Explosion-proof rating:
Explosion-proof equipment with a CT4 rating is classified as Exd IIC T4. BT4 explosion-proof equipment is rated as Exd IIB T4, which is a lower explosion-proof rating than CT4 equipment.
स्थिती श्रेणी | गॅस वर्गीकरण | प्रतिनिधी वायू | किमान इग्निशन स्पार्क एनर्जी |
---|---|---|---|
खाणीखाली | आय | मिथेन | 0.280mJ |
खाणीबाहेर कारखाने | IIA | प्रोपेन | 0.180mJ |
IIB | इथिलीन | 0.060mJ | |
आयआयसी | हायड्रोजन | 0.019mJ |
Applicability:
CT has the widest range of applicability.
Gas environment:
CT is an explosion-proof rating for acetylene and हायड्रोजन पातळी. If there are gases like acetylene or hydrogen in the environment, CT-rated explosion-proof equipment is required. BT-rated equipment is not suitable for acetylene environments and is only considered a moderate स्फोट-पुरावा पातळी.