Passport 15000-Vss Power Requirements; Power Distribution And Consumption - Nortel Passport 15000 Preparation Manual

Passport 15000-VSS power requirements

Power distribution and consumption

The power supply for the Passport 15000-Variable Speed Switch (VSS) is dc.
Since a VSS is a combination of a Passport 15000 and a Passport 7480, the
power requirements for each is different.
• For the Passport 15000, see "Power requirements" (page 121).
• For the Passport 7480, see the section on power requirements in
241-7401-200 Passport 7400 Hardware Description.
The Passport 15000 or 20000 switch is powered from four field-replaceable
power interface modules (PIMs) located on the back of the shelf. Each PIM
terminates two redundant power feeds from the BIP (either an A feed or B
feed from a single breaker interface module). The filter consists of a passive
low pass LC network that provides EMI filtering to prevent shelf generated
noise from being radiated. Each filter also provides termination for the HSCX
buses and clock signals.
For a Passport 15000 the redundant power feeds are 20 A.
For a Passport 20000 the redundant power feeds are 25 A.
Total power consumption depends on the type and quantity of installed parts.
The total power consumption dictates the minimum gauge of power cable and
the power plant that you can safely use for the Passport 15000 or 20000 (if
you choose not to use the recommended 1/0 AWG cable).
CAUTION
Equipment damage
If you install additional power-consuming hardware parts
in your configuration, you must recalculate the power
consumption (and current required) and install the
appropriate cabling and fuses or breakers, if necessary.
Passport 15000, 20000 Site Requirements and Preparation Guide
Chapter 4 Power and grounding preparation 125
5.2S2