EN 352-6:2002

SLOVENSKI STANDARD
01-april-2003
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Hearing protectors - Safety requirements and testing - Part 6: Ear-muffs with electrical
audio input
Gehörschützer - Sicherheitstechnische Anforderungen und Prüfungen - Teil 6:
Kapselgehörschützer mit Kommunikationseinrichtungen
Protecteurs individuels contre le bruit - Exigences de sécurité et essais - Partie 6: Serre-
tete avec entrée audio-électrique
Ta slovenski standard je istoveten z: EN 352-6:2002
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 352-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2002
ICS 13.340.20
English version
Hearing protectors - Safety requirements and testing - Part 6:
Ear-muffs with electrical audio input
Protecteurs individuels contre le bruit - Exigences de Gehörschützer - Sicherheitstechnische Anforderungen und
sécurité et essais - Partie 6: Serre-tête avec entrée audio- Prüfungen - Teil 6: Kapselgehörschützer mit
électrique Kommunikationseinrichtungen
This European Standard was approved by CEN on 16 October 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 352-6:2002 E
worldwide for CEN national Members.

Contents
page
Foreword.3
Introduction.4
1 Scope.4
2 Normative references.4
3 Terms and definitions .5
4 Requirements.5
5 Testing.5
6 Information supplied by the manufacturer .6
7 Marking.7
Annex A  Uncertainty of measurement and interpretation of test results.8
(informative)
Annex B (informative) Determination of sound output levels for ear-muffs fitted with
electrical audio input.10
Annex ZA (informative) Clauses of this European standard addressing essential
requirements or other provisions of EU Directive .11
Bibliography.12
Foreword
This document (EN 352-6:2002) has been prepared by Technical Committee CEN/TC 159, "Hearing
protectors", the secretariat of which is held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2003, and conflicting national standards shall be withdrawn at
the latest by June 2003.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directives, see informative Annex ZA, which is an integral part of this standard.
In this standard the annexes A and B are informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
This standard for ”Hearing Protectors – safety requirements and testing – Part 6: Ear-muffs with electrical
audio input”, specifies procedures for the testing of personal hearing protection devices in relation to Directive
89/686/EEC - Personal Protective Equipment.
EN 352-1 deals with requirements for ear-muffs, EN 352-2 with ear-plugs, EN 352-3 with ear-muffs attached
to industrial safety helmets. EN 13819-1 and EN 13819-2 deal with testing plans common to all types of
hearing protectors covered by this series of ENs.
Additional safety requirements and the associated test procedures for level-dependent ear-muffs are
contained in EN 352-4, for ear-muffs with active noise reduction in EN 352-5 and for level-dependent ear-
plugs in EN 352-7. An associated standard EN 458, covers selection, use, care and maintenance of hearing
protection.
The particular requirement for hearing protectors in relation to their ability to reduce noise to below daily limit
levels set by Directive 86/188/EEC - "on the protection of workers from the risks related to exposure to noise at
work" is addressed in the standard by means of a requirement to report the output sound levels of the electrical
audio circuit.
An additional acoustic performance test method to that described in EN 24869-1 and applied in EN 352-1,
EN 352-2 and EN 352-3 is required for ear-muffs with electrical audio input. Until such time as this work is
completed, the test method described in Annex B of this standard is recommended for ear-muffs with electrical
audio input, in addition to the EN 24869-1 test required within EN 352-1.
Ear-muffs with electrical audio input are designed to provide speech information and warning signals, while
providing attenuation of sounds in excess of limit levels. They may be selected for use in a number of different
working environments, in air traffic communication, in the police forces, in the broadcasting and entertainment
industries, in intermittent or impulsive noise environments when speech information needs to be received and
where other warning signals are required to be heard.
This part of the standard is a specification intended for type approval purposes, for which four sets of specimen
ear-muffs are tested, (further samples may be required for testing under EN 351, or EN 352-3, as appropriate).
The requirements and tests of the standard are concerned primarily with the electrical audio input performance of
the ear-muffs. The standard may be applied to ear-muffs for fitting to industrial safety helmets.
1 Scope
This European Standard is concerned with ear-muffs whose passive acoustic performance may be supplemented
by an electrical audio input facility or circuit for essential safety-related purposes. It specifies additional
constructional, design and performance requirements, methods of test, marking requirements and user
information relating to the incorporation of the electrical audio input facility.
The requirements of this standard are intended to take account of the ergonomic interaction between the
wearer, the device and, where possible, the working environment in which the device is likely to be used (see
Annex ZA of this standard and EN 458)
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to
this European Standard only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies (including amendments).
EN 352-1:2002, Hearing protectors - General requirements - Part 1: Ear-muffs
EN 352-3:2002, Hearing protectors – General requirements – Part 3: Ear-muffs attached to an industrial
safety helmet
EN 13819-1, Hearing protectors - Testing - Part 1: Physical test methods
3 Terms and definitions
For the purposes of this European Standard the terms and definitions given in EN 352-1:2002 (or EN 352-
3:2002, as appropriate) and the following definition apply:
3.1
sound output level
A-weighted diffuse-field related sound pressure level produced by the electrical audio input facility of an ear-muff
for a given input level.
4 Requirements
4.1 General
Ear-muffs with electrical audio input shall meet the requirements of EN 352-1 (or EN 352-3, as appropriate).
Additional requirements
...