
Ground wiring
.................................................................................................................................................................................................................................
Required grounding
Only the PDP must be grounded with the office ground as shown in the figure below.
All the other parts (rack, subracks, ...) are grounded as a result of the physical
mounting (physical/electrical connection of device and rack frame).
NOTE1: If isolated return wire is required (e.g. for the USA domestic market), the
U-bracket (connection between return and ground) has to be removed!
NOTE2: To avoid hazard in case of reversed polarity at power connection, it must
be assured, that in the rack and subrack the DC-Return has no connection to
GND!
Legend:
3
Grounding cable — CC848834974 (yellow/green)
*
The U-bracket has to be removed, if the return wire is
grounded
only
at the external battery (BDFB) source (e.g. valid
for the USA domestic market)
Figure 4-11 PDP grounding
System cabling and final assembly
.................................................................................................................................................................................................................................
365-374-187
Issue 1, December 2005
Lucent Technologies - Proprietary
See notice on first page
4-21