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AS 3786:2023

[Current]

Smoke alarms using scattered light, transmitted light or ionization (ISO 12239:2021, MOD)

AS 3786:2022 adopts and modifies ISO 12239:2021 for Australia which specifies requirements, test methods, performance criteria, and manufacturer’s instructions for smoke alarms that operate using scattered light, transmitted light, or ionization, and are intended for household or similar residential applications.
Published: 17/02/2023
Pages: 82
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 Conformity
4.2 Optional and additional functions
4.3 Smoke alarm type
4.4 Response threshold value of detectors using scattered or transmitted light
4.5 Alarm condition
4.5.1 Aural indicator
4.5.1.1 Signal temporal pattern
4.5.1.2 Signal sound pressure level — Optional function
4.5.1.3 Signal frequency characteristics — Optional function
4.5.2 Visual indicators
4.5.2.1 Interconnectable smoke alarms — Optional function
4.5.2.2 Non-interconnectable smoke alarms
4.6 External main power source-on visual indicator
4.7 Fault condition visual indicator — Optional function
4.8 Visual indicator visibility
4.9 Smoke alarm signals
4.10 Test facility
4.11 Means of calibration
4.12 User-replaceable components
4.13 Main power source
4.13.1 General
4.13.2 Internal
4.13.3 External
4.14 Standby power source
4.14.1 General
4.14.1.1
4.14.1.2
4.14.2 Monitoring of standby power source
4.14.3 Standby power source low condition silence — Optional function
4.15 External power supply equipment
4.16 Battery connections
4.16.1
4.16.2
4.17 User-replaceable battery
4.17.1 General
4.17.2 Indication
4.18 Electrical safety
4.19 Battery — disconnect facility
4.20 Connection of external connectable devices
4.21 Terminals for external conductors
4.21.1
4.21.2
4.21.3
4.22 Protection against the ingress of foreign bodies
4.23 Interconnectable smoke alarms — Optional function
4.23.1 General
4.24 Alarm-silence facility — Optional function
4.25 Temporary disablement — Optional function
4.26 Radioactive material in type B smoke alarms
4.26.1
4.26.2
4.26.3
4.27 Smoke alarms with voice — Optional function
4.27.1 General
4.27.2 Voice messages
4.28 Smoke alarms using radio frequency links — Optional function
4.28.1 General
4.28.2 Response time
4.28.3 Radio frequency link range
4.28.4 Identification code verification
4.28.5 Environmental requirements for radio frequency interconnected smoke alarms
4.29 Response to slowly developing fires (drift compensation) — Optional function
4.30 Marking
4.30.1 General
4.30.2 Smoke alarm
4.30.2.1
4.30.2.2
4.31 Packaging
4.32 Hardware documentation
4.32.1
4.32.2
4.33 Additional requirements for software-controlled smoke alarms
4.33.1 General
4.33.2 Software documentation
4.33.2.2
4.33.3 Software design
4.33.4 Storage of programs and data
4.33.4.1
4.33.4.2
5 Tests
5.1 General
5.1.1 Optional functions
5.1.2 Atmospheric conditions for tests
5.1.3 Operating conditions for tests
5.1.4 Mounting arrangements
5.1.5 Tolerances
5.1.6 Measurement of response threshold value
5.1.7 Provision for tests
5.1.8 Test schedule
5.1.9 Test report
5.2 Directional dependence
5.2.1 Object of test
5.2.2 Test procedure
5.2.3 Requirements
5.3 Initial sensitivity
5.3.1 Object of test
5.3.2 Test procedure
5.3.3 Requirement
5.4 Repeatability
5.4.1 Object of test
5.4.2 Test procedure
5.4.3 Requirements
5.5 Air movement
5.5.1 Object of test
5.5.2 Test procedure
5.5.3 Requirements
5.6 Dazzling
5.6.1 Object of test
5.6.2 Test procedure
5.6.3 Requirements
5.7 Dry heat (operational)
5.7.1 Object of test
5.7.2 Test procedure
5.7.2.1 Reference
5.7.2.2 State of specimen during conditioning
5.7.2.3 Conditioning
5.7.2.4 Measurements during conditioning
5.7.2.5 Final measurements
5.7.3 Requirements
5.8 Cold (operational)
5.8.1 Object of test
5.8.2 Test procedure
5.8.2.1 Reference
5.8.2.2 State of specimen during conditioning
5.8.2.3 Conditioning
5.8.2.4 Measurements during conditioning
5.8.2.5 Final measurements
5.8.3 Requirement
5.9 Damp heat (operational)
5.9.1 Object of test
5.9.2 Test procedure
5.9.2.1 Reference
5.9.2.2 State of the specimen during conditioning
5.9.2.3 Conditioning
5.9.2.4 Measurements during conditioning
5.9.2.5 Final measurements
5.9.3 Requirements
5.10 Sulfur dioxide (SO2) corrosion
5.10.1 Object of test
5.10.2 Test procedure
5.10.2.1 Reference
5.10.2.2 State of the specimen during conditioning
5.10.2.3 Conditioning
5.10.2.4 Final measurements
5.10.3 Requirements
5.11 Impact (operational)
5.11.1 Object of test
5.11.2 Test procedure
5.11.2.1 Apparatus
5.11.2.2 State of the specimen during conditioning
5.11.2.3 Conditioning
5.11.2.4 Measurements during conditioning
5.11.2.5 Final measurements
5.11.3 Requirements
5.12 Vibration, sinusoidal (operational)
5.12.1 Object of test
5.12.2 Test procedure
5.12.2.1 Reference
5.12.2.2 State of the specimen during conditioning
5.12.2.3 Conditioning
5.12.2.4 Measurements during conditioning
5.12.2.5 Final measurements
5.12.3 Requirements
5.13 Vibration, sinusoidal (endurance)
5.13.1 Object of test
5.13.2 Test procedure
5.13.2.1 Reference
5.13.2.2 State of the specimen during conditioning
5.13.2.3 Conditioning
5.13.2.4 Final measurements
5.13.3 Requirements
5.14 Extended temperature (operational) — optional function
5.14.1 Object of test
5.14.2 Test procedure
5.14.3 Requirement
5.15 Electromagnetic compatibility (EMC) immunity tests (operational)
5.15.1
5.15.2
5.16 Fire sensitivity
5.16.1 Object of test
5.16.2 Test procedure
5.16.2.1 Principle of test
5.16.2.2 Test fires
5.16.2.3 Mounting of the specimens
5.16.2.4 Initial conditions
5.16.2.5 Recording of the fire parameters and response values
5.16.3 Requirements
5.17 Battery-low condition
5.17.1 Object of test
5.17.2 Test procedure
5.17.3 Requirements
5.18 85 dBA Sound output — Optional function
5.18.1 Object of test
5.18.2 Method of test
5.18.3 Requirements
5.19 70 dBA Sound output — Optional function
5.19.1 Object of test
5.19.2 Method of test
5.19.3 Requirements
5.20 Sounder durability
5.20.1 Object of test
5.20.2 Test procedure
5.20.3 Requirements
5.21 Interconnectable smoke alarms
5.21.1 Object of test
5.21.2 Test procedure
5.21.3 Requirements
5.22 Smoke alarms using radio frequency links
5.22.1 General
5.22.2 Radio frequency range
5.22.2.1 Object of the test
5.22.2.2 Calculation of the free field attenuation
5.22.2.3 Transmission power test procedure
5.22.2.4 Receiver test
5.22.2.4.1 General
5.22.2.4.2 Requirements
5.22.3 Failure of radio link tests
5.22.3.1 General
5.22.3.2 Requirements
5.22.4 Identification codes verification
5.22.4.1 Object of the test
5.22.4.2 Test procedure
5.22.4.3 Test requirement
5.22.5 Environmental tests for radio frequency-interconnected smoke alarms
5.22.5.1 Object of the test
5.22.5.2 Test procedure
5.22.5.3 Test requirements
5.23 Alarm-silence facility
5.23.1 Object of test
5.23.2 Test requirement
5.23.3 Requirements
5.24 Temporary disablement facility
5.24.1 Object of test
5.24.2 Test procedure
5.24.2.1
5.24.3 Requirements
5.25 Variation in supply voltage
5.25.1 Object of test
5.25.2 Test procedure
5.25.3 Requirements
5.26 Polarity reversal
5.26.1 Object of test
5.26.2 Test procedure
5.26.3 Requirements
5.27 Standby power source
5.27.1 Object of test
5.27.2 Test procedure
5.27.3 Requirements
5.28 Electrical safety
5.28.1 Object of test
5.28.2 Test procedure
5.28.2.1 Heating under normal operating conditions
5.28.2.2 Shock hazard under normal operating conditions
5.28.2.3 Insulation requirements
5.28.2.4 Fault conditions
5.28.2.5 Mechanical strength
5.28.2.6 Clearances and creepage distances
5.28.2.7 Components
5.28.2.8 Protection against the start and spread of fire
5.28.2.9 Wiring connections
5.28.3 Requirements
5.29 Sequence timing for smoke alarms with voice
5.29.1 Object of the test
5.29.2 Test procedure
5.29.3 Measurements during conditioning
5.29.4 Requirements
6 Test report
Annex A
Annex B
Annex C
C.1 Obscuration meter
C.2 Measuring ionization chamber (MIC)
C.2.1 General
C.2.2 Operating method and basic construction
C.2.3 Technical data
Annex D
Annex E
Annex F
Annex G
G.1 Fuel
G.2 Hotplate
G.3 Arrangement
G.4 Heating rate
G.5 End-of-test condition
G.6 Test validity criteria
Annex H
H.1 Fuel
H.2 Arrangement
H.3 Ignition
H.4 End-of-test condition
H.5 Test validity criteria
Annex I
I.1 Fuel
I.2 Arrangement
I.3 Ignition
I.4 End-of-test condition
I.5 Test validity criteria
Annex J
J.1 Fuel
J.2 Arrangement
J.3 Ignition
J.4 End-of-test condition
J.5 Test validity criteria
Annex K
K.1
K.2
K.3
K.4
K.5
K.6
K.7
Annex L
Annex M
M.1 General requirements for shielded test equipment
M.2 Determination of the transmission threshold A
M.3 Reference level determination
Annex N
N.1 Principles of compensation for detector drift
N.2 Linear compensation
N.3 Stepwise compensation
N.4 High-rate compensation
N.5 Avoidance of the nonlinear region
Bibliography
Appendix ZZ
ZZ.1 Scope
ZZ.2 Modifications
Cited references in this standard
[Current]
Alarm systems - Part 2: Electromagnetic compatibility - Immunity requirements for components of fire and security alarm systems
[Superseded]
Electroacoustics - Sound level meters - Part 1: Specifications
[Current]
Electromagnetic compatibility (EMC) - Part 4-3 : Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
[Withdrawn]
Information technology equipment - Safety - Part 1: General requirements
[Current]
Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
Content history
[Available Superseded]
[Available Superseded]
[Available Superseded]
DR AS 3786:2021
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