SIST EN 60730-2-5:2015/A1:2019
(Amendment)Automatic electrical controls - Part 2-5: Particular requirements for automatic electrical burner control systems
Automatic electrical controls - Part 2-5: Particular requirements for automatic electrical burner control systems
2018-12-12: D161/C021: make available the standard without offering it for citation.
2018-09-17: following plenary meeting, TC agrees to publish without any link to LVD, EMC. CLC/BT approval needed. To use PR=63458 for providing Annexes and Common Modifications, which are not ready yet.
included CM (63458)
2017-10-03 - Cannot allocate for publication due to missing assessment from Consultant.
Automatische elektrische Regel- und Steuergeräte für den Hausgebrauch und ähnliche Anwendungen - Teil 2-5: Besondere Anforderungen an automatische elektrische Brenner-Steuerungs- und Überwachungssysteme
Dispositifs de commande électrique automatiques - Partie 2-5: Exigences particulières pour les systèmes de commande électrique automatiques des brûleurs
Avtomatske električne krmilne naprave - 2-5. del: Posebne zahteve za avtomatske električne krmilne sisteme gorilnikov
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60730-2-5:2015/A1:2019
01-junij-2019
Avtomatske električne krmilne naprave - 2-5. del: Posebne zahteve za avtomatske
električne krmilne sisteme gorilnikov
Automatic electrical controls - Part 2-5: Particular requirements for automatic electrical
burner control systems
Automatische elektrische Regel- und Steuergeräte für den Hausgebrauch und ähnliche
Anwendungen - Teil 2-5: Besondere Anforderungen an automatische elektrische
Brenner-Steuerungs- und Überwachungssysteme
Dispositifs de commande électrique automatiques - Partie 2-5: Exigences particulières
pour les systèmes de commande électrique automatiques des brûleurs
Ta slovenski standard je istoveten z: EN 60730-2-5:2015/A1:2019
ICS:
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST EN 60730-2-5:2015/A1:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60730-2-5:2015/A1:2019
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SIST EN 60730-2-5:2015/A1:2019
EUROPEAN STANDARD EN 60730-2-5:2015/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2019
ICS 97.120
English Version
Automatic electrical controls - Part 2-5: Particular requirements
for automatic electrical burner control systems
(IEC 60730-2-5:2013/A1:2017)
Dispositifs de commande électrique automatiques - Partie Automatische elektrische Regel- und Steuergeräte - Teil 2-
2-5: Exigences particulières pour les systèmes de 5: Besondere Anforderungen an automatische elektrische
commande électrique automatiques des brûleurs Brenner-Steuerungs- und Überwachungssysteme
(IEC 60730-2-5:2013/A1:2017) (IEC 60730-2-5:2013/A1:2017)
This amendment A1 modifies the European Standard EN 60730-2-5:2015; it was approved by CENELEC on 2018-12-13. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60730-2-5:2015/A1:2019 E
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SIST EN 60730-2-5:2015/A1:2019
EN 60730-2-5:2015/A1:2019 (E)
European foreword
The text of document 72/1084/FDIS, future IEC 60730-2-5/A1, prepared by IEC/TC 72 "Automatic
electrical controls" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN 60730-2-5:2015/A1:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-10-12
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-04-12
document have to be withdrawn
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 60730-2-5:2013/A1:2017 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60947 (series) NOTE Harmonized as EN 60947 (series)
IEC 62282-3-100 NOTE Harmonized as EN 62282-3-100
2
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SIST EN 60730-2-5:2015/A1:2019
EN 60730-2-5:2015/A1:2019 (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.
Add the following references:
Publication Year Title EN/HD Year
IEC 60079-20-1 2010 Explosive atmospheres - Part 20-1: EN 60079-20-1 2010
Material characteristics for gas and vapour
classification - Test methods and data
ISO 23551-6 2014 Safety and control devices for gas burners - -
and gas-burning appliances - Particular
requirements - Part 6: Thermoelectric
flame supervision controls
Replacement:
IEC 60127-1 2006 Miniature fuses - Part 1: Definitions for EN 60127-1 2006
miniature fuses and general requirements
for miniature fuse-links
3
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SIST EN 60730-2-5:2015/A1:2019
IEC 60730-2-5
®
Edition 4.0 2017-08
INTERNATIONAL
STANDARD
AMENDMENT 1
Automatic electrical controls –
Part 2-5: Particular requirements for automatic electrical burner control systems
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.120 ISBN 978-2-8322-4747-1
Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission
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SIST EN 60730-2-5:2015/A1:2019
– 2 – IEC 60730-2-5:2013/AMD1:2017
© IEC 2017
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
72/1084/FDIS 72/1103/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.
A bilingual version of this publication may be issued at a later date.
_____________
1 Scope and normative references
Replace Subclause 1.1 by the following:
1.1 Scope
This part of IEC 60730 applies to automatic electrical burner control systems for the
automatic control of burners for oil, gas, coal or other combustibles intended to be used
• for household and similar use,
• in shops, offices, hospitals, farms and commercial and industrial applications.
This International Standard is applicable
• to a complete burner control system,
• to a separate programming unit,
• to a separate electronic high-voltage ignition source,
• to a separate flame detector and
• to a separate high-temperature operation (HTO) detector.
NOTE 1 Throughout this document, where it can be used unambiguously, the word "system" means "burner
control system" and "systems" means "burner control systems".
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NOTE 2 Throughout this document, the word "equipment" means "appliance and equipment."
This standard does not apply to thermoelectric flame supervision controls; thermoelectric
flame supervision controls are covered by ISO 23551-6.
This document also applies to electrical burner control systems intended exclusively for
industrial process applications e.g. those applications covered by ISO TC 244 (ISO 13577).
1.1.1 This document applies to the inherent safety, to the declared operating values,
operating times and operating sequences where such are associated with burner safety
and to the testing of automatic electrical burner control systems used in, on, or in
association with, burners.
NOTE Requirements for specific operating values, operating times and operating sequences are given in the
standards for appliances and equipment.
1.1.2 This document applies to AC or DC powered systems with a rated voltage not
exceeding 660 V AC or 600 V DC.
1.1.3 This document does not take into account the response value of an automatic action
of a control, if such a response value is dependent upon the method of mounting the
control in the equipment. Where a response value is of significant purpose for the protection
of the user, or surroundings, the value defined in the appropriate equipment standard or as
determined by the manufacturer applies.
1.1.4 This document applies also to systems incorporating electronic devices, requirements
for which are contained in Annex H.
1.1.5 This document applies to systems using NTC or PTC thermistors, additional
requirements for which are contained in Annex J.
1.1.6 This document includes systems responsive to flame properties and temperature for
HTO.
Delete Subclauses 1.2, 1.3 and 1.4.
1.5 Renumber this subclause as follows:
1.2 Normative references
Delete reference to IEC 61643-11.
Add the following new references to the existing list:
IEC 60079-20-1:2010, Explosive atmospheres – Part 20-1: Material characteristics for gas
and vapour classification – Test methods and data
ISO 23551-6:2014, Safety and control devices for gas burners and gas-burning appliances –
Particular requirements – Part 6: Thermoelectric flame supervision controls
Add the following instruction:
Replacement:
IEC 60127-1:2015, Miniature fuses – Part 1: Definitions for miniature fuses and general
requirements for miniature fuse-links
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2 Definitions
Replace the title of Clause 2 by the following:
2 Terms and definitions
Add, after 2.2 Definitions of types of control according to purpose, the following note:
NOTE Definition 2.2.23 is not applicable.
2.2.101
burner control system
Replace the existing definition by the following:
system which includes a programming unit, a flame detector or, if applicable, an HTO
detector and may include an ignition source and/or ignition device and which monitors the
operation of fuel burners
Note 1 to entry: The various functions of the system may be in one or more housings.
Add the following new terms and definitions:
2.2.108
HTO detector
device which provides the programming unit with a signal indicating presence or absence of
HTO
Note 1 to entry: It includes the HTO-sensor and may include an amplifier and a relay for signal transmission.
The amplifier and relay may be in its own housing or combined with the programming unit.
2.2.109
HTO-sensor
device which senses the temperature of a surface or a medium within the combustion
chamber which is in direct contact with a flammable fuel-air mixture and provides a signal
indicating presence or absence of HTO
2.2.110
auto-ignition temperature
AIT
lowest temperature (of a hot surface or the environment) at which an ignition of a flammable
fuel/air mixture occurs
[SOURCE: IEC 60079-20-1:2010,3.3, modified : "or the environment" has been added in the
parenthesis, "at which under specified test conditions" has been deleted and " flammable gas
or vapour in mixture with air or air/inert gas" has been replaced by " flammable fuel/air
mixture"]
2.2.111
high-temperature operation
HTO
operation on the basis of auto-ignition temperature which assures ignition and burning of
fuel
Note 1 to entry: High-temperature operation is used e.g. in fuel cells (IEC 62282-3-100) and in industrial
furnaces and associated processing equipment (ISO 13577) where ignition and burning is detected by means of
sensing the temperature.
Add the following new definition 2.3.32:
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© IEC 2017
2.3.32
safety shut-down
Replacement:
de-energization of the main fuel flow means as the result of the action of a limiter, a cut-out or
the detection of an internal fault of the system
Note 1 to entry: Safety shut-down may include additional actions by the system.
2.3.107
Add “flame failure response time” below the term “flame failure lock-out time”.
2.3.117
Add “proved igniter system” below the term “proved igniter”.
2.3.121
running position
Replace the definition by the following:
position denoting that the main burner flame is established and supervised, or the burner is in
HTO and supervised
2.3.122
Add “Void” after term number and delete the term and definition.
Add the following new terms and definitions:
2.3.132
HTO detector response time
period of time between the temperature falling below the defined temperature limit for HTO
and the signal indicating the absence of HTO
2.3.133
HTO detector operating characteristics
that function of the HTO detector which indicates absence or presence of HTO as the output
signal of the HTO detector relating to the input signal
Note 1 to entry: Normally the input signal is provided by a HTO-sensor.
2.3.134
HTO response time
period of time between the signal indicating absence of HTO and proceeding to safety shut-
down or to switch over to flame supervision
2.3.135
HTO signal
output signal of the HTO detector
4 General notes on tests
4.2.1
Replace the word "inclusive" by the words “including the relevant annexes” in the third
sentence between the words “Clauses 18 to 26” and “may” to read "the tests of Clauses 18 to
26 including the relevant annexes".
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6 Classification
6.3 According to their purpose
Add the following subclauses:
6.3.107 – HTO detector;
6.3.108 – HTO-sensor.
6.11
In the note, replace “In the countries members of CENELEC” by “In member countries of
CENELEC”.
7 Information
7.2.9
Table 1
Replace title of Table 1 on the first page by the following:
Table 1 (7.2 of edition 3) – Required information and methods of providing information
(1 of 2)
Replace title of Table 1 on the second page by the following:
Table 1 (7.2 of edition 3) – Required information and methods of providing information
(2 of 2)
"7)" “b”
In requirement 7, replace superscript by superscript after “circuit”.
"8)" “c”
In requirement 15, replace superscript by superscript after “enclosure”.
"5)" “e”
In requirement 31, replace superscript by superscript after “component”.
In requirement 103, add “or Maximum flame failure response time”.
Add the following:
139 The defined temperature limit for HTO 11.3.114 D
140 HTO detector response time 11.3.114 D
10 Terminals and terminations
10.2.4.101 Direct plug-in connections
In the first sentence, replace “part 2-5” by “document”.
11 Constructional requirements
Delete subclauses 11.1 and 11.1.2.
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© IEC 2017
Replace 11.3.5.2 by the following:
11.3.5.2 Systems of class C control functions shall include at least two switching elements
to directly de-energize the safety relevant terminals.
NOTE 1 The burner control system is a class C control function.
NOTE 2 A single relay operating two independent contacts is considered to be only one switching element.
Designs where relays are used as switching elements, a non-replaceable fuse (see
Table H.24 Note I) in series with two independent relay contacts with I fuse < 0,6 * I relay,
N e
are considered to comply with the following requirements for prevention of common cause
failure.
NOTE 3 I : values for the fuse (see IEC 60127-1:2015, 3.16);
N
I : rated operational current of the contact (see IEC 60947-1:2007; 4.3.2.3)
e
In Part 1, the term
• “safety related output terminals” is equivalent to “valve terminals”.
• “safety shut-down” shall be used as defined in this document,
• “control” shall be used as “burner control systems”.
11.3.5.2.1 Measures to protect against common cause failures
Delete this subclause.
11.3.108.6
In the first sentence, after “flame failure lock-out time”, add “or flame failure response time”.
Add the following new subclause:
11.3.114 For controls intended for HTO using HTO-sensors, the temperature shall be
monitored. In the event the temperature falls below the defined temperature limit for HTO, the
control shall proceed to safety shut-down or switch over to flame supervision (e.g.
ionization, UV, IR etc.). This function (including sensor, detector and programming unit) shall
be a class C control function with type 2 action.
The defined temperature limit for HTO (see Table 1, requirement 139) shall be the
temperature value, which includes the auto-ignition temperature, given in IEC 60079-20-1 or
otherwise specified by the product standard, and the tolerances of the signal processing
circuit including the sensor.
11.4 Actions
11.4.3 Type 2 action
Replace the text of the replacement by the following:
Any type 2 action shall be so designed that the manufacturing deviation and drift of its
operating value, operating time or operating sequence is within the limits declared in
Table 1, requirements 46, 101 to 115 inclusive, 123 to 125 inclusive, 139 and 140.
11.101.4
Replace the existing text by the following:
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An open circuit of the flame sensor/HTO-sensor or its connecting cables shall cause loss of
the flame signal/HTO-sensor signal.
11.101.6
Delete the compliance statement after the first paragraph.
Add the following new subclause:
11.101.7 HTO-sensors shall only react to temperature.
NOTE For selecting the position of the HTO-sensor in the application, the effect of exposing it to radiant heat
directly from the flame is taken into account.
Compliance with 11.101.1 to 11.101.7 inclusive is checked by inspection, test and/or
measurement.
15 Manufacturing deviation and drift
15.1
Replace the existing text by the following:
Systems shall have adequate consistency of manufacture with regard to their declared
operating times, operating sequences, flame detector operating characteristics, HTO
detector operating characteristics and proved igniter operating value.
15.3
Replace the existing text by the following:
The appropriate operating time, operating sequence, flame detector operating
characteristics, HTO detector operating characteristics and proved igniter operating
value shall be recorded for the sample.
15.4
Replace the existing text by the following:
Three tests shall be conducted for each operating time, each operating sequence, flame
detector operating characteristics, HTO detector operating characteristics and each
proved igniter operating value declared.
15.5 Operating times
In the third paragraph, add the following to item c):
c) or flame failure response time;
Add the following new item t):
t) HTO detector response time.
15.7 Flame detector operating characteristics and proved igniter operating value
Replace the existing title and text by the following:
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© IEC 2017
15.7 Flame detector operating characteristics, HTO detector operating characteristics
and proved igniter operating value
The operating characteristics of flame detectors, HTO detector and proved igniter
operating value shall be measured under the following conditions:
a) at V and (20 ± 5) °C;
R
b) at 0,85 V and 0 °C or T , whichever is lower, and
R min
c) at 1,1 V and 60 °C or T , whichever is higher.
R max
The measured values shall be as declared in Table 1 requirements 123, 124, 125, 132 and
139 as applicable.
The details of the measuring equipment shall be arranged between the manufacturer and the
test house.
If a lamp is used for response to the visible range of light, it shall have a colour temperature
of 2 856 K.
NOTE The preceding paragraph is not applicable in the USA and Canada.
17 Endurance
17.16.102.1 Test sequence and conditions
In the second paragraph, after “flame detector”, add “and/or HTO detector”.
After the second paragraph, add the following:
The HTO function, if applicable shall be included in the sequence.
17.16.108 Evaluation of compliance
Replace the first paragraph by the following:
After completion of all applicable tests of 17.16.101 to 17.16.107 inclusive, the sample shall
be retested according to Clause 15. The operating times, operating sequence, flame
detector operating characteristics, HTO detector operating characteristics and proved
igniter operating value shall be as declared in Table 1.
23 Electromagnetic compatibility (EMC) requirements – emission
In the title, replace “emission” by “Emission".
26 Electromagnetic compatibility (EMC) requirements – immunity
In the title, replace “immunity” by “Immunity”.
Annex H – Requirements for electronic controls
Add the following new clause:
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H.6 Classification
This clause of Part 1 is applicable except as follows:
H.6.18.2
Addition:
The reset from lock-out function as specified in 11.102 is a class B control function.
H.6.18.3
Addition:
Burner control systems as specified in 11.3.101 to 11.3.113 inclusive are class C control
functions.
H.26 Electromagnetic compatibility (EMC) requirements – Immunity
H.26.2
Replace “H.26.5” by “H.26.4”.
Add the following new subclause:
H.26.4 Harmonics and interharmonics including mains signalling at a.c. power port,
low frequency immunity tests
Addition:
The test shall be performed
a) during stand-by time;
b) during start-up period;
d) in the running position;
e) in the lock-out position.
The system shall tolerate harmonics and interharmonics including mains signalling at a.c.
power port, so that, when tested in accordance with H.26.4, either it shall continue to function
in accordance with the requirements of this document or it may proceed to safety shut-down,
which may be followed by a system restart or, if in volatile lock-out, it may proceed to a
system restart.
NOTE 101 Non-volatile lock-out excludes the use of system restart.
H.26.5 Voltage dips and voltage interruptions in the power supply network
Replace the subclause title by the following:
H.26.5 Voltage dips, voltage interruptions and voltage variations in the power supply
network
Add the following new subclause:
H.26.5.1.2 Test procedure for voltage dips and interruptions
Addition:
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© IEC 2017
The test shall be performed three times in each of the following operating modes:
a) during pre-purge or waiting time;
b) during start-up lock-out time(s);
c) in the running position;
d) in the lock-out position.
Between the voltage dips, short interruptions and voltage variations, a waiting time of at
least 10 s shall be observed.
The system shall tolerate voltage dips and short interruptions in the electricity supply in
accordance with the requirements of Table H.14.
Compliance shall be as follows:
1) Duration of half and one cycle of the supply waveform: it shall continue to function in
accordance with the requirements of this document. It shall neither proceed to safety
shut-down or lock-out, nor shall it reset from lock-out;
2) Duration of 2,5, 25 and 50 cycles: either it shall perform as in a) or it may proceed to
safety shut-down followed by a system restart or, if in volatile lock-out, it may proceed
to a system restart.
NOTE 101 Non-volatile lock-out excludes the use of system restart.
When the power supply is restored, the system restart shall comply with the requirements for
a start-up sequence.
Requirement 2) can be ignored, provided that the power failure is less than 60 s and occurs
within 60 s after call for heat. On restoration of the power, the programme may be continued
from the point at which it was interrupted.
A shortened start-up sequence, for example, a start-up sequence without pre-purge or
waiting time, is allowed, provided that the power failure occurs within 60 s after the end of
the start-up sequence and is shorter than 60 s.
H.26.5.2 Test values
Replace the title and text by the following:
H.26.5.2 Voltage variation test
H.26.5.2.1 Test levels for voltage variations
The duration and test values in Table H.101 shall be applied.
Add the following new subclause:
H.26.5.2.2 Test procedure
Replacement:
The control shall operate according to the functional specification (see 11.3.105) at least
+10
within the voltage tolerance band of the rated voltage %, and below – 15 % of the rated
−15
voltage the control shall stay safe.
The test apparatus and procedures shall be as described in IEC 61000-4-11. The duration of
the voltage changes and the time for which the reduced voltages are to be maintained are
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given in Table H.101 and illustrated in Figure H.101. The rate of change of voltage shall be
constant; however, the voltage is allowed to be stepped. The steps shall be positioned at zero
crossing and shall be not larger than 10 % of V . Steps under 1 % of V are evaluated as
R R
constant rate of change of voltage.
The control, in the running position, is supplied at rated voltage, or at the lowest rated
voltage of a rated voltage range. After approximately 1 min, the power supply voltage is
reduced to a level such that the control ceases to respond to safety related inputs and/or
drive safety related outputs (e.g. flame signal, fuel valve).
This value of the supply voltage is recorded.
Table H.101 – Timing of short-term supply voltage variations
Voltage test level Time for decreasing Time at reduced voltage Time for increasing
voltage voltage
Recorded value – 10 %
60 s ± 20 % 10 s ± 20 % 60 s ± 20 %
0 V 60 s ± 20 % 10 s ± 20 % 60 s ± 20 %
In the voltage range of operation, from rated voltage to 1,05 times of the recorded value, the
control shall conform to 11.3.105 a). In the voltage range of operation, between 85 % of the
rated voltage and 1,05 times of the recorded value, the control shall conform to 11.3.105 b).
For test purposes, precautions shall be taken to ensure that signals, e.g. from sensors or
switches that can initiate a safety action and the presence of which normally may be
independent of the supply voltage, are present at any level of the supply voltage. The signal
may be simulated to prevent the control de-energizing the safety relevant output(s) as a
result of disappearance of such input signals.
Rated voltage Rated voltage –15 %
Recorded Recorded value –10 %
value
IEC
Figure H.101 – Voltage variation test
Each of the above tests is repeated three times in each of the following operating modes:
a) during pre-purge or waiting time;
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SIST EN 60730-2-5:2015/A1:2019
IEC 60730-2-5:2013/AMD1:2017 – 13 –
© IEC 2017
b) during start-up lock-out time(s);
c) in the running position;
d) in the lock-out position.
Between the voltage dips, short interruptions and voltage variations, a waiting time of at
least 10 s shall be observed.
After the tests, the system:
1) shall continue to function in accordance with the requirements of this standard. It shall
neither proceed to safety shut-down or lock-out, nor shall it reset from lock-out, or
2) shall either perform as in 1) or it may proceed to safety shut-down followed by a system
restart or, if in volatile lock-out, it may proceed to a system restart.
NOTE Non-volatile lock-out excludes the use of system restart.
Delete Subclauses H.26.5.3, H.26.5.4.1, H.26.5.4.2, H.26.5.4.3 and H.26.8.2.
H.26.8.3 Test procedure
Replace the existing text by the following:
...
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