Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
2 - 12 Product Description Issue 13 December 2000
Power Modules, continued
Features The following paragraphs describe standard features of the -48V CPS
power modules.
• Lightweight, easy to install: These connectorized, pluggable units
may be installed in -48V CPS power plants in less than one minute.
• Simplified plant administration: Power modules may be installed
in a working plant without adjustment and without interruption of
service. System failures are easily corrected by replacing defective
power modules. Defective fans are easily replaced in the field.
• Backward compatible: The CPS4000 PLUS modules are
unconditionally compatible with the existing embedded CPS4000
products. The CPS4000 PLUS modules can be added to existing
systems to provide partial benefits of the CPS4000 PLUS
enhancements.
• Front access only: Power modules and the -48V CPS power plants
may be installed and serviced without the need for rear access.
• User friendly: Front panel LED indicators on power modules, the
Monitoring and Control Units (MCU), and the Alarm Control Unit
(ACU) indicate system status.
• LED test: A push-to-test switch on the plant Monitor and Control
Unit activates all plant alarm and status LED indicators.
• Parallel operation: Power modules operate in parallel with other
power modules.
• Load share: A load share circuit automatically forces the power
modules to apportion the plant load. The load share circuit is made
fail-safe by using an isolated load share bus between power
modules. Upon failure, an inoperative power module is
disconnected from the load share bus.
• Active inrush current limiting: Upon application of the source
voltage, an active circuit limits the peak inrush current, eliminating
nuisance tripping of customer-provided input breakers.
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