šŸ”„šŸ”„ Donā€™t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

šŸ”
BS EN 50306-4:2020

BS EN 50306-4:2020

$167.15

Railway applications. Railway rolling stock cables having special fire performance. Thin wall – Multicore and multipair screened or not screened sheathed cables

Published By Publication Date Number of Pages
BSI 2020 34
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. Weā€™re here to assist you 24/7.
Email:[email protected]

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 Ā°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 Ā°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 Ā°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.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
9 3 Terms and definitions
4 Multicore cables – sheathed
4.1 General
4.2 Marking and code designation
4.2.1 Marking of cable
10 4.2.2 Code Designation
4.2.3 Marking on the insulation of cores
4.3 Rated voltage
4.4 Construction
4.4.1 Cores
4.4.2 Laying-up of cores
4.4.3 Sheath
12 5 Tests
5.1 Definitions relating to tests
5.2 Voltage test on cable
5.3 Tests at low temperature
13 5.4 Ozone resistance of sheath
5.5 Compatibility
14 5.6 Fire performance
15 6 Multicore cables – screened and sheathed
6.1 General
6.2 Designation, marking and coding
6.2.1 Marking of cable
16 6.2.2 Marking on the insulation of cores
6.3 Rated voltage
6.4 Construction
6.4.1 Cores
6.4.2 Laying-up of cores
6.4.3 Metallic braid screening
17 6.4.4 Sheath
18 7 Tests
7.1 Definitions relating to tests
7.2 Voltage test on cable
19 7.3 Spark test on the sheath
7.4 Tests at low temperature
7.5 Ozone resistance
20 7.6 Fire performance
21 8 Multipair cables – individually screened and sheathed and with an overall sheath
8.1 General
8.2 Designation, marking and coding
8.2.1 Marking of the cable
22 8.2.2 Marking on the insulation of cores
8.2.3 Marking on the sheath of the pair
8.3 Rated voltage
8.4 Construction
8.4.1 Pairs
8.4.2 Laying-up of pairs
23 9 Tests
9.1 Definitions relating to tests
24 9.2 Voltage test
25 10 Multipair cables ā€“ general screened and sheathed
10.1 General
10.2 Designation, marking and coding
10.2.1 Marking of cable
26 10.2.2 Marking on the insulation of cores
10.3 Rated voltage
10.4 Construction
10.4.1 Pairs
10.4.2 Laying-up of pairs
10.4.3 Metallic braid screening
27 10.4.4 Outer sheath of the cable
28 11 Tests
11.1 Definitions relating to tests
11.2 Voltage test – core to screen
31 Annex A (informative)Guidance on selection of cables for type approval

Related products

BS EN 50306-4:2020
$167.15