prEN IEC 60947-5-5:2024
(Main)Low-voltage switchgear and controlgear - Part 5-5: Control circuit devices and switching elements - Electrical emergency stop device with mechanical latching function
Low-voltage switchgear and controlgear - Part 5-5: Control circuit devices and switching elements - Electrical emergency stop device with mechanical latching function
Niederspannungsschaltgeräte - Teil 5-5: Steuergeräte und Schaltelemente - Elektrisches NOT-AUS-Gerät mit mechanischer Verrastfunktion
Appareillage à basse tension - Partie 5-5: Appareils et éléments de commutation pour circuits de commande - Appareil d'arrêt d'urgence électrique à accrochage mécanique
Nizkonapetostne stikalne in krmilne naprave - 5-5. del: Krmilne naprave in stikalni elementi - Električna (varnostna) naprava za zaustavitev v sili z mehansko zaporo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2024
Nizkonapetostne stikalne in krmilne naprave - 5-5. del: Krmilne naprave in stikalni
elementi - Električna (varnostna) naprava za zaustavitev v sili z mehansko zaporo
Low-voltage switchgear and controlgear - Part 5-5: Control circuit devices and switching
elements - Electrical emergency stop device with mechanical latching function
Niederspannungsschaltgeräte - Teil 5-5: Steuergeräte und Schaltelemente - Elektrisches
NOT-AUS-Gerät mit mechanischer Verrastfunktion
Appareillage à basse tension - Partie 5-5: Appareils et éléments de commutation pour
circuits de commande - Appareil d'arrêt d'urgence électrique à accrochage mécanique
Ta slovenski standard je istoveten z: prEN IEC 60947-5-5:2024
ICS:
29.120.99 Druga električna dodatna Other electrical accessories
oprema
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
121A/612/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60947-5-5 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-08-16 2024-11-08
SUPERSEDES DOCUMENTS:
121A/596/CD, 121A/605A/CC
IEC SC 121A : LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR
SECRETARIAT: SECRETARY:
France Mr Michaël LAHEURTE
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 44
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.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some 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:
Low-voltage switchgear and controlgear – Part 5-5: Control circuit devices and switching elements – Electrical
emergency stop device with mechanical latching function
PROPOSED STABILITY DATE: 2028
NOTE FROM TC/SC OFFICERS:
SC 121A Officers support circulation of CDV for project IEC 60947-5-5 ED2.
NC experts are kindly requested to refer their comments to line number.
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.
121A/612/CDV 2 IEC CDV 60947-5-5 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
3.1 General . 8
4 Classification . 9
4.1 Contact elements . 9
4.2 Means of actuation . 10
4.3 Additional functions. 10
4.4 Emergency stop device mounting . 10
5 Characteristics . 10
5.1 Summary of characteristics . 10
5.2 Type of emergency stop device . 10
5.3 Rated and limiting values for switching elements . 10
5.4 Utilization categories . 10
6 Product information . 10
6.1 Nature of information . 10
6.2 Marking . 11
6.2.1 General . 11
6.2.2 Push-button type emergency stop devices . 11
6.2.3 Trip wire switches . 11
6.3 Instructions for installation, operation and maintenance, decommissioning
and dismantling . 11
6.4 Environmental information . 11
6.5 Reliability data . 11
7 Normal service, mounting and transport conditions . 12
8 Constructional and performance requirements . 12
8.1 Constructional requirements . 12
8.1.1 General . 12
8.1.2 Additional requirements for push-button type emergency stop devices . 12
8.1.3 Additional requirements for trip wire switches . 12
8.1.4 Additional requirements for foot switches . 12
8.2 Performance requirements . 12
8.2.1 General . 12
8.2.2 Contact elements for direct opening action . 13
8.2.3 Operation . 13
8.2.4 Opening and latching . 13
8.2.5 Additional requirements for push-button type emergency stop device . 13
8.2.6 Additional requirements for trip wire switches . 13
8.3 Electromagnetic compatibility (EMC) . 14
8.4 Special requirements . 14
8.4.1 Requirements for functional safety applications . 14
8.4.2 Requirements for emergency stop devices embedding additional
functions . 14
9 Tests . 14
IEC CDV 60947-5-5 © IEC 2024 3 121A/612/CDV
9.1 Kinds of tests . 14
9.1.1 General . 14
9.1.2 Type tests. 14
9.1.3 Routine tests . 15
9.1.4 Sampling tests . 15
9.1.5 Special tests . 15
9.2 Compliance with constructional requirements . 15
9.3 Performance . 15
9.3.1 General . 15
9.3.2 Test sequences . 15
9.3.3 General test condition . 16
9.3.4 Robustness of a push-button actuator. 16
9.3.5 Robustness of a trip wire actuator. 17
9.3.6 Mechanical Durability test . 17
9.3.7 Conditioning procedures . 17
9.3.8 Shock test . 18
9.3.9 Vibration tests . 18
9.3.10 Opening, latching, actuation, resetting and impact tests . 19
9.4 Tests for EMC . 21
Annex A (normative) Procedure to determine reliability data for electrical emergency
stop devices used in functional safety applications . 22
A.1 General . 22
A.1.1 Object . 22
A.1.2 General requirements . 22
A.2 Terms, definitions and symbols . 22
A.3 Method based on durability test results . 22
A.3.1 General method . 22
A.3.2 Test requirements . 22
A.3.3 Number of samples . 23
A.3.4 Characterization of a failure mode . 23
A.3.5 Weibull Modelling . 23
A.3.6 Useful life and upper limit of failure rate. 23
A.3.7 Reliability data . 23
A.4 Data information . 23
A.5 Examples . 23
Annex B (normative) Special requirements for illuminated push-button type
emergency stop devices . 24
B.1 General . 24
B.2 Special requirements for an emergency stop device using illumination
function to signal whether the device is active or not. 24
Bibliography . 25
Figure 1 – Symbol (5638) for emergency stop . 11
Figure 2 – Hammer for tests . 20
Table 1 – Robustness of a push-button type actuator . 16
Table 2 – Relationship between the mounting hole and the hammer height . 20
121A/612/CDV 4 IEC CDV 60947-5-5 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 5-5: Control circuit devices and switching elements –
Electrical emergency stop device with mechanical latching function
FOREWORD
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
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