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PROFIBUS Power Hub Segment Coupler 3 (SK3)
Hazardous Area Installation and Use
4
Hazardous Area Installation and Use
4.1
Installation in Zone 2, Category 3G
Danger!
Explosion hazard from exposure to potentially explosive gas atmosphere
If the device is installed in Zone 2 without mounting it in a sufficiently suitable enclosure, gas,
dust, water or other external interferences can cause the live device to spark. The sparks can
ignite the surrounding potentially explosive atmosphere.
Only mount the device in an enclosure with degree of protection IP54 according to
IEC/EN 60529. The enclosure must have an EU declaration of conformity according to the
ATEX Directive for at least equipment category 3G.
Danger!
Explosion hazard from damaged electronic components
Premature wear of electronic components in a device that was previously used in a general
electrical installation can cause sparks that can ignite the surrounding potentially explosive
atmosphere.
Never install devices that have already been operated in general electrical installations in
electrical installations used in combination with hazardous areas!
Danger!
Explosion hazard from exposed conductors
Exposed conductors of inadequately attached cables can cause sparks that can ignite the
surrounding potentially explosive atmosphere.
When installing the device ensure that the cables are adequately attached.
Danger!
Explosion hazard from connection damage
Manipulating connections outside of the specified ambient temperature range can lead to
material damage, resulting in an unwanted failure of the connection. This could result in an
increased explosion hazard in potentially explosive atmospheres.
Only manipulate connections in the specified ambient temperature range.
Temperature range: -5 C° ... +70 C°
The PROFIBUS Power Hub Segment Coupler may be installed in Zone 2, equipment category
3G. The motherboard MB-FB-GTR1 has the type of protection Ex ec (increased safety), and
the gateway module HD2-GTR-4PA has the type of protection is Ex nA (non-sparking) for
Zone 2, gas groups IIC, IIB, or IIA.
Depending on the type of power supply modules used, different topologies and Zone 2
installations can be implemented. The fieldbus trunk is always categorized as Ex nA for Zone 2
applications. Connecting the PROFIBUS Power Hub with the Pepperl+Fuchs Segment
Protectors allows for hot swapping of field devices.
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