Westermo EDW-120 - Manual (Page 6)

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SPECIAL CONDITION FOR SAFE USE
Ambient temperature:
This unit is designed for use in extreme ambient temperature conditions as follows:
–25ºC ≤ Ta ≤ +70ºC
Installation in an apparatus cabinet:
The equipment must be installed in an area of not more than pollution degree 2 in accordance with
IEC 60664-1, and in an enclosure that provides a minimum degree of pretection of at least IP54 and
complies with the relevant requirements of EN 60079-0 and EN 60079-15.
Secureness of energisation:
External connections to the equipment must not be inserted or removed unless either the area in
which the equipment is installed is known to be non-hazardous, or the circuits connected have been
de-energised.
Resistance to impact:
This unit requires installation in an apparatus cabinet where adequate resistance to impact is
provided by the apparatus cabinet. See "Installation in an apparatus cabinet" above for requirements
on the external apparatus cabinet.
Resistance to light:
This unit requires installation in an apparatus cabinet where it is protected from light (for example
daylight or light from luminaires). See "Installation in an apparatus cabinet" above for requirements
on the external apparatus cabinet.
Secureness of plugs:
When this unit is installed in explosive atmospheres, all connectors must be mechanically secured to
prevent loosening by the use of cable ties or similar.
Conductor temperature:
When this unit is installed in locations with high ambient temperature, special precautions shall be
taken upon the choice of external conductors and the temperature rating of the conductor(s).
Directive 94/9/EC alongside with other directives:
Directive 2004/108/EC (EMC) applies and to assure a safe performance of this unit under the scope
of Directive 94/9/EC, refer to the electromagnetic immunity level specified under "Type tests and
environmental conditions" in this manual.
Standards and date of compliance
ATEX: EN 60079-0: 2012
EN 60079-15: 2012
IECEx: IEC 60079-0: 2011 EDITION 6
IEC 60079-15: 2010 EDITION 4