Firedetectionandfire alarmsystems-
Part24:Componentsofvoicealarmsystems-Loudspeakers
Nationalforeword
This British Standard is the UK implementation of EN 54-24:2008.
The UK participation inits preparation was entrusted byTechnicalCommittee FSH/12Fire detection and alarm systems.to SubmitteeFSH/12/5Alarmdevices voice alarm evacuation sub-systems and emergency voicemunications.
A list of organizations represented on this mittee can be obtained onrequest to its secretary.
contract. Users are responsible for its correct application. This publication does not purport to include all the necessary provisions of a
Compliance with a British Standard cannot confer immunity fromlegal obligations.
Amendments/corrigenda issued since publication
This British Standard was published under the authorityof the Standards Policy and Strategy Committeeon 31 July 2008
Date Comments
C BSI 2008
EN54-24
ICS 13.310
English Version
Firedetection andfirealarmsystems-Part24:Componentsofvoicealarmsystems-Loudspeakers
Systemes de detection et dalarme incendie-Composants des systemes dalarme vocale-Partie 24:Hauf-parleurs
Brandmeldeanlagen - Teil 24: Komponenten fir Sprachalarmierungssysteme - Lautsprecher
This Eurpen Standard wasapproved by CEN on 23Febuary 2008.
CENmembers are bound to ply withthe CEN/CENELECIntemalRegulationswhichstipulate the conditions for giving thisEuropeanStandardthstfnationlstndadwithoutyeratonUpodatlistsndbiliographicalrfencesingsuchtol
ThisErnStadardxisteefilernsEnishrnhGemnsinnathangugemdebyraloflicial versions. undertheresponsiblityof aCENmemberinto its own language andnotilied to the ENManagement Centrehasthe same statusasthe
Romania Slovakia Slovenia Spain Sweden Switzertand and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FOR NORMUNG
Contents
Foreword. .4Introduction.... .61 Scope. .72 Normative references. .7 .83 3.1 Terms definitions and abbreviations. Terms and definitions.. .3.2 Abbreviations.. Requirements. .11 .114.1 Compliance... ...11 114.2 4.3 Frequency response limits Durability.... 124.4 4.4.1 Constructio.n... Provisionfor external conductors. ...12 124.4.2 4.4.3 Materials Enclosure protection...... ..12 .124.4.4 4.5 Access. Marking and data. .12 124.5.1 Information in the product data sheet..... Marking. ..12 .134.5.2 5 Tests... .145.1 5.1.1 General... Atmospheric conditionsfortests ..14. .145.1.2 Operating conditionsfortests ..14 .145.1.4 5.1.3 Tolerances... Mounting arrangements... .145.1.5 5.1.6 Frequency response measurement and sensitivity calculation. Frequencyresponse measurement and sensitivity calculationfor loudspeakersrequiring ..145.1.7 dedicatedsystem equalization... Provision for tests ... .165.1.8 5.2 Test schedule. Reproducibility.. 16 185.2.1 Test procedure... Object of the test. ..18 .185.2.2 5.2.3 Testrequirements... .185.3 5.3.1 Object of the test.. Rated impedance ..18 .185.3.2 5.3.3 Test procedure. Testrequirements. ..195.4 5.4.1 Horizontal and vertical coverage angles. Object of the tes.. ..9 195.4.2 5.4.3 Test requirement.. Test procedure. ..19 .205.5 Maximum sound pressurelevel. 205.5.1 5.5.2 Object of the test. Test procedure. 20 -205.5.3 5.6 Rated noise power(durability) Testrequirements. 20 .215.6.1 5.6.2 Test procedure. Object of the test.. 21 .21
5.6.3 5.7 Testrequirement. Dry heat (operational) .21 .215.7.2 5.7.1 Test procedur... Object of the test.. .225.7.3 5.8 Dry heat(endurance). Testrequirements 225.8.1 Test procedure.. Object of the test .22 .225.8.3 5.8.2 Test requirements .23 .235.9.1 5.9 Cold(operational). Object of the test. .23 .235.9.2 5.9.3 Test procedure. Testrequirements .24 .245.10 5.10.1 Damp heat cyclic(operational) Object of the test. .255.10.2 5.10.3 Test procedure.. 25 255.11 Damp heat steady state(endurance) Test requirements 26 255.11.1 5.11.2 Object of the test... Test procedure.. .265.11.3 5.12 Damp heat cyclic(endurance) Testrequirements .26 275.12.1 5.12.2 Object of the test. Test procedure... .275.12.3 5.13 Testrequrements Sulfur dioxide(SO )corrosion(endurance) 275.13.1 Object of the test.5.13.2 5.13.3 Test procedur.. Testrequirements .28 .285.14.1 5.14 Shock(operational). Object of the test. .295.14.2 5.14.3 Testrequirements Test procedur.. .295.15 Impact (operational). .305.15.1 5.15.2 Object of the test.. Test procedure... .305.15.3 5.16 Testrequrements Vibration sinusoidal(operational) .30 .315.16.1 5.16.2 Test procedure.. Object of the test.. ..31 .315.16.3 5.17 Testrequirements Vibration sinusoidal(endurance) .325.17.1 5.17.2 Test procedure. Object of the test. .325.17.3 Testrequirements Enclosure protection.. .335.18 5.18.1 Object of the tests. ..33 335.18.2 5.18.3 Enclosure of the loudspeaker. Test procedures.. 33 335.18.4 Test requirements ..34Annex B(normative) Measuring rated noise power(durability) Annex A(normative)Acoustical measurements. ...35Annex C(informative) Loudspeaker references... 48 .41AnnexZA(infomative)Clauses of this European Standard addressing the provisions of the EUConstructionProducts Directive(89/106/EEC) 50
