IEC 60730-1:2013/AMD2:2020

IEC 60730-1 ®
Edition 5.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 2
AM ENDEMENT 2
Automatic electrical controls –
Part 1: General requirements
Dispositifs de commande électrique automatiques –
Partie 1: Exigences générales
IEC 60730-1:2013-11/AMD2:2020-04(en-fr)

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IEC 60730-1 ®
Edition 5.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 2
AM ENDEMENT 2
Automatic electrical controls –

Part 1: General requirements
Dispositifs de commande électrique automatiques –

Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.120 ISBN 978-2-8322-8065-2

– 2 – IEC 60730-1:2013/AMD2:2020
 IEC 2020
FOREWORD
This amendment has been prepared by IEC technical committee 72: Automatic electrical
controls.
The text of this amendment is based on the following documents:
FDIS Report on voting
72/1226/FDIS 72/1237/RVD
Full information on the voting for the approval of this amendment can be found in the report on
voting indicated in the above table.
The committee has decided that the contents of this amendment and the base 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• withdrawn,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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
_____________
1 Scope and normative references
1.2 Normative references
Replace reference IEC 60664-3:2003 with the following:
IEC 60664-3:2016, Insulation coordination for equipment within low-voltage systems – Part 3:
Use of coating, potting or moulding for protection against pollution
Add the following references:
IEC 61051-1, Varistors for use in electronic equipment – Part 1: Generic specification
IEC 61051-2, Varistors for use in electronic equipment – Part 2: Sectional specification for surge
suppression varistors
IEC 61051-2-2, Varistors for use in electronic equipment – Part 2: Blank detail specification for
zinc oxide surge suppression varistors. Assessment level E

 IEC 2020
IEC 63044-3, Home and Building Electronic Systems (HBES) and Building Automation and
Control Systems (BACS) – Part 3: Electrical safety requirements
2 Terms and definitions
2.1 Definitions relating to ratings, voltages, currents, frequencies, and wattages
Replace Definitions 2.1.4 and 2.1.5 with the following:
2.1.4
extra-low voltage
ELV
voltage not exceeding the maximum values of 50 V AC (RMS), 70,7 V AC (peak) or 120 V DC
(ripple-free) between conductors and between conductors and earth which is permitted to be
maintained indefinitely under normal and single-fault conditions
Note 1 to entry: Ripple-free is conventionally defined as an RMS ripple voltage of not more than 10 % of the DC
component.
Note 2 to entry: The use of ELV other than in SELV system or PELV system is not a protective measure against
electric shock, this is in line with IEC 61140:2001.
2.1.5
safety extra-low voltage
SELV
voltage for use in SELV system or PELV system between simultaneously accessible part(s)
and between any accessible part and earth, not exceeding the limits of 30 V AC (RMS), 42,4 V
AC (peak) or 60 V DC (ripple free) under normal and single-fault condition, which is provided by
an independent source (such as safety isolating transformers, motor generators, and batteries)
or when obtained from higher voltage is obtained by a safety isolating transformer or a
converter with separate windings providing equivalent insulation
Note 1 to entry: The voltage limits are based on the assumption that the safety isolating transformer is supplied
at its rated voltage. For the purpose of the output test in 24.1.1, the secondary output voltage limit shall be increased
as specified in 17.2.2.
Note 2 to entry: Transformers used in converters that have separate windings and provide equivalent insulation
are covered under IEC 61558-2-6 and IEC 61558-2-16.
Note 3 to entry: SELV limits are defined regardless of any special condition which may occur in installation. Different
requirements may be specified in the relevant electrical installation standards (e.g. IEC 60364 (all parts)) or in the
applicable local regulations.
Note 4 to entry: Ripple-free is conventionally defined as an RMS ripple voltage of not more than 10 % of the DC
component.
Note 5 to entry: SELV limits may be different in other product or system standards. In case a control is declared
exclusively for use in applications governed by a different standard, the limits set by the application standard apply
(e.g. controls to be used exclusively in household appliances according IEC 60335 set of standards or connected
to HBES/BACS systems according to IEC 63044-3 accept different SELV voltage limits).
Add the following new definition:
2.3.33
mounting surface temperature
T
s max
declared maximum temperature to which the mounting surface of the control is intended to be
exposed including any likely overshoot once a control has operated

– 4 – IEC 60730-1:2013/AMD2:2020
 IEC 2020
2.13 Miscellaneous definitions
2.13.4
normal use
Add the following Note 3:
Note 3 to entry: Normal use may include standby mode, and one or more operating modes.
Add the following new definition:
2.13.12
intentionally weak trace
printed circuit board trace intended to rupture under conditions of abnormal operation to prevent
the occurrence of a condition which could impair compliance with this document
Note 1 to entry: See 11.1.4.
7 Information
7.2 Methods of providing information
Table 1 (7.2 of edition 3) – Required information and methods
of providing information (1 of 4)
Replace line 23, Line 43, line 76, line 86 and line 87 with the following:
Information Clause or Method
subclause
23 Maximum temperature of mounting surface (T ) if it differs by more than
6.12.2, 14.1, C
s max
17.3
20 K from T
max
j
6.4,11.4.11, D or E
43 Reset characteristics for cut-out action
11.4.12
76 Type of printed circuit board protection Annex P or X
Annex Q
86 For SELV or PELV circuits, the ELV limits realized 2.1.5, 8.1.1, T.3.2 X
87 Value of accessible voltage of SELV/PELV circuit, if different from 8.1.1, and the 2.1.4, 6.8.4.1, X
product standard(s) referred to for the application of the control, in which the 6.8.4.2, 8.1.1.1
accessible SELV/PELV level(s) is (are) given

8 Protection against electric shock
8.1 General requirements
8.1.1
Replace the second and third paragraphs with the following:
Unless otherwise specified, accessible parts connected to SELV systems or PELV systems
where the voltage does not exceed the SELV limits of 2.1.5 are not considered to be hazardous
live parts.
For accessible parts connected to a SELV system or a PELV system where the voltage
exceeds the SELV limits of 2.1.5 or the voltage limits declared in item 87 of Table 1, the current
measured between the simultaneously accessible parts and between accessible parts and
earth shall not exceed the limits in H.8.1.10.1 under fault-free (normal) and single-fault
conditions.
 IEC 2020
8.1.1.1
Replace the second dashed text and the Note with the following:
– if the manufacturer declares the application, product standard governing the application and
level of voltage for accessible SELV/PELV circuits considered to be non-hazardous by the
application standard (Table 1, requirement 87).
11 Constructional requirements
11.1 Materials
Add the following new subclause:
11.1.4 Intentionally weak traces
Intentionally weak traces shall be used only to protect against hazards caused by failure of
components included in Table H.24. See H.27.1.1.8.
11.4 Actions
11.4.11 Type 1.H or 2.H action
Add the following NOTE after the compliance criteria:
NOTE The test is given in the relevant part 2.
11.4.12 Type 1.J or 2.J action
Add in the last sentence before “–35 °C” the text “0 °C or”, so that it reads “0 °C or –35 °C”.
Add the following NOTE after the compliance criteria:
NOTE The test is given in the relevant part 2.
13.2 Electric strength
a
Table 12 (13.2 of edition 3) – Insulation or disconnection test voltages (1 of 2)
Replace in the row for Electronic disconnection in the most right column “–” with “2 × U” as
follows:
b, q
Insulation or disconnection to be
Test voltage for working voltage (U)
c, d
tested
e f
Working voltage
SELV Working voltage
f
≤ 50 V
50 V < U ≤ 690 V
m, n
100 100
Electronic disconnection  2 × U

14 Heating
Replace in 14.5.1 the text “different from T ” with “higher than T by more than 20 K as
max max
follows:
14.5.1 The temperature of the switch head is maintained between T and either
max
(T + 5) °C or 1,05 times T , whichever is greater. The temperature of any mounting surface
max max
– 6 – IEC 60730-1:2013/AMD2:2020
 IEC 2020
is maintained between
...