1、* u3 * BRITISH STANDARD STD-BSI BS EN b0849-ENGL L m Zb2Libb7 0709350 TTb D BS EN 60849:1998 IEC 60849:1998 I Sound systems for emergency purposes The European Standard EN 60849: 1998 has the status of a British Standard ICs 13.320 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT L
2、AW BS EN 608491998 This British Standard, having been prepared under the direction of the Electrotechnicai Sector Board, was published under the authority of the Standards Board and comes into effect on 16 June 1998 O BSI 1998 ISBN O 680 29929 6 National foreword This British Standard is the English
3、 language version of EN 608491998. It is identical with IEC 608491998. It supersedes BS 7443:1991 which wiii be withdrawn on 2001-01-01. The UK participation in its preparation was entrusted by Technicai Committee EPY100, Audio, video and multimedia systems and equipment, to Subcommittee EPYl, Equip
4、ment and systems in the field of audio, video and audiovisuai engineering, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible international/European commiee any enquiries on the interpretation, or proposais for change, and keep the UK inkrests infor
5、med, - monitor related intemationai and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Rom 1 January 1997, ail IEC publications have the number 60000 added to the old number. For instance, IEC
6、 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normaJiy include an annex which lists n
7、onnative references to intemationai pubications with their corresponding European publications. The British Standards which implement these inkrnational or European publications may be found in the BSI Standards Catalogue under the section entitied “Inkmationai Standards Correspondence Index”, or by
8、 using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include ail the necessary provisions of a contract Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immun
9、ity from legal obligations. Summary of pages This document comprises a front cover, an inside hnt cover, the EN title page, pages 2 to 24, an inside back cover and a back cover. Amendments issued since publication Amd. No. Date EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60849 April 1998 IC
10、s 13.320;33.160.30 Descriptors: Electroacoustics. electroacoustic equipment, warning systems, emergency call, audible warning devices, loudspeakers, consumer information, personnel evacuation, speech recognition, intelligibility, radio disturbances, sound transmission, definitions, measurements, tes
11、ts English version Sound systems for emergency purposes (IEC 60849: 1 998) Systmes lectroacoustiques pour services de secours (CE1 60849: 1 998) Tonsysteme fr Notrufzwecke (IEC 60849: 1998) This European Standard was approved by CENELEC on 1998-04-01. CENELEC members are bound to comply with the CEN
12、ICENELEC 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 Central Secretariat or to
13、any CENELEC member. This European Standard exists in three officiai versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official v
14、ersions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Elec
15、trotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 1998 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref.
16、 No. EN 60849:1998 E Page 2 EN 60849:1998 Foreword The text of document 1 OOC/188/FOIS, future edition 2 of IEC 60849, prepared by SC 1 OOC, Audio, video and multimedia subsystems and equipment, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parall
17、el vote and was approved by CENELEC as EN 60849 on 1998-04-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1 999-0 1 -0 1 - latest date by which the national standards c
18、onflicting with the EN have to be withdrawn (daw) 2001-01-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes 8 and ZA are normative and annexes A, C and D are informative. Annex ZA has bee
19、n added by CENELEC. Endorsement notice The text of the International Standard IEC 60849:1998 was approved by CENELEC as a European Standard without any modification. STD-BSI BS EN bO84S-ENGL 1778 m Lb24bbS 0709354 b4L m Clause Page 3 EN 60849:1998 CONTENTS 1 2 3 4 5 6 7 Scope and object . 1.1 Scope
20、1.2 Object Normative references Definitions . General system requirements 4.1 Principal features . 4.2 Responsible person 4.3 Priorities 4.4 Safety requirements ; System technical requirements 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 Speech intelligibility Automatic status indication . Automatic fau
21、lt monitoring Monitoring of software controlled equipment . Interface with emergency detection system . Secondary power supply . Climatic and environmental conditions Marking and symbols for marking . Electrical matching values Connectors Installation requirements . System operation 7.1 Instructions
22、 for operation 7.2 Records to be kept . 7.3 Maintenance Annexes A (informative) Measurement of speech intelligibility . B (normative) Measurement method . C (informative) Attention drawing audible signals D (informative) Bibliography . their corresponding European publications ZA Normative reference
23、s to international publications with Page 4 4 4 4 5 6 6 7 7 8 9 9 9 9 10 10 11 11 12 12 12 12 13 13 13 14 15 18 20 22 23 O BSI 1998 STD.BSI BS EN b0847-ENGL 3778 Lb24bb7 0707355 588 Page 4 EN 60849: 1998 SOUND SYSTEMS FOR EMERGENCY PURPOSES 1 Scope and object 1.1 scope This International Standard ap
24、plies to sound reinforcement and distribution systems to be used to effect a rapid and orderly mobilization of occupants in an indoor or outdoor area in an emergency situation. This standard applies to systems using tone signals and to systems with voice announcements for emergency purposes. NOTE 1
25、- The use of the system for normal sound reinforcement and distribution systems purposes under non- hazardous circumstances Is not excluded. NOTE 2 - It is recommended that the system, when used for emergency purposes, should form part of a Complete facility (equipment, operating procedures and trai
26、ning programmes) for the control of emergencies. NOTE 3 - Sound systems for emergency purposes may be the subject of approval by relevant authorities. 1.2 Object The purpose of this standard is to specify the performance requirements for sound systems which are primarily intended to broadcast inform
27、ation 18r the .protection of lives within one or more specified areas in an emergency. The standard gives the characteristics and the methods of test necessary for the specification of the system. 2 Normatlve references The following normative documents contain provisions which, through reference in
28、 this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying th
29、e most recent editions of the normative documents indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 60027: Letter symbols to be used in electrical technology IEC 600651 985, Safety requirements for mains operated electronic and related apparat
30、us for household and similar use IEC 60068-1 :1988, Environmental testing - Part 7: General and guidance IEC 60079: iectrical apparatus for explosive gas atmospheres IEC 60268-1 1 :1987, Sound system equipment - Part 77: Application of connectors for the interconnection of sound system equipment IEC
31、 60268-1 2:1987, Sound system equipment - Part 72: Application of connecton for broadcast and similar use Page 5 EN 60849:1998 IEC 60268-16:-, Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index1 I EC 60364: Electrical installations of buildings
32、IEC 6041 7:1973, Graphical symbols for use on equipment IEC 61 938996, Audio, video and audiovisual systems - Interconnections and matching values - Preferred matching values of analogue signals 3 Definitions For the purpose of this standard, the following definitions apply. 3.1 area of coverage the
33、 area, inside and/or outside a building, where the system meets the requirements laid down in this standard NOTE - Certain parts of an area may be excluded, see 5.1 3.2 loudspeaker zone any part of the area of coverage to which information can be given separately 3.3 information any speech or intend
34、ed audio signal 3.4 audibility that property of sound which allows it to be heard among other sounds NOTE - At present for objective analysis, for example when using the STI equation (see IEC 60268-18). the concept of audibility takes account of the relative loudness and frequency content of the sou
35、nd in comparison with other sounds present at the same time. 3.5 intelligibility a measure of the proportion of the content of a speech message that can be correctly understood NOTE - Satisfactory intelligibility requires adequate audibility and adequate clarity. 3.6 clarity the property of a sound
36、which allows its information-bearing components to be distinguished by a listener. It is related to the freedom of the sound from distortion of all kinds NOTE - There are three kinds of distortion involved in the reduction of clarity of a speech signal in an electroacoustic system: a) amplitude dist
37、ortion, due to non-linearity in electronic equipment and transducers; b) frequency distortion, due to non-uniform frequency response of transducers and selective absorption of high frequencies in acoustic transmission; c) time domain distortion, due to reflection and reverberation in the acoustic do
38、main. 1) To be published. Page 6 EN 60849:1998 3.7 alarm a signal, or condition, warning of an emergency 3.8 warning important notice concerning any change of status which demands attention or activity 3.9 danger risk of harm or damage 3.1 O emergency imminent risk or serious threat to persons or pr
39、operty 3.11 emergency zone a subdivision of the premises such that the occurrence of an emergency within it will be indicated separately from any other subdivision .I 3.12 critical dgnal path all components and interconnections between every emergency broadcast initiation point and the input termina
40、ls on, or within, each loudspeaker enclosure 4 General system requirements 4.1 Principal feature8 A sound system for emergency purposes shall permit the broadcasting of intelligible information of measures to be taken for the protection of lives within one or more specified areas. The following crit
41、eria shall be fulfilled: a) When any alarm is detected, the system shall immediately disable any functions not connected with its emergency role (such as paging, music or general prerecorded announcements being broadcast to the loudspeaker zones requiring emergency broadcasts). b) Unless damaged as
42、a result of the emergency, the system shall be available for operation at all times (or as required by the system specification). c) The system shall be capable of broadcasting within 10 s after primary or secondary power is applied. d) Except during the condition described in 4.lc), the system shal
43、l be capable of broadcasting a first attention-drawing signal within 3 s of being placed in an emergency mode by the operator, or automatically on receipt of a signal from a fire or other detection system. In the latter case, the period of 3 s includes the reaction time of the detection system from
44、the time the emergency is first detected, to commanding the alarm broadcast. e) The system shall be able to broadcast attention-drawing signals and speech messages to one or more areas simultaneously. There shall be at least one appropriate attention-drawing signal alternating with one or more speec
45、h messages for this purpose. STD-BSI BS EN b0849-ENGL 1778 1b2Libb9 0709358 297 Page 7 EN 60849:1998 f) At any time the system operator shall be able to receive, by means of a monitoring system, indications of the correct functioning or otherwise of the relevant parts of the emergency system (see al
46、so 5.2 and 5.3). g) Failure of a single amplifier or loudspeaker circuit shall not result in total loss of coverage in the loudspeaker zone served. NOTE 1 - The monitoring system specified in 4.lf) should indicate the failure of an amplifier or of a loudspeaker circuit. NOTE 2 - Particularly in smal
47、l buildings, It may not be necessary to install two separate loudspeaker circults in one loudspeaker zone. A decision on this matter may be subject to local regulations. h) An attention-drawing signal shall precede the first message for 4 s to 10 s. Successive signals and messages shall then continu
48、e until either changed in accordance with the evacuation procedure, or manually silenced. The interval between successive messages shall not exceed 30 s and attention-drawing signals shall be broadcast whenever periods of silence might otherwise exceed 10 s. Where more than one attention-drawing sig
49、nal is used, such as those used for different types of emergency, each signai shall be clearly distinguishable in character. i) All messages shall be clear, short, unambiguous and as far as practicable, preplanned. Where prerecorded messages are used they shall be held in a non-volatile form, preferably in a solid-state store, and be continuously monitored for availability. The system design shall make it inherently impossible for an external source to corrupt or derange the store or its contents. NOTE - On grounds of reliability, it is preferable not to use
