GB14287.4-2014

Electrical fire monitoring system―Part 4: Arcing fault detectors

电气火灾监控系统第4部分：故障电弧探测器

GB 14287.4-2014 é uma norma nacional chinesa obrigatória vigente: Electrical fire monitoring system―Part 4: Arcing fault detectors. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de jun. de 2015.

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 arcing fault detectors installed in electrical circuits with a power capacity of 10kW and below in industrial and civil buildings. It covers both independent and non-independent detectors used in electrical fire monitoring systems. This standard is mandatory for manufacturers producing fire monitoring equipment for the Chinese market.

Requisitos técnicos

The standard specifies comprehensive requirements for the operational performance and safety of the detectors. It mandates that detectors must reliably identify arcing faults within 30 seconds when specific thresholds of half-cycle arcs occur within 1 second, while ignoring non-hazardous arcs. Detectors must not trigger false alarms during normal load operations or electromagnetic interference. The standard also defines strict criteria for insulation resistance, dielectric strength, and leakage current to ensure electrical safety. Furthermore, it sets requirements for environmental endurance, ensuring the device functions correctly under extreme temperature, humidity, and mechanical stress conditions. Component-level requirements, such as the visibility of indicator lights and the minimum sound pressure level of audio alarms, are also clearly defined.

Métodos de ensaio

The standard outlines a series of rigorous tests to verify compliance, including arcing fault simulation using carbonized paths and metallic contact methods. It also includes false alarm tests using common household appliances like vacuum cleaners and microwave ovens. Environmental and mechanical tests, such as low-temperature operation, constant humidity, impact, and vibration, are conducted according to GB 16838. Additionally, electromagnetic compatibility (EMC) tests, referencing the GB/T 17626 series, are performed to ensure immunity to electrostatic discharge, radiated electromagnetic fields, and electrical fast transients.

Perguntas frequentes

What products are regulated under GB 14287.4-2014?

It applies to arcing fault detectors installed in electrical circuits of 10kW or less in industrial and civil buildings. It is specifically designed for electrical fire monitoring systems.

How does GB 14287.4-2014 differ from other parts of the GB 14287 series?

It focuses specifically on detecting arcing faults to prevent electrical fires, whereas other parts of the GB 14287 series address residual current or temperature monitoring. This standard mandates strict performance criteria to avoid false alarms from normal electrical loads.

Is compliance with GB 14287.4-2014 mandatory for market access in China?

Yes, Chapters 5, 7, and 8 are mandatory. Manufacturers must comply with these requirements to legally sell their electrical fire monitoring devices in the Chinese market.

The summary above provides a high-level overview of GB 14287.4-2014. 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 14287.4-2014 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