Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
2 - 14 Product Description Issue 13 December 2000
Power Modules, continued
Features,
continued
• Plant alarms: Alarm reporting for the -48V CPS plants is typical
of telecommunication battery plants. Isolated Form-C contact
closures provide office alarms on a user-accessible connector.
Visual indications of alarms are provided by LEDs located on front
panels of the -48V CPS modules. Alarms are categorized as Power
Major (PMJ), indicating service affecting problems, or Power
Minor (PMN), suggesting that the problem may become service
affecting if additional problems occur.
• EMI Class B Installations: CPS4000 PLUS components,
including the ES648C Monitor and Control Unit, the ES660C
rectifier, ES622C ringing generator, and the J85500R-1 shelf,
provide EMI protection for use in a Class B environment, as
defined in EN55022 or FCC Part 15.
• Dynamic response: Step changes in load over the range of 10 to 90
percent will not cause the voltage measured at the point of
regulation to overshoot or undershoot more than 5 percent. After
the step change the voltage will typically return to and stay within
the regulation band within 300 milliseconds.
• Lightning protection: -48V CPS power modules are capable of
withstanding repeated surges of the following waveforms without
damage (See ANSI C62.41-1991 Category B):
– 1.2/50 microseconds - 8/20 microseconds combination wave
with a peak current of 1000 amperes
– 0.5 microsecond - 100 kHz ring wave with a peak voltage of
2000 volts
A service entrance surge protector is recommended in cabinet
applications. (See IEEE C62.41-1991 for location Category C and
high system exposures.) The service entrance protection should be
coordinated with the protection provided in the rectifier.
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