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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Install and Connect Cabinets
Page 1-18Connect DC Power and Ground
1
DC Power and Ground (J58890CF Only)
Figure 1-7 shows a typical power and ground layout for a DC-powered cabinet.
The size of the wire required for the -48 volt DC and -48 volt return must ensure
the -48 volt DC supplied by the battery plant is maintained between -42.5 and
-54.2 volts DC at all times for proper operation and to prevent hardware damage.
This procedure applies to both PPN and EPN cabinets.
Figure 1-7. Typical Power and Ground for a DC-Powered Cabinet