Verkkokauppa
SFS-EN 50306-3:2020:en
Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 3: Single core and multicore cables screened and thin wall sheathed
Soveltamisala
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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.
Tämän julkaisun valmistelusta Suomessa vastaa SESKO ry, puh. 050 571 6048.
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.
Tämän julkaisun valmistelusta Suomessa vastaa SESKO ry, puh. 050 571 6048.
Tuoteryhmä(t)
Sidokset
Velvoittavat viittaukset
EN 45545-1:2013 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 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
Tekninen komitea
Vahvistuspäivä
03.04.2020
Julkaisupäivä
07.04.2020
Painos
2
Sivumäärä
19
Julkaisun kieli
englanti