What is BS EN 60332-3 series?

BS EN 60332-3 is a series of standards developed by the European Committee for Electrotechnical Standardization (Cenelec). These standards specify the requirements and test methods for the vertical flame propagation under defined conditions. The series consists of several parts, each addressing different aspects of flame retardant properties of cables used in various applications.

Part 1: General Testing Procedure

In Part 1 of the BS EN 60332-3 series, the general testing procedure for flame retardancy is described. It provides the guidelines for conducting the vertical flame propagation test on single or bunched cables. The objective is to evaluate the cables' ability to self-extinguish and prevent the fire from spreading along the cable structure.

Part 2: Requirements for Fire Resistant Cables

Part 2 focuses on the requirements for fire resistant cables. These are cables that are designed to maintain their functionality during a fire event and continue providing power or signal transmission when exposed to high temperatures. This part establishes the criteria for fire resistance and sets out the performance levels that cables must meet, such as maintaining circuit integrity under defined fire conditions.

Part 3: Requirements for Test Flames Spread of Vertical CIM or UIM Specimen

This part of the series specifies the requirements for the test flames and test apparatus used in the vertical propagation tests. It defines the parameters for the burner's flame dimensions, temperature and air flow rate to ensure consistent and reproducible test conditions. Additionally, it addresses the configuration and preparation of the cable specimens for testing, including possible modifications depending on the cable type.

Conclusion

The BS EN 60332-3 series plays a significant role in assessing the flame retardant properties of cables. Its comprehensive approach covers various aspects, ranging from general testing procedures to specific requirements for fire resistant cables and test flames. By complying with these standards, cable manufacturers can provide confidence to consumers that their products meet recognized safety criteria and contribute to enhanced fire safety in various applications.