Westermo DDW-221 - Manual (Page 5)

5 6642-22102
Special condition for use
Ambient temperature:
This unit is designed for use in extreme ambient temperature conditions according to the
following: –40 ºC ≤ T
amb
≤ +70 ºC
Degree of protection by enclosure (IP):
This unit is intended for installation in an apparatus cabinet or similar providing adequate
protection against the entry of solid foreign objects or water capable of impairing safety.
The unit shall attain an equivalent degree of protection of IP54 by the installation in the
apparatus cabinet or similar.
Resistance to impact:
This unit is intended for installation in an apparatus cabinet or similar, where the appara-
tus cabinet provides the adequate resistance to impact.
Resistance to light:
This unit is intended for installation in an apparatus cabinet or similar where it is pro-
tected from light (for example daylight or light from luminaries).
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
EN 60079-0 and EN 60079-15
2008-11-01