Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
Issue 13 December 2000 Product Description 2 - 29
Rectifier-Converter
Plant
Table 2-H: Rectifier-Converter Plant Specifications
Power Units
ES660, ES660C rectifiers; maximum of four per shelf or nine per
plant
ES680 converters; maximum of five per shelf or ten per plant;
maximum of 20 amperes per shelf
ES681 converters; maximum of 50 amperes per shelf
Note: Primary bus feeds converters; subtract from primary bus
capacity.
Control Unit
MCU: ES646, ES646B, ES648A, ES648B, ES648C, ES648BZ
ACU: ES647
Primary Bus Output
The CPS4000 primary bus output current capacity is reduced by
12.5 amperes for each active converter installed.
The CPS4000 PLUS primary bus output current capacity is
reduced by 15 amperes for each active converter installed.
Secondary Bus 24Vdc or 130Vdc
Output Voltage
ES680: 130Vdc
ES681: 24Vdc
Max. Output Current
ES680: 20 amperes per shelf
ES681: 50 amperes per shelf
Nominal Input Voltage 48/52/54Vdc
Input Voltage Range 38-60Vdc
Max. Input Current
ES680: 16 amperes per converter
ES681: 18 amperes per converter
Efficiency
ES680: 86% typical
ES681: 84% typical*
*The maximum current capacity of the secondary output bus is
50 amperes. Two ES681 converters operating at full-load may be
installed in a -48V CPS shelf or three may be installed in a N+1
redundant configuration.
Voice-band Noise
ES680: <32 dBrnc
ES681: <32 dBrnc
Load Share Accuracy
ES680: 0.4 amperes
ES681: 2.4 amperes
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