Weidmueller Enclosures & Cable Glands

Directive 1999/92/EC
Technical appendix
The system of EPL classifications (Equipment Protection
Level) is shown below.
Firedamp (methane) risk mines (Group I)
EPL Ma
Equipment for installation in mining applications, offering a
„very high“ level of protection and which do not constitute a
source of ignition during normal operation, or in the event of
rarely occurring faults.
EPL Mb
Equipment for installation in a mine with a high level of
rotection. 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
W.4
2031180000