Datasheet

3434
Enclosure specification
Type of Enclosure
Protection Code Principle of Concept Zone Concept Suitability IP Rating Impact Material Examples of Special Application
Resistance Limitations Requirements
Non Incendive EX N Non sparking in normal use Zone 2 IP 54 (min) 7 Nm Portable equipment Luminaries, motors,
Exn 1mm drop test junction boxes
Increased EEx e Non sparking and Zone 1 & 2 IP 54 (min) 7 Nm Luminaries, motors, Safety non Incendive junction boxes Intrinsic Safety EEx i Electrical energy is limited Zone 0, 1, 2 IP 54 (min) None Instrumentation,
below that which could cause Zone 1, 2 control, low power an explosion devices
Pressurized EEx p Pressunzation prevents Zone 1 & 2 IP 40 7 Nm Normally To withstand 1,5 x Control panels,
entry of the external gas and metal max operating pressure Motors, Computers purging is necessary before construction with min. 200 Pa and power is switched on Instruments
Flameproof EEx d Must be capable of Zone 1 & 2 Suggest 7 Nm Generally cast Special consideration of Motors, junction
containing an explosion IP 54 alloysiron flame paths at boxes, luminaires
flange joints and control devices
Oil Immersion EEx o Immersing incendive devices Zone 1 & 2 Sealed and 7 Nm Normally metal Requires pressure relief Heavy current
in oil. BSEN 50015 does not open reservoir construction value to IP 23, over apparatus, allow sparking devices enclosures pressure test of 0,5 bar Transformers and
are permitted for 1 min. instrumentation
Sand/Powder EEx q Covering devices with sand/ Zone 1 & 2 Factory 7 Nm Normally metal Electronic
powder quenches explosions sealed construction assemblies, power caused by sparks or supplies hot surfaces
Encapsulation EEx m Encapsulating devices in Zone 1 & 2 N/A 2 Nm Plastic enclosures must Electronic
insulating material have min. 1 mm wall components
thickness