SIST EN IEC 60730-2-7:2021
(Main)Automatic electrical controls for household and similar use - Part 2-7: Particular requirements for timers and time switches
Automatic electrical controls for household and similar use - Part 2-7: Particular requirements for timers and time switches
IEC 60730-2-7:2015(E) applies to timers and time switches for household and similar use that may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air conditioning and similar applications. This standard is also applicable to individual timers utilized as part of a control system or timers which are mechanically integral with multifunctional controls having non-electrical outputs. This standard does not apply to time-delay switches (TDS) within the scope of IEC 60669-2-3. This standard applies to the inherent safety, to the operating characteristics where such are associated with equipment protection and to the testing of timers used in appliances and other apparatus, electrical and non-electrical, for household and similar purposes, but also extended to industrial purposes when no dedicated product standards exist, such as that for central heating, air conditioning, process heating, etc. Timers for equipment not intended for normal household use, but which nevertheless may be used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. This third edition cancels and replaces the second edition published in 2008. This third edition constitutes a technical revision. This new edition revises the compliance criteria of type 1.S and 2.S action, revises the requirements for filament lamp loads, adds requirements for abnormal operation in Annex H, removes some special requirements for single countries as well as updates the standard to IEC 60730-1:2010, fourth edition.
Key words: Timers, Time Switches
Automatische elektrische Regel- und Steuergeräte - Teil 2-7: Besondere Anforderungen an Zeitsteuergeräte und Schaltuhren
Dispositifs de commande électrique automatiques - Partie 2-7: Règles particulières pour les minuteries et les minuteries cycliques
IEC 60730-2-7:2015 s'applique aux minuteries et aux minuteries cycliques qui peuvent utiliser l'électricité, le gaz, le pétrole, un combustible solide, l'énergie thermique solaire, etc., ou une combinaison de ces énergies, y compris des applications de chauffage, de climatisation et analogues.
La présente norme s'applique également aux minuteries particulières qui sont utilisées en tant que parties d'un système de commande ou aux minuteries qui sont intégrées mécaniquement dans des dispositifs de commande multifonctions qui possèdent des sorties non électriques. La présente norme ne s'applique pas aux interrupteurs temporisés (Time-Delay Switches – TDS) qui relèvent du domaine d'application de l’IEC 60669-2-3.
La présente norme s'applique à la sécurité intrinsèque, aux caractéristiques de fonctionnement dans la mesure où elles interviennent dans la protection des matériels ainsi qu'aux essais des minuteries utilisées dans les appareils et autres appareillages, électriques et non électriques, à usage domestique et analogue, mais aussi avec une extension aux applications industrielles pour lesquelles il n'existe aucune norme de produit spécifique, telles que celles pour le chauffage central, la climatisation, la production de chaleur industrielle, etc.
Les minuteries pour les matériels qui ne sont pas prévus pour un usage domestique normal, mais qui peuvent néanmoins être utilisés par le grand public, comme les matériels prévus pour être utilisés par des profanes dans les magasins, dans l'industrie légère et dans les fermes, entrent dans le domaine d'application de la présente norme.
Cette troisième édition annule et remplace la deuxième édition parue en 2008. Cette troisième édition constitue une révision technique. La présente nouvelle édition révise les critères de conformité des actions de type 1.S et 2.S ainsi que les exigences pour les charges par lampes à filament, elle ajoute des exigences pour le fonctionnement anormal dans l'Annexe H, elle supprime une partie des exigences spécifiques à certains pays et elle met la norme à jour par rapport à l'IEC 60730-1:2010, quatrième édition.
Mots clés: minuteries, minuteries cycliques
La présente partie 2-7 est destinée à être utilisée conjointement avec l'IEC 60730-1:2013.
Avtomatske električne krmilne naprave - 2-7. del: Posebne zahteve za stikalne ure in časovna stikala
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 60730-2-7:2021
01-junij-2021
Nadomešča:
SIST EN 60730-2-7:2010
SIST EN 60730-2-7:2010/AC:2012
Avtomatske električne krmilne naprave - 2-7. del: Posebne zahteve za stikalne ure
in časovna stikala
Automatic electrical controls for household and similar use - Part 2-7: Particular
requirements for timers and time switches
Ta slovenski standard je istoveten z: EN IEC 60730-2-7:2020
ICS:
39.040.99 Drugi merilniki časa Other time-measuring
instruments
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST EN IEC 60730-2-7:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN IEC 60730-2-7:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 60730-2-7:2021
EUROPEAN STANDARD EN IEC 60730-2-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2020
ICS 97.120 Supersedes EN 60730-2-7:2010 and all of its
amendments and corrigenda (if any)
English Version
Automatic electrical controls - Part 2-7: Particular requirements
for timers and time switches
(IEC 60730-2-7:2015)
Dispositifs de commande électrique automatiques - Partie Automatische elektrische Regel- und Steuergeräte - Teil 2-
2-7: Règles particulières pour les minuteries et les 7: Besondere Anforderungen an Zeitsteuergeräte und
minuteries cycliques Schaltuhren
(IEC 60730-2-7:2015) (IEC 60730-2-7:2015)
This European Standard was approved by CENELEC on 2015-04-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60730-2-7:2020 E
---------------------- Page: 3 ----------------------
SIST EN IEC 60730-2-7:2021
EN IEC 60730-2-7:2020 (E)
European foreword
The text of document 72/926/CDV, future edition 3 of IEC 60730-2-7, prepared by IEC/TC 72
"Automatic electrical controls" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60730-2-7:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-11-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-05-01
document have to be withdrawn
This document supersedes EN 60730-2-7:2010 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association.
.
Endorsement notice
The text of the International Standard IEC 60730-2-7:2015 was approved by CENELEC as a
European Standard without any modification.
n the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60669-2-3:2006 NOTE Harmonized as EN 60669-2-3:2006 (not modified)
2
---------------------- Page: 4 ----------------------
SIST EN IEC 60730-2-7:2021
EN IEC 60730-2-7:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Annex ZA of EN 60730-1 is applicable with the following additions:
Publication Year Title EN/HD Year
IEC 60669-1 (mod) 1998 Switches for household and similar fixed- EN 60669-1 1999
electrical installations -- Part 1: General
requirements
+ A1 (mod) 1999 + A1 2002
+ A2 (mod) 2006 + A2 2008
IEC 60695-11-10 2013 Fire hazard testing - Part 11-10: Test EN 60695-11-10 2013
flames - 50 W horizontal and vertical flame
test methods
3
---------------------- Page: 5 ----------------------
SIST EN IEC 60730-2-7:2021
---------------------- Page: 6 ----------------------
SIST EN IEC 60730-2-7:2021
IEC 60730-2-7
®
Edition 3.0 2015-03
INTERNATIONAL
STANDARD
Automatic electrical controls –
Part 2-7: Particular requirements for timers and time switches
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.120 ISBN 978-2-8322-2432-8
Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN IEC 60730-2-7:2021
– 2 – IEC 60730-2-7:2015 © IEC 2015
CONTENTS
FOREWORD . 3
1 Scope and normative references . 6
2 Definitions . 7
3 General requirements . 8
4 General notes on tests . 8
5 Rating. 8
6 Classification . 8
7 Information . 9
8 Protection against electric shock . 10
9 Provision for protective earthing . 10
10 Terminals and terminations . 10
11 Constructional requirements . 10
12 Moisture and dust resistance . 11
13 Electric strength and insulation resistance . 11
14 Heating . 11
15 Manufacturing deviation and drift . 11
16 Environmental stress . 12
17 Endurance . 12
18 Mechanical strength . 17
19 Threaded parts and connections . 17
20 Creepage distances, clearances and distances through solid insulation . 17
21 Resistance to heat, fire and tracking . 17
22 Resistance to corrosion . 17
23 Electromagnetic compatibility (EMC) requirements – emission . 17
24 Components . 18
25 Normal operation . 18
26 Electromagnetic compatibility (EMC) requirements – immunity . 18
27 Abnormal operation . 18
28 Guidance on the use of electronic disconnection . 18
Annex H (normative) Requirements for electronic controls . 19
Annex AA (normative) Number of cycles, automatic and manual action . 23
Bibliography . 24
Table 14 – Electrical conditions for the overvoltage test . 13
Table 15 – Electrical conditions for the overload tests of 17.7 and 17.10 . 13
Table 16 – Electrical conditions for the overload tests of 17.8, 17.9, 17.11, 17.12 and
17.13 . 13
Table 101 – Electrical conditions for overload and endurance testing. 16
Table AA.1 – Values for free standing, independently mounted and in-line cord timers
a
and time switches . 23
---------------------- Page: 8 ----------------------
SIST EN IEC 60730-2-7:2021
IEC 60730-2-7:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-7: Particular requirements
for timers and time switches
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 on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative 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 responsible for identifying any or all such patent rights.
International Standard IEC 60730-2-7 has been prepared by IEC technical committee 72:
Automatic electrical controls.
This third edition cancels and replaces the second edition published in 2008. This third edition
constitutes a technical revision. This new edition revises the compliance criteria of type 1.S
and 2.S action, revises the requirements for filament lamp loads, adds requirements for
abnormal operation in Annex H, removes some special requirements for single countries as
well as updates the standard to IEC 60730-1:2010, fourth edition.
This Part 2-7 is intended to be used in conjunction with IEC 60730-1. It was established on
the basis of the fourth edition (2010) of that publication. IEC 60730-1 Ed. 5 is available, and
this part 2-7 will be aligned with that edition in the future. Consideration may be given to
future editions of, or amendments to, IEC 60730-1.
---------------------- Page: 9 ----------------------
SIST EN IEC 60730-2-7:2021
– 4 – IEC 60730-2-7:2015 © IEC 2015
The title of IEC 60730-2-7 Ed.3 has been updated to the title of IEC 60730-1 Ed.5.0. However,
IEC 60730-2-7 Ed.3.0 has not been updated in accordance with the technical requirements in
IEC 60730-1 Ed. 5.0.
This Part 2-7 supplements or modifies the corresponding clauses in IEC 60730-1 so as to
convert that publication into the IEC standard: Particular requirements for timers and time
switches.
Where this Part 2-7 states "addition", "modification" or "replacement", the relevant require-
ment, test specification or explanatory matter in Part 1 should be adapted accordingly.
Where no change is necessary, this Part 2-7 indicates that the relevant clause or subclause
applies.
In the development of a fully international standard, it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
The “in some countries” notes regarding differing national practice are contained in the
following clauses and subclauses:
– 6.3.6.101
– Table 1, Notes 101 and 103
– 7.2.9
– 11.4.104
– 17.16.101.1
– 17.16.101.3
– 17.16.103.1
– Table 15, Notes 101 and 102
– Table 16, Notes 101 and 102
– 21.101
– Annex D
– H.26.11
In this publication:
1) The following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Explanatory matter: in smaller roman type
2) Subclauses, notes, tables or figures which are additional to those in Part 1 are numbered
starting from 101, additional annexes are lettered AA, BB, etc.
The text of this standard is based on the following documents:
CDV Report on voting
72/926/CDV 72/959/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.
---------------------- Page: 10 ----------------------
SIST EN IEC 60730-2-7:2021
IEC 60730-2-7:2015 © IEC 2015 – 5 –
A list of all parts of the IEC 60730 series, under the general title: Automatic electrical controls,
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At 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.
---------------------- Page: 11 ----------------------
SIST EN IEC 60730-2-7:2021
– 6 – IEC 60730-2-7:2015 © IEC 2015
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-7: Particular requirements
for timers and time switches
1 Scope and normative references
This clause of Part 1 is applicable except as follows:
1.1 Replacement:
In general, this part of IEC 60730 applies to timers and time switches that may use electricity,
gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air
conditioning and similar applications.
This standard is also applicable to individual timers utilized as part of a control system or
timers which are mechanically integral with multifunctional controls having non-electrical
outputs. This standard does not apply to time-delay switches (TDS) within the scope of
IEC 60669-2-3.
NOTE 1 Throughout this standard, the word “timers” means timers and time switches, unless the type is
specifically mentioned.
NOTE 2 Devices which only indicate time or passage of time are not included.
NOTE 3 This standard does not apply to multi-functional controls having an integrated timing function which is not
capable of being tested as a separate timing device.
1.1.1 Replacement:
This standard applies to the inherent safety, to the operating characteristics where such are
associated with equipment protection and to the testing of timers used in appliances and other
apparatus, electrical and non-electrical, for household and similar purposes, but also
extended to industrial purposes when no dedicated product standards exist, such as that for
central heating, air conditioning, process heating, etc.
Timers for equipment not intended for normal household use, but which nevertheless may be
used by the public, such as equipment intended to be used by laymen in shops, in light
industry and on farms, are within the scope of this standard.
This standard is also applicable to timers for appliances within the scope of IEC 60335-1.
1.1.2 Replacement:
This standard applies to manual controls when such are electrically and/or mechanically
integral with timers.
1.4 Replacement:
This standard applies also to timers incorporating electronic devices, requirements for which
are contained in Annex H.
This standard applies also to timers using NTC or PTC thermistors, requirements for which
are contained in Part 1, Annex J.
---------------------- Page: 12 ----------------------
SIST EN IEC 60730-2-7:2021
IEC 60730-2-7:2015 © IEC 2015 – 7 –
1.5 Normative references
This subclause of Part 1 applies except as follows:
Addition:
IEC 60669-1:1998, Switches for household and similar fixed-electrical installations – Part 1:
1
General requirements
IEC 60669-1:1998/AMD1:1999
IEC 60669-1:1998/AMD2:2006
IEC 60695-11-10:2013, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and
vertical flame test methods
2 Definitions
This clause of Part 1 is applicable except as follows:
2.3 Definitions relating to the function of controls
Additional definition:
2.3.101
timing cycle
program including all the switching activities involved in a start-to-finish operation of a
controlled appliance
2.5 Definitions of types of control according to construction
Additional definitions:
2.5.101
plug-in timer
timer or time switch designed for direct plug-in to a socket-outlet
Note 1 to entry: The plug-in timer is equipped with conductor blades, pins or other means, protruding from the
enclosure of the control or the control body itself, to match the dimensional parameters of the socket-outlet to
which the control will be connected.
2.5.102
TV timer
control for television equipment that can be set by the user, switching very high inrush
currents of a very short duration generated by electrical power supply components and
associated electronic component parts with various electrical characteristics
Note 1 to entry: Examples are power transformers, electronic tube filaments, large electric capacitors and others
in television receivers, radio and video products.
2.5.103
synchronous timer
timer or a time switch in which the transmission is effected by a device that is time-based on
the frequency of the power supply for the prime mover or the load
2.5.104
hand-wound timer
timer or time switch in which the transmission is provided by actuation
___________
1
There exists a consolidated edition 3.2 (2007) that includes IEC 60669-1:2008 and its Amendments 1 and 2.
---------------------- Page: 13 ----------------------
SIST EN IEC 60730-2-7:2021
– 8 – IEC 60730-2-7:2015 © IEC 2015
3 General requirements
This clause of Part 1 is applicable.
4 General notes on tests
This clause of Part 1 is applicable.
5 Rating
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable except as follows:
6.3 According to their purpose
6.3.6 Additional subclause:
6.3.6.101 – TV timer;
NOTE In Canada and the USA, timers for use on televisions have to be declared and tested as indicated in this
standard.
6.4 According to features of automatic action
6.4.3 Additional subclauses:
6.4.3.101 – a timing action which automatically resets upon loss of the electrical supply
(Type 1.Q or 2.Q);
6.4.3.102 – a timing action which is interrupted upon loss of the electrical supply and
resumes at the point of interruption upon restoration of the electrical supply (Type 1.R or 2.R);
6.4.3.103 – a timing action of a time switch which, after interruption of the electrical supply
for any interval up to the declared period of power reserve, resumes its intended operating
sequence as if no interruption of the supply has occurred (Type 1.S or 2.S);
6.4.3.104 – a timing action with a declared running accuracy in an ambient temperature of
20 °C to 25 °C (Type 1.T or 2.T);
6.4.3.105 – a timing action in which the difference between set time and actual switching
time does not exceed the declared amount (Type 1.U or 2.U).
6.10 According to number of cycles of actuation (M) of each manual actuation
Additional subclauses:
6.10.101 – 500 cycles;
6.10.102 – 2 500 cycles;
6.10.103 – 5 000 cycles.
---------------------- Page: 14 ----------------------
SIST EN IEC 60730-2-7:2021
IEC 60730-2-7:2015 © IEC 2015 – 9 –
6.15 According to construction
Additional subclause:
6.15.101 – plug-in timer.
7 Information
This clause of Part 1 is applicable except as follows:
7.2 Methods of providing information
7.2.9 Addition:
NOTE In Germany, for Type 1.S or 2.S actions, the power reserve is to be marked on the timer by the letter "R",
followed by the duration of the power reserve, followed by the symbol indicating the time unit as follows:
minutes min
hours h
days d
years a
Table 1
Modification:
Replace the lines corresponding to items 7, 26, 27 and 28 by the following:
Information Clause or Method
subclause
6.2
7) 101)
7 The type of load controlled by each circuit 14 C
17
102)
26 Number of cycles of actuation (M) for each manual action 6.10 X
102)
27 Number of automatic cycles (A) for each automatic action 6.11 X
102)
28 Ageing period (Y) for Type 1.M or 2.M action 6.16 X
Add the following additional items:
Information Clause or Method
subclause
103)
101 TV timer 2.5.102 C
102 Power reserve duration 6.4.3.103 D
103 Running time for manually wound switches 11.4.103 D
6.4.3.104
104 Running accuracy and setting accuracy 6.4.3.105 X
11.4.104
---------------------- Page: 15 ----------------------
SIST EN IEC 60730-2-7:2021
– 10 – IEC 60730-2-7:2015 © IEC 2015
Add the following additional notes:
101) In Canada and the USA, timers with a tungsten-filament lamp load rating or direct current as well as
alternating current, in addition to the regular electrical information shall be marked to indicate the type of
load, type of current and rated voltage.
The marking shall be "T" for controls used with direct as well as alternating current and "L" for controls
used on alternating current only. The marking shall follow the unique type reference or the electrical
rating of the control.
102) Values for in-line cord, free-standing and independently mounted controls are given in Annex AA (see
also 17.1.3.101).
103) In Canada and the USA, a timer with a TV rating shall be marked with the manufacturer's name or
trademark, load type designation and electrical rating. The marking shall consist of "TV" followed by the
ampere rating. This rating shall follow any other electrical rating the control may have or can be a single,
stand-alone marking if the control has no additional ratings.
8 Protection against electric shock
This clause of Part 1 is applicable.
9 Provision for protective earthing
This clause of Part 1 is applicable.
10 Terminals and terminations
This clause of Part 1 is applicable.
11 Constructional requirements
This clause of Part 1 is applicable except as follows:
11.4 Actions
Additional subclauses:
11.4.101 Type 1.Q or 2.Q action
A Type 1.Q or 2.Q action shall be so designed that it resets automatically upon loss of the
electrical supply.
Compliance is checked by inspection and by test.
11.4.102 Type 1.R or 2.R action
A Type 1.R or 2.R action shall be so designed that it is interrupted upon loss of the electrical
supply and resumes at the point of interruption upon restoration of the electrical supply.
Compliance is checked by inspection and by test.
11.4.103 Type 1.S or 2.S action
A Type 1.S or 2.S action shall be so designed that, after interruption of the electrical supply
for any interval up to the declared period of power reserve, it resumes its intended operating
sequence as if no interruption of the supply has occurred.
---------------------- Page: 16 ----------------------
SIST EN IEC 60730-2-7:2021
IEC 60730-2-7:2015 © IEC 2015 – 11 –
If the energy store is charged by the supply voltage, then compliance is checked by a
functional test, carried out immediately after the operation of the timer switches into power
reserve. The previous operation in power reserve shall be the declared period of power
reserve. Charging is carried out at rated voltage for 48 h, if no other charging period is
declared.
If the running reserve is provided by a primary battery, compliance shall be verified by
calculation of the power reserve by means of the battery capacity and the measured
discharge current.
11.4.104 Type 1.T or 2.T action
A Type 1.T or 2.T action shall be so designed that its running accuracy in an ambient
temperature of 20 °C to 25 °C is as declared.
NOTE 1 In Germany, the running accuracy for time switches shall be within ±60 s per day. For the power reserve
period of synchronous time switches (Type S.T), the running accuracy shall be within ±500 s per day.
NOTE 2 In Germany, the deviation from the calculated elapsed time shall be less than 30 min per year, relative to
actual elapsed time under fluctuations of 0,85 times to 1,1 times rated voltage and ±2 % rated frequency.
Compliance is checked by inspection and by test.
11.4.105 Type 1.U or 2.U action
A Type 1.U or 2.U action shall be so designed that its setting means, dial assembly, indicating
devices and switch operating means function so that the difference between set time and
actual time shall not be more than the declared
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.