IEC 60335-2-34:2002/AMD2:2008

IEC 60335-2-34
Edition 4.0 2008-10
INTERNATIONAL
STANDARD
AMENDMENT 2
Household and similar electrical appliances – Safety –
Part 2-34: Particular requirements for motor-compressors

IEC 60335-2-34:2002/A2:2008(E)

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IEC 60335-2-34
Edition 4.0 2008-10
INTERNATIONAL
STANDARD
AMENDMENT 2
Household and similar electrical appliances – Safety –
Part 2-34: Particular requirements for motor-compressors

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
H
ICS 97.040.30 ISBN 978-2-88910-152-8
– 2 – 60335-2-34 Amend. 2 © IEC:2008(E)
FOREWORD
This amendment has been prepared by subcommittee 61C: Household appliances for
refrigeration, of IEC technical committee 61: Safety of household and similar electrical
appliances.
The text of this amendment is based on the following documents:
FDIS Report on voting
61C/431/FDIS 61C/435/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 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• withdrawn,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.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.
_____________
INTRODUCTION
Replace the second sentence of the second paragraph by the following:
It also covers abnormal situations that can be expected in practice and takes into account the
way in which electromagnetic phenomena can affect the safe operation of appliances.
Replace the fifth paragraph by the following:
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.

60335-2-34 Amend. 2 © IEC:2008(E) – 3 –
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
1 Scope
Replace Note 105 with the following:
NOTE 105 If motor-compressors for refrigerant R744 used in appliances with a transcritical refrigeration
system are equipped with pressure relief devices, compliance with the requirements for these devices is checked
during the tests on the final appliance.
3 Definitions
3.104 Replace “electronic protection system” by “protective electronic circuit”.
3.105 Delete the first two dashed items.
Add the following new definitions:
3.108
transcritical refrigeration system
refrigeration system where the pressure in the high pressure side is above the pressure
where the vapour and liquid states of the refrigerant can coexist in thermodynamic equilibrium
3.109
design pressure (DP)
gauge pressure that has been assigned to a transcritical refrigeration system
It is specified for the high pressure side of a refrigeration system.
3 110
pressure relief device
pressure sensing device, intended to reduce pressure automatically when pressures within
the refrigeration system exceed the preset pressure of the device
NOTE This device has no provisions for setting by the end user.
5 General conditions for the tests
5.2 At the end of the first paragraph of the addition, add “or are needed”.
5.10 In the addition, add the following dashed item:
• for motor-compressors intended for appliances with a transcritical refrigeration
system, the test pressure for the high pressure side if higher than the minimum test
pressure.
6 Classification
6.101 Add the following:
Motor-compressors using refrigerant R744 shall not be classified as being tested with
Annex AA.
– 4 – 60335-2-34 Amend. 2 © IEC:2008(E)
Add the following new subclause:
6.103 Motor-compressors are classified as being protected by protective electronic
circuits or not being protected by protective electronic circuits.
NOTE This does not preclude the protective electronic circuits being provided in the end product.
Compliance is checked by inspection and by the relevant tests.
19 Abnormal operation
19.11.2 Replace the text of the modification by the following:
If the tests of this subclause have to be carried out, they shall be carried out in the end
product application.
NOTE 101 The application of these tests in this part 2 is not mandatory.
Add the following two subclauses:
19.11.3 Replacement:
If the motor-compressor is classified
...