Feuerbeständige Kabelnormen für Bahnanwendungen (IN 45545)
Bahnumgebungen erfordern aufgrund der geschlossenen Räume und des hohen Passagieraufkommens strenge Brandschutzvorschriften. IN 45545 ist die europäische Norm, die die Anforderungen an das Brandverhalten von Materialien regelt, die in Eisenbahnanwendungen verwendet werden, einschließlich Kabelbäumen.
What Is EN 45545?
IN 45545-2 specifies fire testing requirements for materials used in trains.
It classifies materials into hazard levels (HL1, HL2, HL3) based on the type of rolling stock and operating conditions.
Key Testing Criteria
Flame Spread: Determines how quickly fire can propagate along a cable.
Heat Release Rate: Measures the energy emitted during combustion.
Smoke Density and Toxicity: Critical for passenger evacuation and safety.
Material and Design Considerations
Use of low-smoke, halogen-free materials
Flame-retardant insulation and sheathing
Shielding to prevent short-circuits during fire events
Certification Process
Testing performed by certified labs using EN 50305, IN 60332, und ISO 5659-2 Standards
Products must be labeled with their compliance level (Z.B., HL3)
Abschluss
IN 45545 compliance is critical for wire harnesses used in rail systems. By selecting appropriate materials and design approaches, manufacturers can ensure safety while meeting international railway standards.