Cisco ONS 15454, Hardware Installation Manual

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ANSI Power and Ground
For AC power feed, use the power cable shipped with the ONS 15454 M2 and one ground cable. For an AC
power supply, the fuse rating must not exceed 10A, 15A, or 20A. For low input voltage ranges, 100V to
127Vac, the branch circuit protection must not be rated more than 20A. The overcurrent/short circuit protection
must be in accordance with local and national electrical codes. The voltage rating value for AC power ranges
between 100 VAC to 240 VAC depending on the standards in various countries. This product is intended for
use on the TN and TT power systems.
The ONS 15454 M2 has redundant –48 VDC #12 single-hole lug power terminals. The terminals are labeled
RET(A), RET(B), -48V(A), and -48V(B) on the power module.
To install redundant DC power feeds, use four power cables and one ground cable. For a single power feed,
only two power cables (#12 AWG or larger, copper conductor, 194 degrees F [90 degrees C] minimum) and
one ground cable (#6 AWG or larger) are required. Use a conductor with low impedance to ensure circuit
overcurrent protection. However, the conductor must have the capability to safely conduct any faulty current
that might be imposed. For a DC power supply, the fuse rating must not exceed 15A. The voltages –40.5 VDC
and –57.6 VDC are, respectively, the minimum and maximum voltages required to power the chassis. The
nominal steady state voltage is -48 VDC.
Functionality is guaranteed at –40 VDC input voltage, as defined in Telcordia GR-1089-CORE, Issue 5.
Note
We recommend the following wiring conventions, but customer conventions prevail:
• Red wire for battery connections (–48 VDC).
• Black wire for battery return connections (RET).
• The battery return connection is treated as DC-I, as defined in Telcordia GR-1089-CORE, Issue 3.
The ground lug must be a dual-hole type, UL Listed, CSA certified and rated to accept the #6 AWG cable.
Two ground posts with two M5 nuts are provided on the ONS 15454 M2 to accommodate the dual-hole lug.
ETSI Power and Ground
For AC power feed, use the power cable shipped with the ONS 15454 M2 and one ground cable. For an AC
power supply, the fuse rating must not exceed 10A, 15A, or 20A. For low input voltage ranges, 100V to
127Vac, the branch circuit protection must not be rated more than 20A.
The overcurrent/short circuit protection must be in accordance with local and national electrical codes. The
voltage rating value for AC power ranges between 100 VAC to 240 VAC depending on the standards in
various countries. This product is intended for use on the TN and TT power systems.
The ONS 15454 M2 for ETSI has redundant –48 VDC power connectors (DSUB for DC power module) on
the DC power module. To install redundant power feeds, use the two power cables shipped with the ONS
15454 M2 shelf and one ground cable. For a DC power supply, the fuse rating must not exceed 15A. The
voltages –40.5 VDC and –57.6 VDC are, respectively, the minimum and maximum voltages required to power
the chassis. The nominal steady state voltage is -48 VDC.
The ground lug must be a dual-hole type, UL Listed, CSA certified and rated to accept the #6 AWG cable.
Two ground posts with two M5 nuts are provided on the ONS 15454 M2 to accommodate the dual-hole lug.
Only use the power cables shipped with the ONS 15454 M2 shelf.
Caution
Cisco ONS 15454 Hardware Installation Guide
238
Installing the ONS 15454 M2 Shelf
ANSI Power and Ground