Ex d Explosion Proof Enclosure
Its function is to withhold an eventual explosion inside the enclosure without allowing it to escape to the surrounding atmosphere by means of flame paths.
This type of enclosure contains all the high power components (motors, transformers, lamps, electronic devices) that might cause arcs and sparks.
Ex i Intrinsic Safety
The protection is based on the principle of the energetic limitation, placing limits for applicable current and tension in dangerous zones also in the case of breakdowns by means of making suitable circuits.
The energy released from the circuit must be less than the minimum air-gas ignition energy present in the hazardous area.
Ex m Reasing Sealing
This is a type of protection based on a resin sealing of the electric parts that might ignite a dangerous mixture through sparking or overheating. It is generally used to protect solenoid valves and electronic circuits.
Ex q Powder Filling
This is a type of protection based on a powder filling of the electric parts that might ignite a dangerous mixture through sparking or overheating. It is generally used to protect control unit and electronic circuit.
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