鉄道用途向けの耐火ケーブル規格 (で 45545)

鉄道環境では、密閉された空間と乗客数の多さから、厳しい防火安全性が求められます。. で 45545 鉄道用途で使用される材料の火災挙動要件を管理する欧州規格です。, ワイヤーハーネスを含む.

What Is EN 45545?

で 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, で 60332, とISO 5659-2 基準

Products must be labeled with their compliance level (例えば, HL3)

結論

で 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.