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Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 20517-2025: Self-contained smoke alarms using scattered light or transmitted light Status: Valid GB 20517: Historical versions
Basic dataStandard ID: GB 20517-2025 (GB20517-2025)Description (Translated English): Self-contained smoke alarms using scattered light or transmitted light Sector / Industry: National Standard Classification of Chinese Standard: C81 Classification of International Standard: 13.220.20 Word Count Estimation: 45,425 Date of Issue: 2025-05-30 Date of Implementation: 2026-06-01 Older Standard (superseded by this standard): GB 20517-2006 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB 20517-2025: Self-contained smoke alarms using scattered light or transmitted light---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 Standard of the People's Republic of China Replaces GB 20517-2006 Independent smoke fire detection alarm Released on 2025-05-30 2026-06-01 implementation State Administration for Market Regulation The National Standardization Administration issued Table of contentsPreface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Categories 2 5 Requirement 2 5.1 General Requirements 2 5.2 Appearance requirements 2 5.3 Performance of main components (devices) 2 5.4 Function 3 5.5 Sound pressure level 4 5.6 Audio Devices 4 5.7 Measurement of response threshold 4 5.8 Direction 4 5.9 Repeatability 4 5.10 Conformance 4 5.11 Battery Failure Alarm Performance 5 5.12 Interconnected alarm function 5 5.13 Reverse polarity performance 5 5.14 Power Performance 5 5.15 Airflow stability 5 5.16 Anti-ambient light interference performance 6 5.17 Climate and environmental tolerance 6 5.18 Mechanical environmental resistance 6 5.19 Electromagnetic compatibility performance 7 5.20 Fire sensitivity performance 8 5.21 Anti-pollution performance of sensor components 8 6 Experiment 8 6.1 General requirements 8 6.2 Functional test 10 6.3 Sound pressure level test 11 6.4 Audio device inspection test 11 6.5 Orientation Test 11 6.6 Repeatability test 12 6.7 Conformance test 12 6.8 Battery failure alarm performance test 12 6.9 Interconnected alarm function test 13 6.10 Reverse polarity performance test 13 6.11 Power supply performance test 14 6.12 Airflow stability test 14 6.13 Test of anti-ambient light interference performance 14 6.14 High temperature (operation) test 15 6.15 Low temperature (operation) test 15 6.16 Cyclic damp heat (operation) test 16 6.17 Sulfur dioxide (SO2) corrosion (durability) test 16 6.18 Impact (operation) test 16 6.19 Collision Test 17 6.20 Vibration (sinusoidal) (operating) test 17 6.21 Radio frequency electromagnetic field radiation immunity test 18 6.22 Radio frequency field induced conducted disturbance immunity test 18 6.23 Electrostatic discharge immunity test 18 6.24 Fire sensitivity test 19 6.25 Sensing component contamination alarm function test 19 7 Inspection Rules 20 7.1 Factory Inspection 20 7.2 Type inspection 20 8 Sign 20 8.1 General Principles 20 8.2 Product Labeling 20 8.3 Quality inspection mark 20 Appendix A (Normative) Threshold Test Smoke Box 21 Appendix B (Normative) Transceiver Performance Requirements 27 Appendix C (Normative) Test smoke 30 Appendix D (Normative) Flashing Device 31 Appendix E (Normative) Combustion Laboratory 32 Appendix F (Normative) Test fire SH1-wood pyrolysis smoldering fire 33 Appendix G (Normative) Test fire SH2-smoldering fire of cotton rope 34 Appendix H (Normative) Test fire SH3-Polyurethane plastic fire 35 Appendix I (Normative) Test fire SH4-n-heptane fire 36 Appendix J (Normative) Collision test equipment 37 Appendix K (Normative) Dust environment simulation test device 39ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB 20517-2006 "Independent smoke fire detection alarm". Compared with GB 20517-2006, in addition to the structural adjustment In addition to editorial changes, the main technical changes are as follows. --- Added a chapter on "Terms and Definitions" (see Chapter 3); --- Changed the classification (see Chapter 4, Chapter 3 of the.2006 edition); --- Added power supply mode (see 5.3.1); --- Added detection principle (see 5.3.2); --- Changed the indicator light requirements (see 5.3.3, 5.3 of the.2006 edition); --- Increased the performance requirements of the transceiver (see 5.3.10); --- Changed the functional requirements (see 5.4, 4.1, 4.4, 4.5 of the.2006 edition); ---Added wireless mute function (see 5.4.2); ---Added data recording and export functions (see 5.4.4); --- Changed the sound pressure level requirements (see 5.5, 4.3 of the.2006 edition); --- Changed the consistency requirements (see 5.10, 5.12 of the.2006 edition); --- Changed the battery failure alarm requirements (see 5.11, 5.4 of the.2006 edition); --- Changed the functional requirements of interconnected alarms (see 5.12, 4.2 of the.2006 edition); --- Changed the reverse polarity performance requirements (see 5.13, 5.5 of the.2006 edition); --- Changed the power supply performance requirements (see 5.14, 4.10 of the.2006 edition); --- Sulfur dioxide (SO2) corrosion (durability) test has been changed (see 5.17, 5.21 of the.2006 edition); --- Added requirements for cyclic damp heat (operation) test (see 5.17); --- Changed the requirements for the impact (operation) test (see 5.18, 5.19 of the.2006 edition); --- Added the requirements for the radiated radio frequency electromagnetic field immunity test and the conducted disturbance immunity test induced by the radio frequency field (see 5.19); --- Changed the fire sensitivity performance requirements (see 5.20, 5.28 of the.2006 edition); --- Added anti-pollution performance requirements for sensing components (see 5.21); --- Deleted the power-on test, voltage fluctuation test, insulation resistance test, withstand voltage test, radiated electromagnetic field test, electrical transient test (see 5.9, 5.13, 5.22, 5.23, 5.26, 5.27 of the.2006 edition); --- Added "threshold test smoke box", "transmitter and receiver performance requirements", "test smoke", "flash device", "combustion laboratory", "test fire SH1- Wood pyrolysis smoldering fire" "Test fire SH2-cotton rope smoldering fire" "Test fire SH3-polyurethane plastic fire" "Test fire SH4-hexane "Alkane fire", "collision test equipment" and "dust environment simulation test device" are included as normative appendices (see Appendix A to Appendix K). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Fire and Rescue Administration. The previous versions of this document and the documents it replaces are as follows. ---First published in.2006 as GB 20517-2006; ---This is the first revision. Independent smoke fire detection alarm1 ScopeThis document defines the terms and definitions of independent smoke fire detection alarms, specifies the classification, requirements, inspection rules and markings, and describes The corresponding test methods were developed. This document applies to the design of independent smoke fire detection alarms (hereinafter referred to as alarms) used in industrial and civil buildings. Design, manufacture and inspection.2 Normative referencesThe contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB 4717-2024 Fire alarm controller GB/T 9969 General principles for instructions for use of industrial products GB 12978 Inspection Rules for Fire Protection Electronic Products GB/T 16838 Environmental test methods and severity levels for fire protection electronic products GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 17626.3 Electromagnetic compatibility test and measurement technology Part 3.Radio frequency electromagnetic field radiation immunity test GB/T 17626.6 Electromagnetic compatibility test and measurement technology - Immunity to conducted disturbances induced by radio frequency fields GB/T 28957.1-2023 Test dust for filter evaluation on road vehicles Part 1.Silicon oxide test dust GB/T 45839-2025 General technical requirements for networking of independent fire detection alarms3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 m value Smoke density measured optically. Note. See A.2 in Appendix A for details. 3.2 y value Smoke concentration measured by ion method. Note. See A.3 in Appendix A for details. 3.3 Fire alarm statusfirealarmstatus The working state of an independent smoke fire detection alarm when it sends out a fire alarm signal. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 20517-2025_English be delivered?Answer: Upon your order, we will start to translate GB 20517-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 20517-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB 20517-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB 20517-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 20517-2025 even if the enforcement date is in future. 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