GB 14287.5-2025 Electrical fire monitoring system—Part 5: Pyrolysis sensing electrical fire monitoring detectors English, Anglais, Englisch, Inglés, えいご
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ICS 55.200
CCS H 57
National Standard of the People's Republic of China
GB 14287.5-2025
Electrical fire monitoring system - Part 5: Pyrolysis sensing electrical fire monitoring detectors
电气火灾监控系统 第5部分：测量热解粒子式电气火灾监控探测器
Issue date: 2025-10-31 Implementation date: 2026-11-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Preface
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Requirements
5.1 General Requirements
5.2 Appearance
5.3 Basic Functions
5.4 Monitoring and Alarm Functions
5.5 Communication Functions
5.6 Performance of Major Components
5.7 Detection and Alarm Performance
6 Test Methods
6.1 General Requirements
6.2 Basic Function Tests
6.3 Monitoring and Alarm Function Tests
6.4 Communication Function Tests
6.5 Detection and Alarm Performance Tests
6.6 Repeatability Tests
6.7 Insulation Resistance Tests
6.8 Leakage Current Tests
6.9 Electrical Strength Tests
7 Inspection Rules
7.1 Factory Inspection
7.2 Type Inspection
8 Marking and Packaging
8.1 Product Marking
8.2 Quality Inspection Marking
8.3 Packaging
Appendix A (Normative) Test for Detection and Alarm Performance
A.1 Pyrolysis Materials
A.2 Test Equipment
A.3 Pyrolysis Test
1 Scope
This document defines the terms for pyrolysis - sensing electrical fire monitoring detectors, specifies their classification, requirements, inspection rules, and markings, and describes the corresponding test methods.
This document applies to pyrolysis - sensing electrical fire monitoring detectors in electrical fire monitoring systems (hereinafter referred to as "detectors") for the design, manufacture, and inspection of such products.
2 Normative References
The contents of the following documents are incorporated into this document by reference. Where a date is specified, only the version corresponding to that date applies to this document. Where no date is specified, the latest version (including all amendments) applies to this document.
GB/T 9969 General Rules for Industrial Product Instruction Manuals
GB 12978 Inspection Rules for Fire Protection Electronic Products
GB 14287 (all parts) Electrical Fire Monitoring Systems
GB/T 16838 Environmental Test Methods and Severity Levels for Fire Protection Electronic Products
GB/T 17626.2 Electromagnetic Compatibility — Tests and Measurement Techniques — Electrostatic Discharge Immunity Test
GB/T 17626.3 Electromagnetic Compatibility — Tests and Measurement Techniques — Part 3: Radiated RF Field Immunity Test
GB/T 17626.4 Electromagnetic Compatibility — Tests and Measurement Techniques — Electrical Fast Transient/Burst Immunity Test
GB/T 17626.5 Electromagnetic Compatibility — Tests and Measurement Techniques — Surge (Impulse) Immunity Test
GB/T 17626.6 Electromagnetic Compatibility — Tests and Measurement Techniques — Conducted RF Immunity Test
GB/T 17626.8 Electromagnetic Compatibility — Tests and Measurement Techniques — Power Frequency Magnetic Field Immunity Test
GB/T 17626.11 Electromagnetic Compatibility — Tests and Measurement Techniques — Part 11: Immunity Test for Voltage Dips, Short Interruptions, and Voltage Variations for Equipment with Each Phase Input Current ≤ 16 A
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Pyrolysis - Sensing Electrical Fire Monitoring Detector
A detector that monitors changes in pyrolysis particles in the protected area.
3.1.1
Independent Pyrolysis - Sensing Electrical Fire Monitoring Detector
A detector that independently detects changes in pyrolysis particles in the protected area and issues audible and visual alarm signals.
Note: Abbreviated as "independent detector".
3.1.2
Non - Independent Pyrolysis - Sensing Electrical Fire Monitoring Detector
A detector that detects changes in pyrolysis particles in the protected area and transmits relevant information to an electrical fire monitoring device.
Note: Abbreviated as "non - independent detector".
3.2
Combined Multi - Sensing Electrical Fire Monitoring Detector
A detector with multiple sensors that can monitor two or more physical quantities (such as residual current, temperature, fault arcs, pyrolysis particles, and insulation performance) in the protected area.
3.3
Signal Processing Unit
A unit that receives measurement data from pyrolysis particle sensors and processes the data.
4 Classification
Detectors are classified by their mode of operation as follows:
a) Independent;
b) Non - independent.
5 Requirements
5.1 General Requirements
Detectors shall meet the requirements of this chapter and be tested in accordance with Chapter 6 to confirm compliance with these requirements. Combined multi - sensing electrical fire monitoring detectors shall also meet the requirements of the corresponding parts of GB 14287 (all parts).
5.2 Appearance
The surface of the detector shall show no signs of corrosion, peeling of coatings, or bubbling, and no obvious scratches, cracks, burrs, or other mechanical damage. Tightened parts shall not be loose.
5.3 Basic Functions
5.3.1 Detectors shall indicate their normal operating state, alarm state, and fault state.
5.3.2 Detectors shall not have the function of disconnecting power distribution circuits.
5.3.3 The power supply for independent detectors shall use AC 220V/50Hz, and the power input terminal shall have a wiring terminal.
5.3.4 When the protected area meets the alarm conditions, the detector shall light up the alarm indicator. For non - independent detectors, the alarm indication shall remain until the connected electrical fire monitoring device is reset; for independent detectors, the alarm indication shall remain until manually reset.
5.3.5 For non - independent detectors with external sensors, when the connection line between the detector and the external sensor is open - circuited or short - circuited, the detector shall transmit a fault signal to the connected electrical fire monitoring device.
5.3.6 The alarm set value of the detector shall be set on the detector or the connected electrical fire monitoring device, but shall be achieved through dedicated tools, passwords, or other means.
