GB8965.4-2022

Protective clothing—Arc flash protective clothing

防护服装防电弧服

GB 8965.4-2022 é uma norma nacional chinesa obrigatória vigente: Protective clothing—Arc flash protective clothing. Setor: Consumo. Foco: Segurança de produtos. Entrada em vigor: 1 de jan. de 2024.

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 arc flash protective clothing designed to protect personnel from the thermal hazards of momentary arc energy in electrical operations and related workplaces. It is specifically designed for garments protecting the torso and limbs. This standard is mandatory for all manufacturers of electrical safety garments entering the Chinese market. It explicitly excludes insulation protective clothing, electromagnetic protective clothing, and live working shielding clothing. Additionally, it does not cover separate personal protective equipment like arc flash face shields, hoods, gloves, or shoe covers.

Requisitos técnicos

The standard categorizes fabric arc protection performance into 4 distinct levels, determined by the lower value between the Arc Thermal Performance Value (ATPV) and the Breakopen Threshold Energy (EBT). Manufacturers must clearly indicate this arc rating on the garment. It sets strict flame retardant requirements for both fabrics and linings, evaluating properties like after-flame time, after-glow time, and char length, ensuring no melting or dripping occurs. These properties must be maintained after specified washing procedures. The standard also details comprehensive physical and chemical properties for fabrics, including tensile strength, tear strength, bursting strength for knitted fabrics, and thermal stability. Strict limits are placed on formaldehyde content and pH levels to ensure user safety, alongside colorfastness requirements for washing, rubbing, and perspiration. Structural design and sewing requirements mandate that garments use high-temperature resistant accessories, with metal components not contacting the skin directly. Garment design must allow for quick donning and doffing while completely covering exposed body areas, utilizing styles like jacket, separated, or coverall designs.

Métodos de ensaio

The standard mandates an arc flash test method (detailed in Annex B) using copper slug calorimeters to measure incident and transmitted heat energy, determining the ATPV and EBT based on the Stoll curve for second-degree burn prediction. It specifies flame retardancy testing according to GB/T 5455, requiring rigorous washing pre-treatments. Additionally, it references standard textile testing methods for evaluating physical and chemical properties, such as tensile strength (GB/T 3923.1), bursting strength (GB/T 7742.1), and colorfastness (GB/T 3920, GB/T 3921). The standard also provides informative calculation methods for arc hazard energy, referencing international practices like IEEE 1584-2018 and NFPA 70E-2018.

Perguntas frequentes

What products are regulated under GB 8965.4-2022?

This standard regulates arc flash protective clothing used in electrical operations and related workplaces. It specifically excludes insulation protective clothing, electromagnetic protective clothing, and live working shielding clothing.

How is the arc protection level determined under this standard?

The arc rating is determined by the lower value between the Arc Thermal Performance Value (ATPV) and the Breakopen Threshold Energy (EBT). It categorizes fabrics into 4 distinct levels based on their protective capacity.

Does GB 8965.4-2022 align with international standards like IEC or IEEE?

The standard references international methodologies such as IEEE 1584-2018 and NFPA 70E-2018 for arc hazard energy calculations, and aligns its fabric testing methods with the ASTM F1959 and IEC 61482 series frameworks.

The summary above provides a high-level overview of GB 8965.4-2022. To ensure complete compliance for your protective clothing entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 8965.4-2022 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C73
ICS: 13.340.10
Órgão competente: Ministry of Emergency Management
Comitê técnico: National Technical Committee on Personal Protective Equipment of Standardization Administration of China