P R O F I B U S P
O W E R
H
U B
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E G M E N T
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O U P L E R
Installation in Hazardous Areas
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
Fuchs Group • Tel.: G49 621 776-0 • USA +1 330 4253555 • Sin65 67799091 • Internet http://www.pepperl-fuchs.com
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Installation in Hazardous Areas
4.1
Installation in Zone 2 Category 3G
The PROFIBUS Power Hub Segment Coupler may be installed in
Zone 2 Category 3G. The protection class is EEx nA C (non-arcing) gas
group IIC, IIB, IIA. Depending on the type of Power Modules used, dif-
ferent topologies and Zone 2 installations can be implemented.
The Fieldbus trunk is always categorized as EEx nA for Zone 2 applica-
tions. Connecting the PROFIBUS Power Hub with the Fuchs
Segment Protector (SPs) allows hot swapping of field devices.
Special safety instructions
EC type examination certificates and EC Certificates of Conformity and/
or the manufacturer’s Declaration of Conformity must be observed. It is
especially important to observe the "Special Conditions" included in
these documents.
•
Connections of non-energy-limited circuits under voltage may only be
made or disconnected during installation or maintenance or for repair
purposes.
•
If it is mounted in the hazardous area of Zone 2 Category 3G, the device
must be mounted in a housing, corresponding to at least protection class
IP 54 in accordance with EN 60529 and suitable for this type of installa-
tion.
•
The possibility of an explosive atmosphere occurring during installation,
maintenance or repairs is evaluated as improbable in Zone 2.
•
Devices that have been operated in general electrical plants must not be
used again after that in electrical plants that are connected to hazardous
areas.
Warning
Warning
Warning
Warning