BS EN 54-24:2008 pdf free.Fire detection and firealarm systems—Components of voice alarmsystems—Loudspeakers.
BS EN 54-24 This European Standard specifies requirements，test methods and performance criteria for loudspeakersintended to broadcast a warning of fire between a fire detection and fire alarm system and the occupants of abuilding.
This European Standard specifies loudspeakers for two types of application environment type A, generally forindoor use and type B, generally for outdoor use.
This European Standard does not cover loudspeakers for special applications, for example loudspeaker foruse in hazardous applications, if such applications require additional or other requirements or tests than thosegiven in this European Standard.
This European Standard is not intended to cover addressable loudspeakers，loudspeakers with activecomponents.
voice alarm sounders are covered in EN 54-3:2001.
The following referenced documents are indispensable for the application of this document.For datedreferences,only the edition cited applies. For undated references， the latest edition of the referenceddocument (including any amendments) applies.
EN 54-1:1996, Fire detection and fire alarm systems — Part 1: Introduction
EN 54-3:2001, Fire detection and fire alarm systems — Part 3: Fire alarm devices — Sounders
EN 60068-1:1994,Environmental testing — Part 1: General and guidance (IEC 60068-1:1988 + Corrigendum1988+ A1:1992)
EN 60068-2-1:2007, Environmental testing —Part 2-1:Tests —Test A: Cold (IEC 60068-2-1:2007).
EN 60068-2-2:1993,Basic environmental testing procedures — Part 2-2: Tests — Tests B-Dry heat(IEC60068-2-2:1974 +IEC 60068-2-2 A:1976).
EN 60068-2-2:1993/A1:1993,Basic environmental testing procedures — Part 2-2: Tests —Tests B — Dryheat -(IEC60068-2-2:1974/A1:1993).
EN 60068-2-2:1993/A2:1994,Basic environmental testing procedures — Part 2-2:Tests — Tests B— Dryheat – (IEC 60068-2-2:1974/A2:1994).
EN 60068-2-6:1995, Environmental testing— Part 2-6: Tests— Test Fc: Vibration (sinusoidal)(lEC60068-2-6:1995+Corrigendum 1995).
EN 60068-2-27:1993,Basic environmental testing procedures — Part 2:Tests — Test Ea and guidance:Shock(IEC 60068-2-27:1987).
EN 60068-2-30:2005, Environmental testing — Part 2-30:Tests —Test Db: Damp heat, cyclic(12 h + 12 hcycle)(IEC 60068-2-30:2005).
EN 60068-2-42:2003,Environmental testing— Part 2-42:Tests — Test Kc: Sulphur dioxide test for contactsand connections(lEC60068-2-42:2003).
EN 60068-2-75:1997, Environmental testing — Part 2-75: Tests —Test Eh: Hammer (IEC 60068-2-75:1997).
For the purposes of this document, the terms and definitions given inEN 54-1:1996 and the following apply.
1/3 octave frequency band as defined in EN 61260.
coverage angle smallest angle between two directions on either side of the reference axis at which the sound pressure level is6 dB less than the sound pressure level on the reference axis.BS EN 54-24 pdf download.