Cisco 7513, Cisco 7513-Mx, And Cisco 7576 Power Considerations - Cisco 7500 Series Configuration Manual

Chapter 2 Preparing for Installation

Cisco 7513, Cisco 7513-MX, and Cisco 7576 Power Considerations

The 1200W AC-input power supply in the Cisco 7513, Cisco 7513-MX, and Cisco 7576 routers uses a
power factor corrector (PFC) that allows it to operate on input voltage and current within the range of
100 through 240 VAC and 47 through 63 Hz. Follow these precautions and recommendations when
planning power connections to the router. (See
Table 1-5
power specifications.)
Note Wiring codes prevent 20A plugs from being used with most equipment rack power strips. The Cisco
7513, Cisco 7513-MX, or Cisco 7576 installation must comply with all applicable codes. The ground
bond fastening hardware should be of compatible material and preclude loosening, deterioration, and
electrochemical corrosion of hardware and joined material. Installation is approved for use with copper
conductors only. Attachment of the chassis ground receptacles to the central office or other interior
ground system should be made with a 6-AWG, copper ground conductor at a minimum. The Cisco 7513,
Cisco 7513-MX, and Cisco 7576 chassis employ two threaded M5 chassis grounding receptacles. These
receptacles are intended to be bonded directly to the central office or other interior ground system and
are located on the rear of the chassis. The chassis grounding receptacles require M5 screws and locking
hardware, which are not included.
A second, identical power supply is also present in routers configured with the redundant power option;
this ensures that power to the chassis continues uninterrupted if that one power supply fails. It also
provides uninterrupted power if the input power line fails, but only if the power supplies are connected
to separate input lines.
Whenever possible, provide redundant power sources for each power supply installed in the chassis. For
AC-input installations, install an uninterruptible power source where possible. Install proper grounding
to avoid damage from lightning and power surges.
If only one input line is available, and you must connect both power supplies to the same source, the
redundant power supply will provide continuous power if the first power supply fails. It cannot provide
power backup if the input power fails.
Warning This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the
two power supply cords before servicing the unit.
An AC-input-powered Cisco 7513, Cisco 7513-MX, or Cisco 7576 operating at 120 VAC requires a
minimum of 20A service, with a 20A receptacle at the power source. The power cable supplied with the
chassis uses a 20A plug.
source.
OL-5008-03 B0
for a list of Cisco 7513-MX power specifications, and
Figure 2-5
Table 1-4 for a list of Cisco 7513 power specifications,
shows cable features required to connect the 20A plug to your AC
Cisco 7500 Series Installation and Configuration Guide
AC-Input and DC-Input Power Guidelines
Table 1-6 for a list of Cisco 7576
2-9