Каталог Weidmuller: Enclosures and Cable Glands

ATEX directive 1999/92/EC
Technical appendix
The system of EPL classifications is shown below.
Firedamp (methane) risk mines (Group I)
EPL Ma
Equipment for installation in a mine with a very high level of
protection. Has sufficient safety that ensure there is no source
of ignition even when the device is operated following an
outbreak of gas.
EPL Mb
Equipment for installation in a mine with a high level of
protection. Has sufficient safety to ensure that there is no source
of ignition in the period of time between the outbreak of gas and
the time the equipment is switched off.
Gases (Group II)
EPL Ga
Equipment for explosive-risk gas atmospheres with a very high
level of protection. No source of ignition is present during normal
operation or when errors occur that cannot be necessarily
expected on a regular basis.
Dust (Group III)
EPL Da
Equipment for combustible dust atmospheres with a very high
level of protection. No source of ignition is present during normal
operation or in very rare faults.
EPL Db
Equipment for combustible dust atmospheres with a high level
of protection. No source of ignition is present during normal
operation or when errors occur that cannot be necessarily
expected on a regular basis.
EPL Dc
Equipment for combustible dust atmospheres with an elevated
level of protection. No source of ignition is present during normal
operation and it can have additional safeguards to ensure that
none is present during faults which happen regularly (e. g. failure
of a lamp).
EPL Gb
Equipment for explosive-risk gas atmospheres with a high level
of protection. No source of ignition is present during normal
operation or when errors occur that cannot be necessarily
expected on a regular basis.
EPL Gc
Equipment for explosive-risk gas atmospheres with an elevated
level of protection. No source of ignition is present during normal
operation and it can have additional safeguards to ensure that
none is present during faults which happen regularly (e. g. failure
of a lamp).
W
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