Passport 15000-Vss Power Distribution; Preparation For Installing Power And Ground Cables - Nortel Passport 15000 Preparation Manual

Passport 15000-VSS power distribution

Preparation for installing power and ground cables

part
TOTAL MAX CURRENT INPUT (at
WCV) =
Note: 34.7 V is the worst case
voltage (WCV), from 36.6 V at the
BIP and an internal drop of 1.9 V. If
you use a low-voltage disconnect
device (LVD), see the last row of this
table.
TOTAL MAX CURRENT INPUT (at
LDO voltage) =
Note: If you use a low-voltage
disconnect device (LVD), then the
WCV is the trip value of the LVD
measured at the the BIP power input,
that is, the low drop-out (LDO)
voltage. In this example, the LDO
voltage is 43.5 V.
(Sheet 2 of 2)
Power distribution for the Passport 15000 Variable Speed Switch (VSS) is
different for each node.
• For the Passport 15000, see "Power distribution and consumption"
(page 125).
• For the Passport 7480, see the section on power in 241-7401-200
Passport 7400 Hardware Description.
The Passport 15000 or 20000 is powered from a dc power source by 2 or 4
feeds to the breaker interface panel (BIP). The dc power source can be from
either an all-dc power plant or a system of ac rectifiers, such as an Astec
MFA150 power system. A feed is two power cables, a negative (battery) and
a positive (battery return). The BIP handles the input power to the
Passport 15000, 20000 Site Requirements and Preparation Guide
Chapter 4 Power and grounding preparation 131
Quantity Maximum power (W)
428.02 W / 34.7 V=
12.3 A
(single feed maximum)
428.02 W / 43.5 V = 9.8
A
5.2S2