Nortel Meridian 1 Manual page 473

Appendix B: NT7D10 PDU connections
Since one wire is used to feed +48 V to two UEMs (total of two black
wires for +RTN connections) connect as follows:
• For UEM 0 and UEM 1, connect to +RTN0 and add a strap (if not
already installed) between +RTN0 and +RTN1 in the pedestal or in
the junction box if one is provided.
• For UEM 2 and UEM 3, connect to +RTN2 and add a strap (if not
already installed) between +RTN2 and +RTN3 in the pedestal or in
the junction box if one is provided.
6 Connect an orange #8 AWG LRTN wire from the logic return equalizer
(LRE) in the rear of the master power cabinet to LRTN on terminal block
TB1 in the pedestal. See Figure 166.
7 Reinstall the PDU:
• Unseat the blower unit in the front of the pedestal. Set the switch on
the front of the unit to OFF (down). Slide the unit out approximately
75 mm (3 in).
• Insert the PDU and secure it with its retaining screws.
• Insert the blower unit until it is properly plugged into the PDU. Set
the switch to ON.
• Reconnect the system monitor and power cables from module 0 to
the pedestal.
• Reinstall the SDI paddle board on the backplane if it was removed.
• Reinstall the backplane cover.
• Reconnect any cables that were disconnected from the system
monitor.
8 Replace the rear and top covers of the master power cabinet.
Page 435 of 500
System installation procedures