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INM F300 rev 6
DRAFT - 09 July 2019
DRAFT - 09 July 2019
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ATEX SAFETY INSTRUCTIONS
The following information is in accordance with the Essential Health and Safety
Requirements (Annex II) of the EU Directive 2014/34/EU [the ATEX Directive - safety of
apparatus] and is provided for those locations where the ATEX Directive is applicable.
8 .1 General
a) This equipment must only be installed, operated and maintained by competent
personnel. Such personnel shall have undergone training, which included instruction
on the various types of protection and installation practices, the relevant rules
and regulations, and on the general principles of area classification. Appropriate
refresher training shall be given on a regular basis. [See clause 4.2 of EN 60079-17].
b) This equipment has been designed to provide protection against all the relevant
additional hazards referred to in Annex II of the directive, such as those in clause 1.2.7.
c) This equipment has been designed to meet the requirements of EN 60079-15.
8 .2 Installation
a) The installation must comply with the appropriate European, national and local
regulations, which may include reference to the code of practice EN 60079-14. In
addition, particular industries or end users may have specific requirements relating
to the safety of their installations and these requirements should also be met. For
the majority of installations the Directive 1999/92/EC [the ATEX Directive - safety of
installations] is also applicable.
b) This apparatus may be installed in a safe area and also in a Zone 2 location
providing that the relevant installation conditions are met. When mounted in a
Zone 2 location the apparatus must be provided with an enclosure, which offers an
additional degree of protection appropriate to the area classification.
c) Unless already protected by design, this equipment must be protected by a
suitable enclosure against:
i) mechanical and thermal stresses in excess of those noted in the certification
documentation and the product specification
ii) aggressive substances, excessive dust, moisture and other contaminants.
Read also the Special Conditions for Safe Use (below) for any additional or more
specific information.
Special Conditions of Safe Use for Zone 2 applications
Ex nA IIC T4 Gc and Ex nA [ic] IIC T4 Gc
1. The apparatus is to be installed in an enclosure which maintains a minimum
ingress protection rating of IP54 and meets the enclosure requirements of EN
60079-0, EN 60079-11 and EN 60079-15.
2. Provisions shall be made externally to the apparatus to prevent the rated input
being exceeded by transient disturbances of more than 140% of the rated voltage.
See footnote.
FISCO Ex ic IIC T4 Gc
1. The apparatus is to be installed in an enclosure which maintains a minimum
ingress protection rating of IP54 and meets the enclosure requirements of
EN 60079-0 and EN 60079-11.
Note: All MTL fieldbus power supplies are designed to protect the fieldbus trunk from transient
disturbances on the DC power feed and will meet the requirements of maintaining transient
disturbances below 140% of the rated voltage.
