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EN 50306-2 Cables of Thin wall Part 2:Single core cables

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EN 50306-2 Cables of Thin wall Part 2:Single core cables – Standard
EN 50306-2 Railway applications - Railway rolling stock cables having special fire performance - Thin wall Part 2: Single core cables

EN 50306-2 Cables of Thin wall Part 2:Single core cables – Scope
EN 50306-2 specifies requirements for, and constructions and dimensions of, single core cables, rated 300 V to earth, of the following type: Unscreened (0.5mm2 to 2.5mm2 single core)

All cables have stranded tinned copper conductors and thin wall thickness, halogen-free
insulation. They are for use in railway rolling stock as fixed wiring, or wiring where limited
flexing in operation is encountered. The requirements provide for a continuous operational
life at 105℃, and a maximum temperature for short-circuit conditions of 160℃ based on a duration of 5 seconds.

NOTE 1 Where these single core cables are used as components of sheathed cables, the temperature for continuous operational life depends upon the type of sheath system used. Sheath systems for either 90℃ for 105℃ are defined in other parts of EN 50306.

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 Levels2, 3 or 4 of EN 45545-1.

NOTE 2 Requirements for the emission of smoke and gases are not specified for cables used for Hazard Level 1 of EN 45545-1.

EN 50306-2 Cables of Thin wall Part 2:Single core cables – Reference standards
EN 45545-1 Railway applications - Fire protection of railway vehicles Part 1: General
EN 50265-2-1 Common test methods for cables under fire conditions - Test for resistance to vertical flame propagation for a single insulated conductor or cable - Part 2-1: Procedures - 1 kW pre-mixed flame
EN 50305 Railway applications - Railway rolling stock cables having special fire
performance - Test methods
EN 60811-1-1 Insulating and sheathing materials of electric and optical cables -
Common test methods - Part 1-1: General application – Measurement of thickness and overall dimensions - Tests for determining the mechanical properties

 
 
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