IEC 60601-2-66:2012

IEC 60601-2-66 ®
Edition 1.0 2012-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Medical electrical equipment –
Part 2-66: Particular requirements for the basic safety and essential performance
of hearing instruments and hearing instrument systems

Appareils électromédicaux –
Partie 2-66: Exigences particulières pour la sécurité de base et les performances
essentielles des instruments d'audition et systèmes d'audition

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IEC 60601-2-66 ®
Edition 1.0 2012-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Medical electrical equipment –

Part 2-66: Particular requirements for the basic safety and essential performance

of hearing instruments and hearing instrument systems

Appareils électromédicaux –
Partie 2-66: Exigences particulières pour la sécurité de base et les performances

essentielles des instruments d'audition et systèmes d'audition

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 11.180.15; 17.140.50 ISBN 978-2-83220-381-1

– 2 – 60601-2-66 © IEC:2012
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
201.1 Scope, object and related standards . 6
201.2 Normative references . 8
201.3 Terms and definitions . 9
201.4 General requirements . 10
201.5 General requirements for testing ME EQUIPMENT . 11
201.6 Classification of ME EQUIPMENT and ME SYSTEMS . 12
201.7 ME EQUIPMENT identification, marking and documents . 13
201.8 *Protection against electrical HAZARDS from ME EQUIPMENT . 18
201.9 *Protection against MECHANICAL HAZARDS of ME EQUIPMENT and ME SYSTEMS . 21
201.10 Protection against unwanted and excessive radiation HAZARDS . 23
201.11 *Protection against excessive temperatures and other HAZARDS . 23
201.12 *Accuracy of controls and instruments and protection against hazardous
outputs . 24
201.13 *HAZARDOUS SITUATIONS and fault conditions . 25
201.14 *PROGRAMMABLE ELECTRICAL MEDICAL SYSTEMS (PEMS) . 28
201.15 *Construction of ME EQUIPMENT . 28
201.16 *ME SYSTEMS . 30
201.17 *Electromagnetic compatibility of ME EQUIPMENT and ME SYSTEMS . 31
Annexes . 32
Annex E (informative) Examples of the connection of the measuring device (MD) for
measurement of the PATIENT LEAKAGE CURRENT and PATIENT AUXILIARY CURRENT . 32
Annex G (normative) Protection against HAZARDS of ignition of flammable anaesthetic
mixtures . 32
Annex H (informative) PEMS structure, PEMS DEVELOPMENT LIFE-CYCLE and
documentation . 32
Annex I (informative) ME SYSTEMS aspects . 32
Annex J (informative) Survey of insulation paths . 33
Annex K (informative) Simplified PATIENT LEAKAGE CURRENT diagrams . 33
Annex L (normative) Insulated winding wires for use without interleaved insulation . 33
Annex AA (informative) Particular guidance and rationale . 34
Annex BB (informative) Abbreviations . 39
Bibliography . 40
Index of defined terms used in this particular standard . 41

Figure 201.101 – Measuring circuit for the LEAKAGE CURRENT . 20

Table 201.102 – MECHANICAL HAZARDS to be considered . 21
Table AA.101 – Summary of the approach of this standard . 35

60601-2-66 © IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MEDICAL ELECTRICAL EQUIPMENT –

Part 2-66: Particular requirements for the basic safety and essential
performance of hearing instruments and hearing instrument systems

FOREWORD
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International Standard IEC 60601-2-66 has been prepared by IEC technical committee 29:
Electroacoustics.
The text of this particular standard is based on the following documents:
FDIS Report on voting
29/777/FDIS 29/792/RVD
Full information on the voting for the approval of this particular standard can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
In this standard, the following print types are used:

– 4 – 60601-2-66 © IEC:2012
– Requirements and definitions: roman type.
– Test specifications: italic type.
– Informative material appearing outside of tables, such as notes, examples and references: in smaller type.
Normative text of tables is also in a smaller type.
– TERMS DEFINED IN CLAUSE 3 OF THE GENERAL STANDARD, IN THIS PARTICULAR STANDARD OR AS
NOTED: SMALL CAPITALS.
In referring to the structure of this standard, the term
– “clause” means one of the seventeen numbered divisions wit
...