Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
Issue 8 July 1999
Product Description 2 - 1
2
Product Description
Overview
In most telecommunications applications, the output of the
rectifier system is electrically connected in parallel with the
batteries. The rectifiers provide both the power to the telephone
equipment through the plant distribution and the charging and
float current to the batteries. In the event of commercial power
failure, the batteries supply the required dc power to the
telephone equipment. This transition needs no switching
because of the parallel connection of the rectifiers and batteries.
The rectifier provides alarms and accepts control signals from an
external source. It is Underwriters Laboratory (UL) listed and
Canadian Standards Association (CSA) certified. The rectifier
uses controlled ferroresonant technology, which reduces noise
and transients from commercial lines.
All components in the rectifier meet Lucent Technologies’ strict
specifications and reliability standards. The rectifier uses an
extremely efficient free-convection cooling system that keeps
components operating at temperatures well below the
recommended maximum, resulting in high reliability.
All circuits for power control, alarms, voltage regulation, current
limiting, restart, plant interface, and remote monitoring/control
are mounted on replaceable circuit modules. Front access to the
circuit modules simplifies replacement or adjustment, if
required. Standardized modules simplify parts inventory,
resulting in lower costs and better equipment availability.
The rectifier can be used in a plant with or without batteries and
with or without a controller. One each of two input voltages, two
output voltages, and either negative or positive polarity may be
ordered. Optional noise filtering can be added. Each option
