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  • BSI
    BS EN 50306-3:2020 Railway applications. Railway rolling stock cables having special fire performance. Thin wall - Single core and multicore cables screened and thin wall sheathed
    Edition: 2020
    $316.70
    / user per year

Description of BS EN 50306-3:2020 2020

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

Screened (0,5 mm2 to 2,5 mm2, number of cores from 1 to 8).

All cables have stranded tinned copper conductors, and thin wall thickness, halogen-free, insulation and sheath. 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 50306-3:2020 is expected to be used in conjunction with EN 50306-1:2020, General Requirements, and EN 50306-2:2020, Single core cables.



Standard NumberBS EN 50306-3:2020
TitleRailway applications. Railway rolling stock cables having special fire performance. Thin wall - Single core and multicore cables screened and thin wall sheathed
StatusDefinitive
Publication Date2020-04-01
ReplacesBS EN 50306-3:2002
Identical National Standard OfEN 50306-3
DescriptorsTemperature, Multicore cables, Dimensions, Electric conductors, Fire safety, Electric cables, Single-core cables, Insulated cables, Fire resistance, Sheathed cables, Flame propagation, Rated voltage, Sheathed conductors, Copper, Electric wiring systems, Electric wires, Railway vehicles
ICS45.060.01 Railway rolling stock in general, 29.060.20 Cables
CommitteeGEL/20/12
ISBN978 0 580 93928 0
PublisherBSI
Pages20

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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