Security Systems BU Communication Systems IEC 60849 Sound

Security Systems BU Communication Systems IEC 60849 Sound system for emergency purposes 29 -10 -2020 Slide 1

Security Systems BU Communication Systems Introduction Sound system for emergency purposes “. . . sound reinforcement and distribution systems to be used for rapid and orderly mobilization of occupants in case of an emergency situation” 29 -10 -2020 Slide 2

Security Systems BU Communication Systems Introduction Sound system for emergency purposes “. . should be part of a complete facility for the control of emergencies, including equipment, operation instructions and training. . . ” 29 -10 -2020 Slide 3

Security Systems BU Communication Systems International standards è Emergency Sound System standards in various countries: 29 -10 -2020 IEC 60849 EN 60849 BS 5839 -8 VDE 0828 NEN 2575 CNS 10522 AS 60849 CP 25 Slide 4

Security Systems BU Communication Systems System overview Public Address system Routing and switching 29 -10 -2020 Slide 5

Security Systems BU Communication Systems System overview Emergency Sound System Fire detection Routing and switching Emergency!! Supervise and report 29 -10 -2020 Slide 6

Security Systems BU Communication Systems Contents from the standard Level of attention signals 6 - 25 d. B above noise level 65 -75 d. BA Back ground noise Speech 29 -10 -2020 Slide 8

Security Systems BU Communication Systems Contents from the standard Structure of attention signals and messages Attention Messages Message 1 Message 2 Repeated 29 -10 -2020 t Slide 9

Security Systems BU Communication Systems Contents from the standard Structure of attention signals and messages “live speech should be able to take over” Attention Messages Message 1 Message Live speech 2 Repeated Manual. 29 -10 -2020 t Slide 10

Security Systems BU Communication Systems Contents from the standard • System requirements • Available at all time • Reaction time after alarm < 3 sec. • Broadcast to more than one areas simultaneously • Indications of status of relevant parts • Clear short messages, stored in a non-volatile form • Messages and settings shall be protected 29 -10 -2020 Slide 11

Security Systems BU Communication Systems Contents from the standard • System requirements • Speech intelligibility, CIS equal or better than 0. 7 • Secondary power supply • Fault indication within < 100 sec. • Storage of at least 99 failures 29 -10 -2020 Slide 12

Security Systems BU Communication Systems Contents from the standard • System requirements • Automatic status indication • System status • Power supply status • Fault condition 29 -10 -2020 Slide 13

Security Systems BU Communication Systems Contents from the standard • System requirements • Fault monitoring • Primary and secondary power supply • Microphones • Total audio path • Amplifier and back-up amplifier • Pre-recorded messages and signal generator • Loudspeaker circuits • µ Processor 29 -10 -2020 Slide 14

Security Systems BU Communication Systems Contents from the standard • Requirements at Fireman’s locations • Control of: • Emergency microphone • Zone selection • Selection of pre-recorded messages • Alarm reset • Sounder activated by any fault 29 -10 -2020 Slide 15

Security Systems BU Communication Systems Contents from the standard • Requirements at Fireman’s locations • Indications on: • System availability • Power supply availability • Any fault condition • Status of individual zones 29 -10 -2020 Slide 16

Security Systems BU Communication Systems Contents from the standard Loudspeaker circuits • Two independent circuits per zone • Fire rated wiring/connection • Loudspeakers • fire dome • ceramic termination block • thermal fuse 29 -10 -2020 Slide 17

Security Systems BU Communication Systems Contents from the standard Secondary power supply At least 24 hrs stand-by followed by min. 30 minutes evac. recharging to 80% within 24 hrs 29 -10 -2020 Slide 18

Security Systems BU Communication Systems Contents from the standard Documentation • Instruction manuals • Maintenance instructions • Emergency procedures • Records to be kept • Installation details • Test en Maintenance log book with date and time 29 -10 -2020 Slide 19