Installing the Device
2.2 Cabling Recommendations
2.2
Cabling Recommendations
Siemens does not recommend the use of copper cabling of any length for critical,
real-time substation automation applications. All copper Ethernet ports on
RUGGEDCOM products include transient suppression circuitry to protect against
damage from electrical transients and conform with IEC 61850-3 and IEEE 1613 Class
1 standards. This means that during a transient electrical event, communications
errors or interruptions may occur, but recovery is automatic.
Siemens also does not recommend using copper Ethernet ports to interface with
devices in the field across distances that could produce high levels of ground
potential rise (i.e. greater than 2500 V), during line-to-ground fault conditions.
2.3
Installing the Device in Hazardous Locations
The RUGGEDCOM RS900G is designed to comply with the safety standards for Class
I, Division 2 hazardous locations where concentrations of flammable gases, vapors or
liquids may be present, as opposed to normal operating environments.
IMPORTANT
The device is certified for installation in hazardous environments as a component
only. It is required to be installed in a suitable enclosure where the final combination
is subject to acceptance by an authorized local inspection authority.
Installation and use of the device in a hazardous location should meet the following
special conditions for safe use:
• The device must be installed in a suitable enclosure
• Components must not be substituted for non-Siemens parts
• The device must not be disconnected unless the power has been turned off or
the area is known to be non-hazardous
• The device must be appropriately connected to safety Earth upon installation
Note
For further details of the device's compliance with Class I, Division 2 standards, refer
to
IMPORTANT
Do not disconnect or open equipment unless power has been switched off or the
area is known to be non-hazardous.
IMPORTANT
Débrancher ou ouvrir l'équipment seulement si l'alimnetation a été coupée ou si l'on
sait que la zone ne pose aucun danger.
IMPORTANT
Substitution of the components may impair suitability for Class I, Division 2.
6
RUGGEDCOM RS900G
Installation Manual, 01/2021, C79000-G8976-1025-08
