GB14287.2-2026

Electrical fire monitoring system—Part 2: Residual current electrical fire monitoring detector

电气火灾监控系统第2部分：剩余电流式电气火灾监控探测器

GB 14287.2-2026 é uma norma nacional chinesa obrigatória que entrará em vigor: Electrical fire monitoring system—Part 2: Residual current electrical fire monitoring detector. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de ago. de 2027.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to the design, manufacture, and testing of residual current electrical fire monitoring detectors used in electrical fire monitoring systems. It covers various product configurations, including independent, non-independent, split-type, and integrated detectors, as well as AC, DC, and AC/DC monitoring types. It is strictly applicable to products operating in low-resistance grounded AC and DC distribution systems.

Requisitos técnicos

The standard specifies comprehensive general requirements and structural criteria, mandating clear indicator lights, displays, and secure terminal configurations. Detectors must not have the function to control the power on/off of the protected circuit. Manufacturers must ensure that non-metallic enclosures meet specific fire resistance performance criteria. Core functional requirements dictate that detectors must reliably issue monitoring alarms within 30 seconds when residual currents exceed thresholds. The standard defines specific alarm setting ranges for AC and DC systems. Additionally, detectors must feature robust fault alarm functions for sensor disconnections or short circuits, and optional electrical parameter monitoring for overvoltage, undervoltage, or overload conditions. A major focus of this revision is enhanced anti-interference performance. Detectors must demonstrate resilience against large current impacts, harmonic currents, and high-frequency loads. Products must effectively suppress capacitive currents to avoid false alarms caused by system leakage capacitance. DC detectors must also adapt to dynamic residual currents. The standard mandates strict electromagnetic compatibility (EMC), requiring detectors to withstand electrostatic discharge, electrical fast transients, and surges. Furthermore, devices must prove long-term operational stability, enduring 21 days of continuous operation without false alarms, while maintaining mechanical and climatic environmental tolerance.

Métodos de ensaio

The standard outlines a rigorous testing program to verify compliance. Key evaluations include the monitoring and alarm function test, which measures response times and alarm action values using precise residual current generators. Environmental and mechanical tests assess durability under vibration, collision, low temperatures, and constant damp heat. Specialized tests are defined for complex electrical environments, including the harmonic adaptability test and the high-frequency load adaptability test. The standard also details procedures for EMC immunity, insulation resistance, dielectric strength, and long-term operational stability testing to ensure reliable field performance.

Perguntas frequentes

What products are regulated under GB 14287.2-2026?

GB 14287.2-2026 applies to residual current electrical fire monitoring detectors used in electrical fire monitoring systems. This includes independent, non-independent, split-type, and integrated detectors designed for AC, DC, or AC/DC power distribution systems.

Are there any major updates from the previous GB 14287.2-2014 version?

The 2026 version introduces enhanced anti-interference requirements, including harmonic adaptability, high-frequency load adaptability, and capacitive current suppression. It also adds new classifications for AC/DC types and introduces requirements for dynamic residual current adaptability for DC systems.

How does GB 14287.2-2026 differ from international standards?

While the standard references international EMC test methodologies (similar to IEC 61000-4 series), it includes China-specific fire safety and electrical performance criteria tailored to the GB 14287 system framework. Manufacturers must specifically adhere to the GB framework for Chinese market compliance.

The summary above provides a high-level overview of GB 14287.2-2026. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 14287.2-2026 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C81
ICS: 13.220.20
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relações

Substitui:GB 14287.2-2014 (Vigente)