RAD Data comm LRS-24 - Manual (Page 32)

Chapter 2 Installation and Setup LRS-24 Installation and Operation Manual
2-4 Site Requirements and Prerequisites
2.2 Site Requirements and Prerequisites
This section describes how to prepare the site for installation of the LRS-24 hub.
AC Power
Install the LRS-24 chassis with AC power supply modules within 1.5m (5 feet) of an
easily accessible, grounded, 100 to 240 VAC outlet.
DC Power
LRS-24 chassis with DC power supply modules require a –48 VDC power source.
Since no power switch is provided for the DC power supply modules, connect the
DC power to LRS-24 through a circuit breaker located close to LRS-24. This
provides overcurrent protection for the input power line, and enables turning off
power to LRS-24.
Grounding
The LRS-24 case must be properly grounded at all times, both to protect the
user and to prevent possible damage to equipment. It will prevent damage
when a fault condition occurs on the lines connected to the equipment, such
as lightning stroke or contact with high-voltage power lines.
Never connect cables to an LRS-24 that is not properly grounded. Any
interruption of the protective (grounding) connection inside or outside the
equipment or the disconnection of the protective ground terminal can make
this equipment dangerous. Intentional interruption is prohibited. Before
switching on this equipment and before connecting any other cable, the
protective ground terminal of the enclosure must be connected to a protective
ground.
The LRS-24 enclosures are grounded through the protective (grounding) conductor
of the power cable. In addition, each of the LRS-24 power supply interface
modules has a grounding screw located on its front panel. Connect this screw by a
short, wide copper strap to a reliable, low-resistance grounding system.
When LRS-24 is installed in racks, the rack itself should also be grounded in
accordance with standard practice and the locally applicable regulations. Installing
LRS-24 in a grounded rack provides additional protection against fault conditions.
Interface Module Handling Precautions
LRS-24 interface modules are grounded by installation in a grounded LRS-24
chassis.
Warning
Caution
Order from: Cutter Networks Ph:727-398-5252/Fax:727-397-9610 www.bestdatasource.com