ATEX

ATEX هي توجيه تقييم السلامة ذي أهمية كبيرة. مستمدة من المصطلح الفرنسي "ATmosphères EXplosibles"، وتشير إلى توجيه الاتحاد الأوروبي الذي يحكم المعدات والأنظمة الحامية المصممة لاستخدامها في أجواء قابلة للاشتعال.

قد يصبح فرامل صناعي قياسي مصدر إشعال أثناء التشغيل من خلال الآليات التالية:

Electrical sparks: Electrical sparks may be generated at the terminals of electromagnetic coils, switches, or internal circuits.
Mechanical sparks: Friction or impact between moving components may generate sparks.
High-temperature surfaces: Prolonged braking or high-frequency operation can elevate the brake’s surface temperature, potentially exceeding the auto-ignition point of surrounding explosive gases or dust.
Therefore, in hazardous areas containing flammable gases, vapors, mists, or combustible dust—such as chemical plants, oil rigs, mines, paint shops, and flour mills—ATEX-certified explosion-proof brakes must be used.

فرامل معتمدة من ATEX مصممة خصيصاً ومختبرة بدقة لضمان أنها لا يمكن أن تكون مصدر إشعال. تشمل الميزات الأساسية:

Flameproof Enclosure (‘Ex d’): Electrical components capable of generating sparks (e.g., electromagnetic coils) are fully sealed within a robust enclosure. Even if an internal explosion occurs, the enclosure withstands pressure and prevents flame propagation to the external environment.
Temperature Class Control (‘T’ rating): The brake’s design and material selection ensure that even under worst-case operating conditions, its maximum surface temperature remains well below its certified T-class rating (e.g., T4 rating requires maximum surface temperature not exceeding 135°C), thereby preventing ignition of surrounding materials.
Dust Ignition Protection (Protection by Enclosure, ‘Ex t’): For dusty environments, the enclosure features a high degree of dust sealing (IP rating) to prevent combustible dust from entering the interior, while also controlling surface temperatures.