Lucent Technologies Lineage
®
2000 25A Ferroresonant Rectifier J85502A-1
2 - 2 Product Description
Issue 4 May 1998
Technologies has organized into numbered lists to simplify
ordering.
Ferroresonant
Technology
The J85502A-1 rectifier is a member of the Lucent Technologies
family of Lineage
®
2000 ferroresonant rectifiers. Like all the
rectifiers in the family, it represents a significant advancement in
efficiency, space savings, and serviceability. The rectifier uses
the electronically controlled, closed-loop, ferroresonant
technology developed by Lucent Technologies Bell
Laboratories. This technology provides excellent output
regulation in spite of variations in the incoming commercial line
voltage and frequency and the outgoing current or “load.”
Ferroresonant technology and the rectifier's physical design
features combine to provide reliable service, easy maintenance,
and greater cost-effectiveness on a dollars-per-output-ampere
basis.
Ferroresonant technology also:
•
Eliminates internal switching transients typically associated
with other technologies;
•
Reduces noise and transients from commercial lines. As the
interface between commercial power and telephone
equipment, the ferroresonant rectifier significantly
attenuates noise and lightning surges from commercial
lines;
•
Introduces far less noise into closely coupled telephone
lines due to lower harmonic components in the input current
waveshape compared to other technologies;
•
Provides highly efficient power conversion.
Standard
Features
The J85502A-1, 25-ampere rectifier has the following standard
features:
•
Output current “walk-in”: This circuit controls the time
required for the rectifier to reach its rated output voltage
after it is turned on. Initially, the output voltage is about 80
percent of normal, and gradually increases to the required
value in approximately 10 seconds. As the output voltage
“walks in,” so does output current. This feature minimizes
