BS EN 50306-4:2020 Railway Applications Standard

Introducing the BS EN 50306-4:2020, a comprehensive standard that sets the benchmark for railway rolling stock cables with special fire performance. This standard is essential for professionals in the railway industry who are committed to ensuring safety, reliability, and efficiency in their operations.

Overview

The BS EN 50306-4:2020 standard is a critical document for those involved in the design, manufacturing, and maintenance of railway rolling stock cables. It provides detailed specifications for thin wall multicore and multipair cables, which can be either screened or unscreened and sheathed. These cables are designed to offer exceptional fire performance, making them ideal for use in environments where safety is paramount.

Key Features

• Standard Number: BS EN 50306-4:2020
• Pages: 34
• Release Date: April 1, 2020
• ISBN: 978 0 580 93929 7
• Status: Standard

Why Choose BS EN 50306-4:2020?

This standard is indispensable for ensuring that railway rolling stock cables meet the highest safety and performance criteria. Here are some reasons why you should consider integrating this standard into your operations:

Enhanced Fire Safety

Fire safety is a critical concern in the railway industry. The BS EN 50306-4:2020 standard addresses this by specifying cables that have been rigorously tested for fire performance. These cables are designed to minimize the risk of fire propagation, ensuring the safety of passengers and staff.

Versatile Applications

Whether you are dealing with multicore or multipair cables, screened or unscreened, this standard covers a wide range of cable types. This versatility makes it suitable for various applications within the railway sector, from signaling to power distribution.

Compliance and Quality Assurance

Adhering to the BS EN 50306-4:2020 standard ensures that your cables meet European quality and safety requirements. This compliance not only enhances the reliability of your railway systems but also boosts your reputation as a provider of high-quality, safe transportation solutions.

Detailed Specifications

The standard provides in-depth specifications for the construction and performance of railway rolling stock cables. It includes guidelines on materials, dimensions, and testing methods to ensure that the cables meet the necessary fire performance criteria.

Material Specifications

The standard outlines the types of materials that should be used in the construction of these cables. This includes details on insulation, sheathing, and screening materials that are designed to withstand high temperatures and prevent fire spread.

Dimensional Requirements

BS EN 50306-4:2020 specifies the dimensions for various cable types, ensuring that they fit seamlessly into existing railway systems. This includes guidelines on the thickness of insulation and sheathing, as well as the overall diameter of the cables.

Testing and Performance

The standard includes rigorous testing methods to verify the fire performance of the cables. This ensures that they can withstand extreme conditions and continue to function effectively, providing peace of mind to operators and passengers alike.

Conclusion

The BS EN 50306-4:2020 standard is an essential resource for anyone involved in the railway industry. By adhering to this standard, you can ensure that your railway rolling stock cables are safe, reliable, and compliant with the latest European regulations. Invest in the safety and efficiency of your railway systems by integrating this standard into your operations today.

BS EN 50306-4:2020

This standard BS EN 50306-4:2020 Railway applications. Railway rolling stock cables having special fire performance. Thin wall is classified in these ICS categories:

• 45.060.01 Railway rolling stock in general
• 29.060.20 Cables
• 13.220.40 Ignitability and burning behaviour of materials and products

This document specifies requirements for, and constructions and dimensions of, multicore and multipair cables rated voltage U0/U: 300/500 V, of the following types:

• unscreened, sheathed for either exposed or protected wiring (0,5 mm2 to 2,5 mm2, number of cores from 2 to 48);

• screened, sheathed for either exposed or protected wiring (0,5 mm2 to 2,5 mm2, number of cores from 2 to 8);

• unscreened, sheathed for either exposed or protected wiring (0,5 mm2 to 1,5 mm2, number of screened pairs of cores from 2 to 7).

• screened, sheathed for either exposed or protected wiring (0,5 mm2 to 1,5 mm2, number of unscreened pairs of cores from 2 to 7).

All cables have stranded tinned copper conductors, halogen-free, thin wall thickness insulation and standard wall thickness sheath. Cable types are specified for use in exposed situations (Class E), and for protected situations (Class P). They are for use in railway rolling stock as fixed wiring or wiring where limited flexing in operation is encountered.

These cables are rated for occasional thermal stresses causing ageing equivalent to continuous operational life at a temperature of 90 °C. For standard cables this is determined by the acceptance test defined in EN 50305, using accelerated long-term (5 000 h) thermal ageing indicating a 110 °C/20 000 h temperature index. If the customer were to require lifetime predictions this would be demonstrated based on the temperature index of the product as supplied by the manufacturer.

The maximum temperature for short circuit conditions is 160 °C based on duration of 5 s. Under fire conditions the cables exhibit special performance characteristics in respect of maximum permissible flame propagation (flame spread) and maximum permissible emission of smoke and toxic gases. These requirements are specified to permit the cables to satisfy Hazard Level 3 of EN 45545-1 and EN 45545-2.

EN 50306-4:2020 is expected to be used in conjunction with EN 50306-1:2020, General requirements,

EN 50306-2:2020, Single core cables, and EN 50306-3:2020, Single core and multicore cables.