Datasheet

3232
Hazardous areas
Hazardous Areas are those locations
where a potentially explosive at-
mosphere may exist.
Use of equipment (including en-
closures) in Hazardous Areas is high-
ly regulated. Selection of equipment
must take into account the regula-
tions of the country in which it is to
be used and the acceptability of the
third party certificate to that country.
Prior to selecting equipment (in-
cluding enclosures) for Hazardous
Area use, the Gas Grouping, Zone
Classification and temperature Clas-
sification assessments must be
made.
Gas Grouping
Group I Those found in Mining
only (underground
fire damp methane)
Group II Those found in
Surface industry and
“offshore” installations
Zone Classification
Having established the hazardous
substances, the likelihood of the
explosion risk also needs to be
considered. This is simplified by a
zoning method in International and
European standards as follows:
Zone 0 Hazard continuously
present or present for
long periods
Zone 1 Hazards likely to be
present
Zone 2 Hazard unlikely to be
present or only
present for short
periods of time, for
example under fault
conditions
Temperature
Classification
In order to establish the suitability
of apparatus for use in a hazardous
area from the view point of hot sur-
faces, apparatus is awarded a T-
rating, corresponding to its maximum
surface temperature under certain
Ensto CUBO EX enclosures
IP 66/67
The CUBO EX enclosure range
made of polycarbonate, aluminium
and polyester (PCP 4 and 7, ALP 7
and GRP 7) is designed for use in
hazardous areas. Design, produc-
tion and testing follow international
standards. The enclosures have
been tested according to standards
EN 50014 and EN 50019.