BS EN 50306-2:2020 pdf free.Railway applications一Railway rolling stock cables having special fire performance一Thin wall.
BS EN 50306-2 This document specifies requirements for, and constructions and dimensions of, single core cables,rated voltage Uo/ U = 300 /300 V, of the following type: Unscreened (0,5 mm2 to 2,5 mm2 single core) These cables are rated for occasional thermal stresses causing ageing equivalent to continuous
operational life at a temperature of 105 °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 125。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 50306-1:2020, General requirements.The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 10002-1, Metallic materials – Tensile testing – Part 1: Method of test at ambient temperature EN 45545-1, Railway applications – Fire protection on railway vehicles – Part 1: General EN 50305:2020, Railway applications – Railway rolling stock cables having special fire performance -Test methods EN 50306-1:2020, Railway applications – Railway rolling stock cables having special fire performance – Thin wall – Part 1: General requirements EN 50334, Marking by inscription for the identification of cores of electric cables EN 60332-1-2，Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test for
vertical flame propagation for a single insulated wire or cable – Procedure for 1 kW pre-mixed flame EN 60811 (all parts), Electric and optical fibre cables – Test methods for non-metallic materials EN 61034-2, Measurement of smoke density of cables burning under defined conditions – Part 2: Test
procedure and requirements EN 62230, Electric cables – Spark-test method BS EN 50306-2 pdf download.