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BS EN 50306-2:2020

BS EN 50306-2:2020

$102.76

Railway applications. Railway rolling stock cables having special fire performance. Thin wall – Single core cables

Published By Publication Date Number of Pages
BSI 2020 20
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This document specifies requirements for, and constructions and dimensions of, single core cables, rated voltage U0 / 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.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
8 3 Terms and definitions
4 Single-core cables
4.1 General
4.2 Marking and code designation
4.2.1 Marking of cable
4.2.2 Code Designation
9 4.3 Core identification
4.3.1 Single core cables
4.3.2 Multicore/multipair cables
4.4 Rated voltage
4.5 Construction
4.5.1 Conductor
4.5.2 Insulation system
10 5 Tests
5.1 Definitions relating to tests
5.2 Voltage test
11 5.3 Insulation resistance
5.4 Dielectric strength
5.5 Spark test
5.6 DC stability
12 5.7 Strippability and adhesion of insulation to the conductor
5.8 Hot set test
13 5.9 Long term ageing – Thermal endurance
5.10 Mineral oil resistance
5.11 Fuel resistance
5.12 Acid and alkali resistance
14 5.13 Pressure test at high temperature
5.14 Dynamic cut through
5.15 Notch propagation
5.16 Heat Shrinkage
15 5.17 Blocking of cores
5.18 Bending test at low temperature
5.19 Abrasion resistance
5.20 Pliability
16 5.21 Ozone resistance
17 5.22 Stress cracking test
5.23 Fire performance

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BS EN 50306-2:2020
$102.76