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ČSN EN 50306-3-ed.2 (347662)
Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 3: Single core and multicore cables screened and thin wall sheathed
Translate name
STANDARD published on 1.11.2020
The information about the standard:
Designation standards: ČSN EN 50306-3-ed.2
Classification mark: 347662
Catalog number: 510223
Publication date standards: 1.11.2020
SKU: NS-1008175
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
The category - similar standards:
Ignitability and burning behaviour of materials and productsCablesRailway rolling stock in general
Annotation of standard text ČSN EN 50306-3-ed.2 (347662):
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 50306-2:2020 is expected to be used in conjunction with EN 50360-1:2020, General requirements and EN 50306-2:2020, Single core cables
Preview of the standard ČSN EN 50306-3-ed.2 (347662)
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