IEC 60730-2-5:2000/AMD2:2008

IEC 60730-2-5
Edition 3.0 2008-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Automatic electrical controls for household and similar use –
Part 2-5: Particular requirements for automatic electrical burner control systems

Dispositifs de commande électrique automatiques à usage domestique et
analogue –
Partie 2-5: Règles particulières pour les systèmes de commande électrique
automatiques des brûleurs

IEC 60730-2-5:2000/A2:2008

---------------------- Page: 1 ----------------------
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IEC 60730-2-5
Edition 3.0 2008-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Automatic electrical controls for household and similar use –
Part 2-5: Particular requirements for automatic electrical burner control systems

Dispositifs de commande électrique automatiques à usage domestique et
analogue –
Partie 2-5: Règles particulières pour les systèmes de commande électrique
automatiques des brûleurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 97.120 ISBN 978-2-88910-266-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 60730-2-5 Amend. 2 © IEC:2008
FOREWORD
This amendment has been prepared by IEC technical committee 72: Automatic controls for
household use.
The text of this amendment is based on the following documents:
FDIS Report on Voting
72/770/FDIS 72/773/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.
This amendment is based on 60730-2-5, Edition 3 (2000) and its Amendment 1 (2004).
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the maintenance result date indicated on the IEC web site 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• withdrawn,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.

_____________

Page 5
FOREWORD
Replace, on page 7, the third paragraph after the report on voting table by the following new
paragraph:
This Part 2-5 is intended to be used in conjunction with IEC 60730-1. It was established on
the basis of the third edition (1999) and Amendment 1 (2003) and Amendment 2 (2007) of that
publication. Consideration may be given to future editions of, or amendments to, IEC 60730-1.

Page 7
Replace the “in some countries” note by the following new note:
The “in some countries” notes regarding differing national practices are contained in the following subclauses:
– 2.3.127
– 6.11
– 15.7
– 17.16.102.1
– H.26.10
– H.26.11.103
– Table H.27.1, Note 7

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60730-2-5 Amend. 2 © IEC:2008 – 3 –
– H.27.1.3

Page 11
1.5 Normative references
Delete the following reference:
IEC 60384-16:1982, Fixed capacitors for use in electronic equipment – Part 16: Sectional
specification: Fixed metallized polypropylene film dielectric d.c. capacitors
Add the following new references:
IEC 60127-1:2006, Miniature fuses – Part 1: Definitions for miniature fuses and general
requirements for miniature fuse-links
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-5-1:2003, Low-voltage switchgear and controlgear – Part 5-1: Control circuit
devices and switching elements – Electromechanical control circuit devices

Page 13
2 Definitions
Replace, on page 17, definitions 2.3.112, 2.2.112.1 and 2.3.112.2 by the following:
2.3.112
lock-out
process in which the system goes into one of the following lock-out conditions, following
safety shutdown
2.3.112.1
non-volatile lock-out
condition such that a restart can only be accomplished by a manual reset of the system and
by no other cause
2.3.112.2
volatile lock-out
condition such that a restart can be accomplished by either a manual reset of the system or
by an interruption of the power supply and its subsequent restoration

Page 25
4.1.1 Revise the font of the text to italics.

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– 4 – 60730-2-5 Amend. 2 © IEC:2008
Page 29
6.7 According to ambient temperature limits of the system and system components
Delete the modification to replace the title of the subclause.

Page 31
7.2.9 Replace “Replacement:” with “Modification:”.

Page 33
Table 7.2
In the table, delete Items 52 and 57.
Replace items 119 and 126 as follows:
Information Clause or subclause Method
119 See Annex H
102)
11.3.107, 13.2.101 D
126 Electronic high-voltage ignition spark gap

Add the following new rows:

135 Type of lock-out 2.3.112, 11.3.108, H.27.1.3.101 D
136 See Annex H

Page 37
8.1.101 High-voltage ignition sources
Replace item a) with the following item:
a) for continuous spark ignition (pulses within the mains frequency range):
– the maximum voltage is higher than 10 kV (peak), and/or
– the maximum current is higher than 0,7 mA (peak);
Figure 101
Replace the existing figure title with the following new title:
Figure 101 – Pulse spark generation

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60730-2-5 Amend. 2 © IEC:2008 – 5 –
Page 39
11 Constructional requirements
Add the following new subclause:
11.3.5 Contacts – General
Additional subclauses:
11.3.5.101 The system shall include at least two switching elements to directly de-energize
the safety relevant valve terminals.
NOTE A single relay operating two independent contacts is considered to be only one switching element.
11.3.5.101.1 Measures to prevent common mode errors
Requirements and test methods are under consideration.

Page 41
11.3.105
Replace the last paragraph with the following new paragraph:
Compliance is checked by H.26.5.4.
Delete subclauses 11.3.105.1 to 11.3.105.6 inclusive including the ”in some countries” note.

Page 47
Add, after 11.4.15, the following text:
Additional subclauses:

Page 49
Add the following new subclause after 11.11.6:
11.13 Not applicable.

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– 6 – 60730-2-5 Amend. 2 © IEC:2008
Page 55
15 Manufacturing deviation and drift
Replace “Replacement:” with “This clause of Part 1 is replaced as follows:”.

Page 67
25 Normal operation
Replace “See annex H.” with “This clause of Part 1 is applicable.”
27 Abnormal operation
Delete “See annex H.”
28 Guidance on the use of electronic disconnection
Replace “See annex H.” with “This clause of Part 1 is applicable.”

Page 69
Annex H – Requirements for electronics
Replace the existing title with the following new title:
Annex H – Requirements for electronic controls
H.2.5 Definitions of type of control according to the construction
Delete the addition of definition H.2.5.101.

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60730-2-5 Amend. 2 © IEC:2008 – 7 –
H.7 Information
Table 7.2
Add, to the existing modification, the following new instructions:
Information Clause or Method
subclause
Modify the existing requirement:
71 Not applicable
Add the following additional requirement:
119 Defined state ”out of operation” H.26.8.2 X
Add the following additional requirement: H.27.1.3.102 X
12), 104), 105)
136 Software fault/error detection time(s) for controls of software class C H.27.1.3.103
106)

NOTES:
Additional notes:
104)
The fault/error detection time is the period between the execution (after the
fault has occurred), of the relevant software segment, either for function or for
checking purposes and the completion of the declared control response.
105)
For systems designed for non-permanent operations, the fault/error detection
time for the:
• first fault shall be according to H.27.1.3.102.1 and H.27.1.3.104.1
• second fault shall be according to H.27.1.3.102.2 and H.27.1.3.104.2
106)
For systems designed for permanent operations, the fault/error detection time
for the:
• first fault shall be according to H.27.1.3.103.1 and H.27.1.3.104.1
• second fault shall be according to H.27.1.3.103.2 and H.27.1.3.104.2

Page 71
Add, after H.11.12.12, the following new subclause:
Additional subclause:
H.11.12.101 If time slot monitoring is used, it shall be sensitive to both an upper and a lower
limit of the time interval. Faults resulting in the shift of the upper and/or lower limit shall be
taken into account.

Add, after Clause H.26, the following new subclause:
H.26.1 Modification:
The third paragraph is not applicable.

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– 8 – 60730-2-5 Amend. 2 © IEC:2008
Page 73
H.26.5 Test of the influence of voltage dips and short voltage interruptions in the
power supply network
Replace the existing title with the following new title:
H.26.5 Voltage dips and voltage interruptions in the power supply network

H.26.5.2
Delete the existing subclause (introduced by Amendment 1) and replace with following new
subclause:
H.26.5.2 Test values
Replacement:
The system shall tolerate voltage dips, short interruptions and voltage variations in the
electricity supply so that, when tested in accordance with H.26.5.3,
a) for the values of Table H.101 criteria a): it shall continue to function in accordance with
the requirements of this standard. It shall neither proceed to safety shutdown or lock-out,
nor shall it reset from lock-out;
b) for the values of Table H.101 criteria b): either it shall perform as in a) or it may proceed
to safety shutdown 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.
When the power supply is restored, the system restart shall comply with the requirements for
a start-up sequence.
Requirement b) 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.
Table H.101 – Voltage dips, short interruptions and voltage variations
ΔU
Assessment
Duration
criteria
30 % 60 % 100 %
a) Half-cycle of supply waveform  X
One cycle of supply waveform X
b) 2,5 cycles X X X
25 cycles 50 cycles X X X
X X X

The test shall be performed in accordance with H.26.5.3.

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60730-2-5 Amend. 2 © IEC:2008 – 9 –
H.26.5.4 Severity levels
Replace the existing title and text with the following new title and text:
H.26.5.4 Voltage variation test
Replacement:
The control shall tolerate short-term supply voltage variations.
Compliance is checked by the test of H.26.5.4.
Add the following new subclauses:
H.26.5.4.1 Purpose of the test
Replacement:
The purpose of the test is to verify the immunity of the control against voltage change taking
place over a short period which may occur due to a change of load or stored energy in local
power networks. The control shall operate according to the functional specification (see
11.3.105) at least within the voltage tolerance band of the rated voltage
+10
%, and below –15 % of the rated voltage the control shall stay safe.
−15
H.26.5.4.2 The duration and procedure
Replacement:
The duration of the voltage changes and the time for which the reduced voltages are to be
maintained are given in Table H.26.5.4.2 and illustrated in Figure H.26.5.4.2. The rate of
change of voltage shall be constant; however, the voltage is allowed to be stepped. The steps
shall be positioned at 0 crossing and shall be not larger than 10 % of V . Steps under 1 % of
R
V are evaluated as constant rate of change of voltage.
R
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.26.5.4.2 – 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).

---------------------- Page: 11 ----------------------
– 10 – 60730-2-5 Amend. 2 © IEC:2008
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.

IEC  2007/08

Figure H.26.5.4.2 – Voltage variation test
H.26.5.4.3
Addition:
Each of the above tests is repeated three times in each of the operating conditions indicated
in H.26.5.3.
After the tests, the system:
a) shall continue to function in accordance with the requirements of this standard. It shall
neither proceed to safety shutdown or lock-out, nor shall it reset from lock-out, or
b) shall either perform as in a) or it may proceed to safety shutdown 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.

Page 77
H.26.5.5
Delete the existing subclause.
H.26.5.6 Ramp voltage tests
Delete the existing subclause with its title.

---------------------- Page: 12 ----------------------
60730-2-5 Amend. 2 © IEC:2008 – 11 –
H.26.8 Surge immunity test
Add the following subclause:
H.26.8.2 Test values
Addition:
The system shall tolerate voltage surges on the mains supply and relevant signal terminals,
so that, when tested in accordance with H.26.8.3,
a) for the values of Table H.26.8.2 installation class 2, it shall continue to function in
accordance with the requirements of this standard. It shall neither proceed to safety
shutdown or lock-out nor shall it reset from lock-out;
b) for the values of Table H.26.8.2 installation class 3 for all listed tests, either it shall
perform as in a) or it may proceed to safety shutdown, which may be 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.
c) for the values of Table H.26.8.2 installation class 4 with line to earth on power supply only,
either it shall perform as in a) or b) or it shall go into the defined state “out of operation” as
declared by the manufacturer in accordance with Table 7.2 Item 119.
For compliance criteria a) and b), after the tests of this clause, the surge protective
components shall not be destroyed.
Add the following subclause:
H.26.8.3 Test procedure
Replacement of the second paragraph:
The test shall be carried out by subjecting the system to five pulses and with the voltage and
current values listed in Table H.26.8.2 at intervals of not less than 60 s.
The five pulses of each polarity (+, –) and each phase angle as described in IEC 61000-4-5
are delivered in the following order:
a) 2 pulses with the system in the lock-out position;
b) 1 pulse with the system in the running position;
c) 2 pulses randomly applied during the start-up sequence.
The tests on interface cables are not carried out if the manufacturer explicitly specifies that
the length of that cable shall not exceed 10 m.
If “VDR” are used as surge protective devices, they shall comply with IEC 61643-1.
Additionally, they shall be selected to withstand the impulses corresponding to the installation
class level.
For controls having surge protective device arresters incorporating spark gaps, the test is
repeated at a level that is 95 % of the flashover voltage.
H.26.8.4 Severity levels
Delete the addition of subclause H.26.8.4.101.

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– 12 – 60730-2-5 Amend. 2 © IEC:2008
H.26.8.5 Test procedure
Delete this subclause.
H.26.9 Electrical fast transient/burst immunity test
Replace the existing title by the following new title:
H.26.9 Electrical fast transient/burst test
Replace the existing text (as modified by Amendment 1:2004) as follows:
Replacement of the following subclauses of Part 1:
H.26.9.2 Test levels
Table H.26.9.2 – Test level for electrical fast transient burst
L1, L2, PE I/O
Severity level in
Voltage peak Repetition rate Voltage peak Repetition rate
Operating
accordance with
conditions
kV KHz kV kHz
IEC 61000-4-4
a) 2 1 5 0,5 5
b) 3 2 5 1 5
c) 4 4 5 - -
The table in H.26.9 of IEC 60730-1 (1999) is applicable.
H.26.9.3 Test procedure
The system shall tolerate electrical fast/transient bursts on the mains supply and signal lines,
so that, when tested in accordance with H.26.9.2,
a) for the value of operating conditions a): it shall continue to function in accordance with the
requirements of this standard. It shall neither go to safety shutdown or lock-out, not shall it
reset from lock-out;
b) for the values of operating conditions b): either it shall perform as in a) or it may proceed
to safety shutdown which may be 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.
c) for the values of Table H.26.9.2 severity level 4, either it shall perform as in a) or b) or it
shall be set out of operation into a defined state as declared by the manufacturer in
accordance with Table 7.2 Item 119.
The test shall be performed for 20 cycles with the system having reached the running
position, remaining in the running position for a minimum of 30 s within each cycle. The test
shall also be performed for a minimum of 2 min with the system in the lock-out position and
with the system in the stand-by position.

---------------------- Page: 14 ----------------------
60730-2-5 Amend. 2 © IEC:2008 – 13 –
H.26.11.103 Operating conditions/compliance (introduced by Amendment 1)
Modify the existing item b) into:
b) for the values of operating conditions b): either it shall perform as in a) or it may proceed
to safety shutdown which may be followed by a system restart, or if in volatile lock-out it
may proceed to a system restart.
Add the following note below b):
NOTE Non-volatile lock-out excludes the use of system restart.
H.26.12.2.101 Compliance (introduced by Amendment 1)
Modify the existing item b) into:
b) for the values of operating conditions b): either it shall perform as in a) or it may proceed
to safety shutdown which may be followed by a system restart, or if in volatile lock-out it
may proceed to a system restart.
Add the following note below b):
NOTE Non-volatile lock-out excludes the use of system restart.
H.26.12.3 Immunity to radiated electromagnetic fields (introduced by Amendment 1)
Replace the existing title by the following new title:
H.26.12.3 Radiated electromagnetic fields immunity evaluation
H.26.12.3.101 Compliance
Modify the existing item b) into:
b) for the values of operating conditions b): either it shall perform as in a) or it may proceed
to safety shutdown which may be followed by a system restart, or if in volatile lock-out it
may proceed to a system restart.”
Add the following note below b):
NOTE Non-volatile lock-out excludes the use of system restart.

Page 83
H.26.13 Evaluation of compliance
Replace the existing title and text of the subclause as follows:
H.26.13 Test of influence of supply frequency variations
This subclause of Part 1 is applicable except as follows:

---------------------- Page: 15 ----------------------
– 14 – 60730-2-5 Amend. 2 © IEC:2008
H.26.13.2 Test levels
Addition, after Table H.26.13.2:
The system shall tolerate supply frequency variations such that, when tested in accordance
with H.26.13.3,
a) for the values of Table H.26.13.2, test level 2: it shall continue to function in accordance
with the requirements of this standard. It shall neither go to safety shutdown or lock-out,
nor shall it reset from lock-out. Variation in programme timings shall not exceed the
percentage of applied frequency variations;
b) for the values of Table H.26.13.2, test level 3: either it shall perform as in a) or it may
proceed to safety shutdown which may be 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.
H.26.13.3 Test procedure
Addition:
The test shall be performed at least once with the system in each of the following positions:
– start position;
– running position;
– lock-out position.
Add the following new subclause:
H.26.14 Power frequency magnetic field immunity test
This subclause of Part 1 is applicable except as follows:
H.26.14.2 Test levels
Addition, after Table H.26.14.2:
The system shall tolerate power frequency magnetic fields so that, when tested in accordance
with H.26.14.3,
a) for the values of Table H.26.14.2, severity level 2: it shall continue to function in
accordance with the requirements of this standard. It shall neither go to safety shutdown
or lock-out, nor shall it reset from lock-out.
b) for the values of Table H.26.14.2, severity level 3: either it shall perform as in a) or it may
proceed to safety shutdown which may be 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.
H.26.14.3 Test procedure
Addition:
The test shall be done at least once with the system in each of the following positions:
– start position;
– running position;
– lock-out position.

---------------------- Page: 16 ----------------------
60730-2-5 Amend. 2 © IEC:2008 – 15 –
Add the following new subclause:
H.26.15 Evaluation of compliance
This clause of Part 1 is not applicable.

Page 85
H.27.1.3
Modify the second dash after the first paragraph as follows:
– the applicable subclauses of H.27.1.3.102 to H.27.1.3.105 inclusive; and

Page 87
H.27.1.3.102 Systems for non-permanent operation / systems without self-checking
feature
Replace the existing text of H.27.1.3.102 as follows:
H.27.1.3.102.1 First fault
Any first fault (see Table H.27.1) in any one electronic component or any one fault together
with any other fault arising from the first fault shall result in either:
a) the system proceeding to safety shut-down within the fault/error detection time as
declared by the manufacturer in accordance with Table 7.2, Item 136 (terminals for fuel
flow means are de-energized) and it remains in this condition as long as the fault appears;
or
b) the system proceeding to lock-out within the fault/error detection time as declared by the
manufacturer in accordance with Table 7.2, Item 136 provided that the subsequent reset
from lock-out under the same fault condition results in lock-out; or
c) the system continuing to operate, the fault being identified during the next start-up
sequence, the result being a) or b); or
d) the system remaining operational in accordance with Clause 15.
H.27.1.3.102.2 Second fault
If when appraised according to the test conditions and criteria of H.27.1.3, the first fault
results in the system remaining operational in accordance with Clause 15, any further
independent fault considered together with the first fault shall result in either H.27.1.3.102.1
a), b), c) or d). During assessment, the second fault shall only be evaluated when a start-up
sequence has been performed between the first and second fault.
A third independent fault is not considered.
H.27.1.3.102.3 During the start-up phase and shut-down phase (if applicable), the first and
second fault analysis methodology of H.27.1.3.102.1 and H.27.1.3.102.2 shall be used.

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– 16 – 60730-2-5 Amend. 2 © IEC:2008
H.27.1.3.103 System for permanent operation/system with self-checking feature
Replace the existing text of H.27.1.3.103 as follows:
H.27.1.3.103.1 First fault
Any first fault (see Table H.27.1) in any one electronic component or any one fault together
with any other fault arising from the first fault shall result in either:
a) the system proceeding to safety shut-down within the fault/error detection time as
declared by the manufacturer in accordance with Table 7.2, item 136, (terminals for fuel
flow means are de-energized) and it remains in this condition as long as the fault appears;
or
b) the system
...