prEN IEC 63522-2:2024

SLOVENSKI STANDARD
01-oktober-2023
Električni releji - Preskusi in meritve - 7-2. del: Mehanski preskusi in tehtanje
Electrical relays - Tests and Measurements - Part 7-2: Mechanical tests and weighing
Ta slovenski standard je istoveten z: prEN IEC 61810-7-2:2023
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

94/925/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61810-7-2 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-08-18 2023-11-10
SUPERSEDES DOCUMENTS:
94/857/CD, 94/912/CC
IEC TC 94 : ELECTRICAL RELAYS
SECRETARIAT: SECRETARY:
Austria Mr Bernhard Spalt
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

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
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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
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Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Electrical relays – Tests and Measurements – Part 7-2: Mechanical tests and weighing

PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
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.

– 2 – IEC CDV 61810-7-2 © IEC 2023
1 CONTENTS
3 FOREWORD . 3
4 1 Scope . 5
5 2 Normative references . 5
6 3 Terms and definitions . 5
7 4 Testing procedure. 6
8 4.1 Mechanical tests . 6
9 4.1.1 Purpose . 6
10 4.1.2 Procedure . 6
11 4.1.3 Conditions to be specified . 10
12 4.2 Weighing . 11
13 4.2.1 Purpose . 11
14 4.2.2 Procedure . 11
15 4.2.3 Conditions to be specified . 11
16 5 Evaluation . 11
17 Annex A (informative) Diagram of typical relay test level . 12
18 Annex T (informative) Test report. 14
19 T.1 Mechanical tests report . 14
20 T.2 Weighing report . 14
21 Bibliography . 15
23 Figure 1 – Parameter schematic diagram based on Force-Displacement curve . 5
24 Figure 2 – Diagram of Clapper-type relay test level . 6
25 Figure B.1 – Diagram of Direct acting relay test level . 10
26 Figure B.2 –Diagram of Balanced armature relay test level . 10
27 Figure B.3 – Diagram of Balanced force relay test level . 11
IEC CDV 61810-7-2 © IEC 2023 – 3 –
31 INTERNATIONAL ELECTROTECHNICAL COMMISSION
32 ____________
34 ELECTRICAL RELAYS – Tests and Measurements
36 Part 7-2: Mechanical tests and weighing
39 FOREWORD
40 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
41 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
42 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
43 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
44 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
45 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
46 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
47 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
48 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
49 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
50 consensus of opinion on the relevant subjects since each technical committee has representation from all
51 interested IEC National Committees.
52 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
53 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
54 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
55 misinterpretation by any end user.
56 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
57 transparently to the maximum extent possible in their national and regional publications. Any divergence between
58 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
59 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
60 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
61 services carried out by independent certification bodies.
62 6) All users should ensure that they have the latest edition of this publication.
63 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
64 members of its technical committees and IEC National Committees for any personal injury, property damage or
65 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
66 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
67 Publications.
68 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
69 indispensable for the correct application of this publication.
70 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
71 rights. IEC shall not be held responsible for identifying any or all such patent rights.
72 The International Standard IEC 61810 has been prepared by IEC technical committee 94: All-
73 or-nothing electrical relays.
74 The text of this International Standard is based on the following documents:
CD CC
94/857/CD 94/912/CC
75 Full information on the voting for the approval of this International Standard can be found in the
76 report on voting indicated in the above table.
77 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
78 A list of all parts of the IEC 61810 series can be found, under the general title Electromechanical
79 elementary relays, on the IEC website.
80 This International Standard is to be used in conjunction with IEC 61810-1:2015.

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81 The committee has decided that the contents of this document will remain unchanged until the
82 stability dateindicated on the IEC website under webstore.iec.ch in the data related to the
83 specific document. At this date, the document will be
84 • reconfirmed,
85 • withdrawn,
86 • replaced by a revised edition, or
87 • amended.
IEC CDV 61810-7-2 © IEC 2023 – 5 –
89 ELECTRICAL RELAYS – Tests and Measurements
91 Part 7-2: Mechanical tests and weighing
95 1 Scope
96 This part of IEC 61810-7 is used for testing all kind of relays within the scope of technical
97 committee 94 and shall evaluate their ability to perform under expected conditions of
98 transportation, storage and all aspects of operational use.
99 The object of this test is to define a standard test method for ensure that particular mechanical
100 properties (such as contact force, contact gaps, armature travel) and weight , are within
101 specified limits.
102 2 Normative references
103 The following documents are referred to in the text in such a way that some or all of their content
104 constitutes requirements of this document. For dated references, only the edition cited applies.
105 For undated references, the latest edition of the referenced document (including any
106 amendments) applies.
107 IEC 61810-7-0: 20XX, All-or-nothing electrical relays – Tests and Measurements – Part 7-0: –
108 Testing general
110 3 Terms and definitions
111 For the purposes of this document, the terms and definitions given in Clause 3 of IEC 61810-7-
112 0 apply.
113 ISO and IEC maintain terminological databases for use in standardization at the following
114 addresses:
115 • IEC Electropedia: available at http://www.electropedia.org/
116 • ISO Online browsing platform: available at http://www.iso.org/obp
117 3.1
118 Contact force
119 force which two contact members extert against each other at their contact points in the closed
120 position.
121 [SOURCE: IEC 60050-444:2002, 444-04-10]
122 NOTE 1  The contact force can be obtained by F-D curve or direct measurement.
123 3.2
124 Counter force
125 force which from reed (or spring) system before the relay is energized at contact points or
126 armature.
127 3.3
128 Armature travel
129 distance (angle) which the armature moves from its initial position to final position when the
130 relay is energized.
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131 3.4
132 F-D curve
133 curve which represents the relationship between the attractive force from electromagnetic system and
134 counter force from reed (or spring) system in an electromagnetic relay.
135 3.5
136 Contact gap
137 gap between the contact points when the contact circuit is open
138 [SOURCE: IEC 60050-444:2002, 444-04-09]
140 4 Testing procedure
141 4.1 Mechanical tests
142 4.1.1 Purpose
143 To ensure that particular mechanical properties (for example contact force, armature travel,
144 contact gaps) of relay are within specified limits.
145 4.1.2 Procedure
146 4.1.2.1 General
147 On the basis of ensuring the accuracy of the test, other test procedures that are more suitable
148 for the relay under test can be adopted. The following test procedures are recommended.
149 NOTE 1  Three typical test instruments (such as using an image system, force-displacement test system or optical
150 measurements) are recommended, but not restricted to.
151 NOTE 2  The force-displacement test system is usually used for complex test, when it is necessary to test contact
152 force and moving displacement of contact at the same time to obtain the force-displacement curve (F-D curve).

IEC CDV 61810-7-2 © IEC 2023 – 7 –
N.C.CONTACT
FORCE
RELIEF OF MOVING CONTACT GAP
N.O.CONTACT
CONTACT SPRING OVERTRAVEL
● 1: ARMATURE POSITION COIL UNENGERIZED
● 2: N.C.CONTACT OPENS
● 3: N.O.CONTACT CLOSES
● 4: END POSITION OF COLSED CONTACT
154 a) Example of F-D curve for change over relay
●
●
1●
N.O.CONTACT
CONTACT GAP
OVERTRAVEL
● 1: ARMATURE POSITION COIL UNENGERIZED
● 2: N.O.CONTACT CLOSES
● 3: END POSITION OF COLSED CONTACT
156 b) Example of F-D curve for N.O relay
ARMATURE FORCE
ARMATURE FORCE
N.O.CONTACT
FORCE
N.O.CONTACT
FORCE
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