AC power frequency voltage test ................................................ 29

11.3.3

71 12 Electrical endurance ....................................................................................................... 30

72 12.1 General ................................................................................................................. 30

73 12.2 Resistive loads, inductive loads, and special loads ................................................ 31

74 Low energy loads .................................................................................................. 31

12.3

75 13 Conditional short-circuit current of an output circuit ........................................................ 31

76 13.1 General ................................................................................................................. 31

77 13.2 Test procedure ...................................................................................................... 31

78 Test circuit electromechanical output circuit .......................................................... 31

13.3

79 13.4 Test circuit solid state output circuit ...................................................................... 32

80 13.5 Condition of switching element after test ............................................................... 33

81 14 Clearances and creepage distances ............................................................................... 33

82 General ................................................................................................................. 33

14.1

83 14.2 Clearances ............................................................................................................ 34

84 14.3 Creepage distances............................................................................................... 36

85 14.4 Solid insulation ..................................................................................................... 37

86 14.5 Protection against direct contact ........................................................................... 37

87 15 Mechanical strength ....................................................................................................... 37

88 15.1 General ................................................................................................................. 37

89 15.2 Mechanical strength of terminals and current-carrying parts .................................. 38

90 15.2.1 General ..................................................................................................... 38

91 15.2.2 Mechanical strength of screw terminals and screwless terminals ............... 38

92 Mechanical strength of flat quick-connect terminations .............................. 38

15.2.3

93 15.2.4 Mechanical strength of sockets .................................................................. 38

94 15.2.5 Mechanical strength of alternative termination types .................................. 38

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95 16 Heat and fire resistance.................................................................................................. 38

96 16.1 General ................................................................................................................. 38

97 16.2 Glow-wire test ....................................................................................................... 39

98 Vibration and shock ........................................................................................................ 39

99 17.1 Vibration................................................................................................................ 39

100 17.2 Shock .................................................................................................................... 39

101 18 Electromagnetic compatibility (EMC) .............................................................................. 40

102 18.1 General ................................................................................................................. 40

103 18.2 Immunity ............................................................................................................... 40

104 18.3 Radiated and conducted emission ......................................................................... 41

105 19 Cybersecurity for industrial automation and control systems (IACS) ..................................... 41

106 20 Environmental information .............................................................................................. 41

107 20.1 Environmentally conscious design process ................................................................. 41

108 20.2 Procedure to establish material declaration ............................................................... 41

109

110 Annex A (normative) Terms and definitions of time relay types ............................................ 42

111 Annex B (informative) Setting accuracy, Repeatability and Effect of influence

112 calculation ............................................................................................................................ 50

113 Annex C (informative) Risk assessment ............................................................................... 51

114 Annex D (normative) Tests for EMC ..................................................................................... 56

115

116 Bibliography .......................................................................................................................... 62

117

118 Figure 1 – Definition of ports ................................................................................................. 12

119 Figure 2 – Test circuit electromechanical output, conditional short-circuit current ................. 32

120 Figure 3 – Test circuit solid state output, conditional short-circuit current .............................. 33

121 Figure A.1 – Power ON-delay relay ....................................................................................... 42

122 Figure A.2 – ower OFF-delay relay ....................................................................................... 42

123 Figure A.3 – OFF-delay relay with control signal ................................................................... 43

124 Figure A.4 – ON and OFF-delay relay with control signal ...................................................... 43

125 Figure A.5 – Flasher relay ..................................................................................................... 44

126 Figure A.6 – Star-delta relay ................................................................................................. 45

127 Figure A.7 – Summation time relay ....................................................................................... 45

128 Figure A.8 – Pulse delayed relay .......................................................................................... 46

129 Figure A.9 – Pulse delayed relay with control signal ............................................................. 46

130 Figure A.10 – Interval relay ................................................................................................... 47

131 Figure A.11 – Interval relay with control signal ...................................................................... 47

132 Figure A.12 – Retriggerable interval relay with control signal ON .......................................... 48

133 Figure A.13 – Retriggerable interval relay with control signal OFF ........................................ 48

134 Figure A.14 – Maintained time relay ...................................................................................... 49

135 Figure C.1 – Iterative process of risk assessment and risk reduction .................................... 51

136 Figure C.2 – Risk reduction................................................................................................... 52

137 Figure C.3 – Example for time relay circuit block diagram ..................................................... 54

138
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139 Table 1 – Influence quantities and reference values .............................................................. 13

140 Table 2 – Preferred values of endurance .............................................................................. 16

141 Table 3 – Preferred values of maximum permissible operating frequency.............................. 16

142 Table 4 – Recommended final values of the setting range .................................................... 17

143 Table 5 – Type testing .......................................................................................................... 19

144 Table 6 – Routine testing ...................................................................................................... 19

145 Table 7 – Required time relay or coupling relay information .................................................. 21

146 Table 8 – Areas and lengths of conductors dependent on the current carried by the

147 terminal ................................................................................................................................ 24

148 Table 9 – Maximum steady state current dependent on the connector size ........................... 25

149 Table 10 – Temperature rise limits of accessible parts .......................................................... 26

150 Table 11 – Changing of influencing quantities ....................................................................... 28

151 Table 12 – Impulse test for basic insulation .......................................................................... 29

152 Table 13 – Dielectric test voltage for devices suitable for use in single-phase three or

153 two-wire AC and DC systems ................................................................................................ 30

154 Table 14 – Dielectric test voltage for devices suitable for use in three-phase four or

155 three-wire a.c. systems ......................................................................................................... 30

156 Table 15 – Minimum clearances for basic insulation ............................................................ 35

157 Table 16 – Minimum clearances in controlled overvoltage conditions for internal

158 circuits ................................................................................................................................. 35

159 Table 17 – Minimum creepage distances for basic insulation ............................................... 36

160 Table B.1 – Calculation formulas .......................................................................................... 50

161 Table C.1 – Examples for the relation between failure mode, consequences and

162 hazard .................................................................................................................................. 54

163 Table C.2 – Severity of harm ................................................................................................ 55

164 Table C.3 – Probability of harm ............................................................................................. 55

165 Table C.4 – Risk category ..................................................................................................... 55

166 ......................................................... 56
Table D.1 – Environmental conditions influencing EMC

167 Table D.2 – Immunity tests for industrial environments ........................................................ 58

168 Table D.3 – Immunity tests for residential, commercial and light-industrial

169 environments ........................................................................................................................ 60

170 Table D.4 – Terminal disturbance voltage limits for conducted radio-frequency

171 emission (for control supply input) ........................................................................................ 61

172 Table D.5 – Radiated emission test limits ............................................................................ 61

173
174
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175 INTERNATIONAL ELECTROTECHNICAL COMMISSION
176 _____________
177
178 TIME RELAYS AND COUPLING RELAYS FOR INDUSTRIAL AND
179 RESIDENTIAL USE –
180
181 Part 1: Requirements and tests
182
183
184 FOREWORD

185 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

186 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

187 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

188 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

189 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

190 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

191 may participate in this preparatory work. International, governmental and non-governmental organizations liaising

192 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

193 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

194 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

195 consensus of opinion on the relevant subjects since each technical committee has representation from all

196 interested IEC National Committees.

197 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

198 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

199 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

200 misinterpretation by any end user.

201 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

202 transparently to the maximum extent possible in their national and regional publications. Any divergence between

203 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

204 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

205 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

206 services carried out by independent certification bodies.

207 6) All users should ensure that they have the latest edition of this publication.

208 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

209 members of its technical committees and IEC National Committees for any personal injury, property damage or

210 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

211 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

212 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

213 indispensable for the correct application of this publication.

214 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

215 rights. IEC shall not be held responsible for identifying any or all such patent rights.

216 International Standard IEC 61812-1 has been prepared by IEC technical committee 94: All-or-

217 nothing electrical relays.

218 This third edition cancels and replaces the second edition published in 2011. This edition

219 constitutes a technical revision.

220 This edition includes the following significant technical changes with respect to the previous

221 edition:
222 – update of references;
223 – addition of requirements for risk assessment;
224 – addition of requirements for routine test;
225 – renumbering of clauses to bring them into a more logical order;
226 – clarification of the requirement for shock;

227 – addition of cybersecurity requirement for industrial automation and control systems;

228 – addition of environmentally conscious design requirement;
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229 – addition of common data dictionary reference;
230 – addition of terms and definitions of relay types;
231 – addition of coupling relays in title temporarily;
232 – addition of coupling relays in scope temporarily;
233 The text of this document is based on the following documents:
4CD Report on voting
94/519/CD 94/568/CC
234

235 Full information on the voting for the approval of this International Standard can be found in the

236 report on voting indicated in the above table.

237 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

238 A list of all parts of the IEC 61812 series can be found, under the general title TIME RELAYS

239 AND COUPLING RELAYS FOR INDUSTRIAL AND RESIDENTIAL USE, on the IEC website.

240 The committee has decided that the contents of this document will remain unchanged until the

241 stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to

242 the specific document. At this date, the document will be
243 • reconfirmed,
244 • withdrawn,
245 • replaced by a revised edition, or
246 • amended.
247
248
249
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250 TIME RELAYS AND COUPLING RELAYS FOR INDUSTRIAL AND
251 RESIDENTIAL USE –
252
253 Part 1: Requirements and tests
254
255
256
257 1 Scope

258 This part of the IEC 61812 series applies to time relays and coupling relays for industrial

259 applications (e.g. control, automation, signal and industrial equipment) and for automatic

260 electrical controls for
...