Nokia of America Corporation BBTRX-22 Benutzerhandbuch

Typical rectifier power system

The following diagram shows the electrical interfaces of a typical power system.

Typical power system

PMJ

PMN

ACF

-48V DC

AC input

power

Alarms to 9926 BBU

DC power feed to equipment

-48V DC return to
frame ground

Legend:

PMJ: Power major alarm
PMN: Power minor alarm

ACF: AC fail

BD: Batteries on discharge, first stage

Denotes contact
closure when
alarm condition
exists

Electrical power requirements for –48‑V DC power systems

Power system requirements

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January 2015

Alcatel-Lucent – Proprietary

Use pursuant to applicable agreements

C-5

R
AFT