GB21748-2008

Safety requirement for the educational equipment - Basic requirements for equipment and spare parts

教学仪器设备安全要求仪器和零部件的基本要求

GB 21748-2008 é uma norma nacional chinesa obrigatória vigente: Safety requirement for the educational equipment - Basic requirements for equipment and spare parts. Setor: Máquinas. Foco: Segurança de produtos. Entrada em vigor: 1 de ago. de 2008.

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 safety quality requirements for instruments and components used in classroom teaching and laboratories in schools and training institutions. It covers mechanical performance, high/low temperature, noise, vibration, radiation, and electrical safety. It is strictly focused on safety and does not cover other characteristics like style or general performance. Refer to GB 21746-2008 for general principles.

Requisitos técnicos

The standard outlines basic safety quality requirements for educational equipment, emphasizing the selection of raw materials. It prohibits the use of harmful, contaminated, or easily degradable materials, and mandates specific treatments for aging, corrosion, and fire resistance. Manufacturers must prioritize direct safety technologies to eliminate hazards at the source. Additional requirements are specified for mechanical performance, including structural integrity, controls, and fastening methods to prevent injuries from sharp edges, vibrations, or rotating parts. The standard also sets limits on mass for manual handling and mandates protective guards for moving components. Equipment must be designed to withstand foreseeable misuse by students. It establishes strict guidelines for electrical safety, covering insulation, creepage distances, and protective earthing. Protection against direct and indirect contact with electricity is detailed, alongside specific requirements for switches, plugs, and high-voltage power supplies. All electrical instruments must comply with the harshest conditions to ensure maximum safety for non-professional users. The standard addresses radiation and environmental hazards, setting exposure limits and protective measures for ionizing radiation, laser sources, UV, infrared, and radiofrequency radiation. It also includes requirements for noise and vibration control, as well as color coding and warning signs to clearly indicate potential dangers. Refer to IEC 60825-1 for laser classifications.

Métodos de ensaio

The standard references various testing methodologies to verify compliance. Key tests include sharp edge testing according to GB 6675-2003, noise measurement via GB/T 14623, and electrical safety tests under normal and fault conditions as per GB 8898. Manufacturers must also conduct radiation monitoring and laser classification measurements to ensure exposure limits are not exceeded. Specific tests for protective earthing resistance and dielectric strength are also mandated.

Perguntas frequentes

What products are regulated under GB 21748-2008?

GB 21748-2008 regulates instruments and components used in classroom teaching and laboratories in schools and training institutions, covering their safety requirements across mechanical, electrical, thermal, and radiation aspects.

Are there any specific material restrictions in this standard?

Yes, the standard strictly prohibits the use of harmful, contaminated, or easily combustible materials. It also restricts the use of glass for primary school equipment unless properly packaged and reinforced.

How does GB 21748-2008 handle laser safety?

The standard classifies lasers according to GB 7247.1-2001 (equivalent to IEC 60825-1). It only permits Class 1 and Class 2 lasers in unsupervised areas, while Class 3A, 3B, and 4 lasers require strict protective measures and controlled environments.

The summary above provides a high-level overview of GB 21748-2008. To ensure complete compliance for your educational equipment entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 21748-2008 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Segurança
CCS: Y51
ICS: 03.180
Órgão competente: Ministry of Education (Basic Education)
Comitê técnico: National Technical Committee on Educational Equipment of Standardization Administration of China