Piawaian Kabel Tahan Api untuk Aplikasi Kereta Api (DALAM 45545)
Persekitaran kereta api menuntut keselamatan kebakaran yang ketat kerana ruang tertutup dan jumlah penumpang yang tinggi. DALAM 45545 ialah piawaian Eropah yang mengawal keperluan tingkah laku kebakaran untuk bahan yang digunakan dalam aplikasi kereta api, termasuk abah-abah wayar.
What Is EN 45545?
DALAM 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, DALAM 60332, dan ISO 5659-2 piawaian
Products must be labeled with their compliance level (mis., HL3)
Kesimpulan
DALAM 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.