ABB Ability 800xA Series User Manual page 26

2 Hardware Installation
2.3 Installation in Hazardous Locations
• In explosion group IIC and Zone 2, no protected plastic surfaces > 20 cm
allowed; in IIB or dust-Ex, 100 cm
• The hazard of any objects falling onto a Linking Device must be prevented.
• The Linking Device does not meet the requirements of impact protection or IP54
(according to IEC 60529). Thus, it must be installed in a protective enclosure that
meets the requirements for resistance against impact and IP as stated in section
26.4 of IEC/EN 60079-0. This enclosure must be fully mounted and intact. If the
enclosure is damaged, the operation is not permitted.
• The Linking Device is defined as Instrument and Apparatus of Low Energy according
to clause 23 of IEC/EN 60079-15. Thus, the requirement stated in sub-clause C
limiting the transient characteristic to 40 % above the rated voltage has to be adhered
to when mounting the equipment.
• When removing the packaging, ensure that no dirt can enter the enclosure or the
plugs.
• If any vibrations during the operation may cause parts of the plugs to loosen, the
plugs have to be provided with a light firm varnish used for securing screws. An
extraction force of 0.5 Nm has to be achieved at an equivalent thread.
• To circuits of Zone 2, only such equipment may be connected that is suitable for
operation in this zone and has been certified accordingly.
• Components may only be replaced by original spare parts that are also approved
for the use in Ex atmospheres. Spare parts are ordered as complete units giving
the material number stated on the device (marking, type label).
• Only such auxiliary components may be used in potentially explosive atmospheres
that meet all requirements of European and national directives and legislation.
• The environmental conditions specified in the manuals have to be followed strictly.
• The Linking Device is not to be used in systems where cathodic systems for corrosion
protection are in place. Although special precautions such as additional earthing
bridges may allow the use in such systems, the manufacturer has to be consulted
in each case.
• The operator has to provide measures for protection against lightning.
• According to the local conditions and in compliance with the environmental rules,
the operator is responsible to visually inspect the system and to remove dust
settlements every 6 months.
• The company installing the device has to ensure that the transient characteristic is
limited to 40 % above the service voltage.
2PAA114135-610
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