IEC 60665:2018

IEC 60665 ®
Edition 2.0 2018-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A.C. ventilating fans and regulators for household and similar purposes –
Methods for measuring performance

Aérateurs à courant alternatif et régulateurs pour applications domestiques et
analogues – Méthodes de mesure de l'aptitude à la fonction

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IEC 60665 ®
Edition 2.0 2018-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A.C. ventilating fans and regulators for household and similar purposes –

Methods for measuring performance

Aérateurs à courant alternatif et régulateurs pour applications domestiques et

analogues – Méthodes de mesure de l'aptitude à la fonction

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 23.120 ISBN 978-2-8322-6320-4

– 2 – IEC 60665:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Bearings . 7
5 Speed regulators . 7
6 Marking . 7
7 Tests . 7
7.1 General . 7
7.2 Test voltage . 8
7.3 Test frequency . 8
7.4 Limits of voltage variation . 8
7.5 Tests for air delivery performance . 8
8 Tolerances on fan ratings . 8
8.1 Partition type ventilating fans (Type A) . 8
8.2 Free inlet partition ventilating fans (Type B), free outlet partition ventilating
fans (Type C) and fully ducted ventilating fans (Type D) . 8
Annex A (normative) Air delivery performance evaluation . 9
Bibliography . 16

Figure A.1 – Plot of partial pressure of water vapour in the air against laboratory
ambient temperature for different values of relative humidity (RH) . 10
Figure A.2 – Type A test installation (outlet-side multiple nozzle test chamber) . 12
Figure A.3 – Type B test installation (without antiswirl device) using multiple nozzle test
chamber . 13
Figure A.4 – Type C test installation (inlet-side test chamber) . 14
Figure A.5 – Type D using Type B (outlet-side test duct) without antiswirl device,
without common segment and with inlet-duct simulation . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
A.C. VENTILATING FANS AND REGULATORS FOR HOUSEHOLD AND
SIMILAR PURPOSES – METHODS FOR MEASURING PERFORMANCE

FOREWORD
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International Standard IEC 60665 has been prepared by subcommittee 59L: Small household
appliances, of IEC technical committee 59: Performance of household and similar electrical
appliances
This second edition cancels and replaces the first edition published in 1980. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the test chambers have been updated;
b) a test chamber for a type D fan is introduced.
The text of this International Standard is based on the following documents:
CDV Report on voting
59L/139/CDV 59L/156A/RVC
– 4 – IEC 60665:2018 © IEC 2018

Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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