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GB 26851-2026: Audible and / or visual fire alarm signaling appliances
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB 26851-2026	English	699	Add to Cart	5 days [Need to translate]	Audible and / or visual fire alarm signaling appliances
GB 26851-2011	English	399	Add to Cart	3 days [Need to translate]	Audible and/or visual fire alarm signaling appliances

GB 26851-2026: Audible and / or visual fire alarm signaling appliances

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 13.220.20 CCSC81 National Standards of the People's Republic of China Replaces GB 26851-2011 Fire alarm with sound and/or light Published on 2026-02-27 Implemented on 2027-09-01 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.Classification and Naming 2 5 Requirements 2 5.1 General Requirements 2 5.2 Appearance 2 5.3 Performance of Major Components 2 5.4 Parameter Settings 3 5.5 Basic Functions 3 5.6 Alarm signal consistency 3 5.7 Alarm signal performance requirements 3 5.8 Signal Synchronization Function 5 5.9 Operational Reliability 5 5.10 Power Supply Performance 5 5.11 Insulation resistance 6 5.12 Electrical strength 7 5.13 Electromagnetic compatibility performance 7 5.14 Climate and Environmental Tolerance 8 5.15 Mechanical environmental tolerance 9 5.16 Enclosure protection rating 10 5.17 Flame retardant performance of the outer casing. 10 6.Test Methods 10 6.1 General Rules 10 6.2 Basic Function Test 12 6.3 Alarm Signal Consistency Test 12 6.4 Alarm signal performance test 13 6.5 Signal Synchronization Function Test 13 6.6 Operational reliability test 13 6.7 Power Supply Performance Test 14 6.8 Insulation resistance test 15 6.9 Electrical strength test 15 6.10 Electrostatic Discharge Immunity Test 15 6.11 Radio Frequency Electromagnetic Field Radiation Immunity Test 16 6.12 Electrical Fast Transient/Bulk Immunity Test 16 6.13 Surge (Impulse) Immunity Test 16 6.14 Conducted Interference Immunity Test Based on Radio Frequency Field Induction 16 6.15 High Temperature (Operation) Test 17 6.16 Low Temperature (Operation) Test 17 6.17 Alternating Damp Heat (Operation) Test 17 6.18 Sulfur Dioxide (SO2) Corrosion (Durability) Test 18 6.19 Vibration (Sine) (Running) Test 18 6.20 Impact Test 18 6.21 Collision Test 19 6.22 Enclosure Protection Rating Test 19 6.23 Needle Flame Test 19 7.Inspection Rule 19 7.1 Factory Inspection 19 7.2 Type testing 20 8.Mark 20 8.1 Product Marking 20 8.2 Quality Inspection Mark 20 8.3 Durability of the Mark 20 9 Instruction Manual 21 Appendix A (Normative) Method for Measuring the Effective Luminous Intensity of Optical Alarm Signals 22 A.1 Measurement of effective luminous intensity 22 A.2 Test Conditions 22 Appendix B (Normative) Performance Test Methods for Audible and Visual Alarm Signals 23 B.1 Test method for alarm signal performance of wall-mounted alarm devices 23 B.2 Test method for alarm signal performance of ceiling-mounted alarms 23 B.3 Test Conditions 24 Appendix C (Normative) Test Methods for Signal Synchronization Function 26 C.1 Site Layout 26 C.2 Test Procedure 26 C.3 Test Conditions 27

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB 26851-2011 "Fire Alarms and/or Light Alarms". Compared with GB 26851-2011, the main differences are in structural adjustments and editing. Aside from the logical changes, the main technical changes are as follows. a) A chapter on "Terms and Definitions" has been added, along with the terms "fire audible and/or visual alarms," "fire audible alarms," and "fire visual alarms." "Fire alarm device", "fire sound and light alarm device" and "fire information alarm device" and their definitions (see Chapter 3); b) Fire alarm information devices have been added to the product application classification, while gas release alarms have been removed (see 4.1, 3.1 in the.2011 version); c) A classification method based on installation method has been added (see 4.3); d) Appearance requirements have been added (see 5.2); e) Increased performance requirements for key components (see 5.3); f) Added requirements for parameter settings (see 5.4); g) Added basic functional requirements (see 5.5); h) Added requirements for alarm signal consistency (see 5.6); i) Alarm signal performance requirements have been changed (see 5.7, 4.1 of the.2011 version); j) The requirement for signal synchronization function has been added (see 5.8); k) The power supply performance requirements have been changed (see 5.10, 4.3 of the.2011 version); l) The insulation resistance requirements have been changed (see 5.11, 4.4 of the.2011 edition); m) The electrical strength requirements have been changed (see 5.12, 4.5 of the.2011 edition); n) The requirements for electromagnetic compatibility performance have been changed (see 5.13, 4.6 of the.2011 edition); o) Added alternating damp heat (operation) test, deleted constant damp heat (operation) test, and modified high temperature (operation) test and low temperature (operation) test. Test conditions for the (inertia) test and the sulfur dioxide (SO2) corrosion (durability) test (see 5.14, 4.7 of the.2011 edition); p) Added crash testing (see 5.15); q) The requirements for enclosure protection rating have been changed (see 5.16, 4.9 of the.2011 edition); r) Increased requirements for the flame-retardant performance of the casing (see 5.17); s) A method for measuring the effective luminous intensity of the optical alarm signal has been added (see Appendix A); t) A performance test method for audible and visual alarm signals has been added (see Appendix B); u) A test method for signal synchronization function has been added (see Appendix C). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the State Fire and Rescue Administration. The release history of this document and the document it replaces is as follows. ---First published in.2011 as GB 26851-2011; ---This is the first revision. Fire alarm with sound and/or light

1 Scope

This document defines the terminology and definitions for fire alarms (audible and/or visual), and specifies the classification and naming, requirements, inspection rules, marking, and use. The instruction manual describes the corresponding test methods. This document applies to the design, manufacture, and inspection of fire alarm and/or light alarm products used in industrial and civil buildings.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 4208-2017 Degrees of protection provided by enclosures (IP code) GB/T 5169.5-2020 Fire Hazard Testing of Electrical and Electronic Products - Part 5.Test Flame Needle Flame Test Method and Apparatus Validate test methods and guidelines GB/T 9969 General Rules for Instructions for Use of Industrial Products GB 12978 Inspection Rules for Fire Protection Electronic Products GB/T 16838 Environmental testing methods and severity levels for fire protection electronic products GB/T 17626.2 Electromagnetic compatibility testing and measurement techniques - Electrostatic discharge immunity test GB/T 17626.3 Electromagnetic compatibility testing and measurement techniques – Part 3.Radio frequency electromagnetic field radiated immunity testing GB/T 17626.4 Electromagnetic compatibility testing and measurement techniques - Electrical fast transient/burst immunity test GB/T 17626.5 Electromagnetic compatibility testing and measurement techniques - Surge (impulse) immunity test GB/T 17626.6 Electromagnetic compatibility testing and measurement techniques - Conducted disturbance immunity induced by radio frequency fields

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 In an automatic fire alarm system, the control and indication equipment are installed separately. Upon receiving an activation signal from the control and indication equipment, the system... An alarm device that alerts nearby people to a fire by emitting audible and visual alarm signals or displaying text information. Note. Hereinafter referred to as "alarms", fire sound alarms, fire light alarms, fire sound and light alarms and fire information alarms are included. 3.2 A fire alarm that can only emit a fire alarm signal. 3.3 A fire alarm that can only emit a light alarm signal. ...