Ericsson Redback Networks SmartEdge 1200, Руководство по оборудованию

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Connecting the Power Cables
4-16 SmartEdge 1200 Router Hardware Guide
Connect the Power Cables
The SmartEdge 1200 chassis has four power filters mounted on the back panel of the chassis: one filter for
each of the four power sources. Each filter has two connectors, labeled “–48V” and “RTN” for a pair of
power cables. Each power cable must be AWG #4, but AWG # 6 might be acceptable, and installed in
accordance with the NEC or applicable local jurisdiction (outside the United States) installation
requirements. The following DC power source warnings and cautions apply when connecting DC power
sources:
Warning
Risk of electrical shock. The system uses DC power sources, which can cause severe injury.
To reduce the risk, the DC power sources must be installed only in restricted access areas
(dedicated equipment rooms, equipment closets, or the like) in accordance with Articles
110-17, 110-26, and 110-27 of the National Electric Code, ANSI/NFPA 70. Connect the
chassis to a –48 VDC source that is reliably connected to earth.
Warning
Risk of electrical shock. Because a system is fully powered on after all power connections are
made, it can cause shock if a power cable is disconnected from the chassis. To reduce the risk,
a readily accessible disconnect device, such as a fuse in a fuse panel, must be provided in the
fixed wiring for each DC power source. It must be suitable for the rated voltage and current
specified.
Warning
Risk of electrical shock. Safe operation of this equipment requires connection to a ground
point. To reduce the risk of possible injury from voltages on the telecommunications network,
disconnect all telecommunications network lines before disconnecting the unit from the
ground point.
Warning Risk of electrical shock. This equipment uses –48 VDC power, which can cause shock if
inadequate power sources are connected to it. To reduce the risk, verify that the power sources
for the SmartEdge router meet the power specifications provided in the “Warnings” section in
Chapter 3, “Preparing for Installation,” and ensure that DC power cables meet the
specifications provided in the “Physical Specifications” section in the same chapter before
connecting the power cables.
Warning
Risk of electrical shock. After the power cables are connected to the chassis and the fuse
panel, the system is fully powered on; there is no power switch. To reduce the risk, always
remove the fuses for both the A-side and B-side power sources in the fuse panel before
connecting the power cables to the chassis.
Warning Risk of electrical shock. Improper grounding can result in an electrical shock. To reduce the
risk, this equipment must be connected to a protective ground in accordance with the
instructions provided in this guide.