IEC TS 63576:2025
(Main)Evaluation methods for protection against risk of fire in electric tumble dryers
Evaluation methods for protection against risk of fire in electric tumble dryers
IEC TS 63576:2025 provides guidance on test methods to mitigate the risks of fire that are particular to electric tumble dryers.
General Information
Standards Content (Sample)
IEC TS 63576 ®
Edition 1.0 2025-04
TECHNICAL
SPECIFICATION
Evaluation methods for protection against risk of fire in electric tumble dryers
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IEC TS 63576 ®
Edition 1.0 2025-04
TECHNICAL
SPECIFICATION
Evaluation methods for protection against risk of fire in electric tumble dryers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.060 ISBN 978-2-8327-0357-1
– 2 – IEC TS 63576:2025 © IEC 2025
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviated terms . 6
3.1 Terms and definitions . 6
4 Test method . 7
Annex A (normative) Nominal and standard exhaust duct for vented-type tumble dryer
testing . 9
A.1 Nominal exhaust duct for tumble dryer testing . 9
A.2 Standard exhaust duct for vented-type tumble dryer testing . 9
Annex B (informative) Capability and features of the test room . 12
Bibliography . 13
Figure A.1 – Pressure/volumetric air flow curve . 9
Figure A.2 – Standard exhaust duct . 10
Figure A.3 – Standard exhaust simulator . 11
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
EVALUATION METHODS FOR PROTECTION AGAINST RISK OF FIRE IN
ELECTRIC TUMBLE DRYERS
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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IEC TS 63576 has been prepared by IEC Technical Committee 61: Safety of household and
similar electrical appliances. It is a Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
61/7385/DTS 61/7426/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification is English.
– 4 – IEC TS 63576:2025 © IEC 2025
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
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The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the
adjective and the associated noun are also in bold.
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• reconfirmed,
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• revised.
INTRODUCTION
Electric tumble dryers are prone to the accumulation of lint within the electrical enclosure of the
appliance. Since a tumble dryer is normally not airtight, fabric fibres can pass through small air
gaps during operation. These fibres that escape the air flow path end up as accumulated lint in
the bottom sections of the enclosure. Although tumble dryers are generally designed to
minimize this, it is difficult to eliminate it completely.
The accumulated lint within the enclosure provides an additional fuel source that can increase
the severity of hazards caused by electric component faults as well as abnormal overheating
conditions. TC 61 has expressed the need to develop this Technical Specification to provide
additional evaluation methods to determine the safety of electric tumble dryers with respect to
the accumulation of lint within the enclosure.
– 6 – IEC TS 63576:2025 © IEC 2025
EVALUATION METHODS FOR PROTECTION AGAINST RISK OF FIRE IN
ELECTRIC TUMBLE DRYERS
1 Scope
This document provides guidance on test methods to mitigate the risks of fire that are particular
to electric tumble dryers.
2 Normative references
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.
IEC 60335-1:2020, Household and similar electrical appliances – Safety – Part 1: General
requirements
IEC 60335-2-11:2024, Household and similar electrical appliances – Safety – Part 2-11:
Particular requirements for tumble dryers
ISO 817, Refrigerants – Designation and safety classification
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1 Terms and definitions
3.1.1
tumble dryer
appliance in which textile material is dried by tumbling in a rotating drum through which heated
air is blown
3.1.2
heat pump type tumble dryer
tumble dryer that uses a refrigerating system incorporating sealed motor-compressors for
carrying out the drying process
Note 1 to entry: A heat pump type tumble dryer can contain resistive heating element(s).
3.1.3
flammable refrigerant
refrigerant with a flammability classification A2L, A2 or A3 in accordance with ISO 817
Note 1 to entry: For refrigerant blends that have more than one flammability classification, the most unfavourable
classification is taken for the purposes of this definition.
3.1.4
vented-type tumble dryer
tumble dryer in which the air that is used for the drying process is exhausted from the appliance
via an air duct
3.1.5
cheesecloth
bleached cotton cloth running approximately 34 g/m with a thread count in the range of
10 threads/cm to 13 threads/cm by 9 threads/cm to 12 threads/cm
4 Test method
There shall be no risk of fire spreading out of the appliance due to fluff or lint accumulation.
This requirement does not apply to the drying function of washing machines having a drying
cycle.
Compliance is checked by the following test.
All permanent labels that are applied by the manufacturer shall be applied to the intended
surfaces of the tumble dryer. Printing on the labels is not required for this test.
NOTE 1 The permanent labels are the labels that are not intended to be removed before the first use of the
appliance.
For heat pump type tumble dryers for which flammable refrigerant is contained, the
flammable refrigerant shall be removed before conducting the test. The heat pump shall be
filled with helium or nitrogen at the rated operating pressure.
NOTE 2 The alternate gas is used to reduce the risk of fire or explosion during the test. The pressurization of the
system is to avoid re-sealing of any damaged refrigeration system com
...
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