
Page 130 of 456 Installing DC power
NN43021-310 Standard 02.01 December 2007
4 Connect the black BATRTN (+48 V) wires.
a. At the 8B/2R or 8B/4R master power cabinet, connect wires to the
+ve bus.
b. At the PDU, connect the wires to the terminal block:
i. Connect modules 0 to + BATRTN 0.
ii. Connect modules 1 to + BATRTN 1.
iii. Connect modules 2 to + BATRTN 2.
iv. Connect modules 3 to + BATRTN 3.
5 Connect an orange #8 AWG (10 mm
2
) 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 46 on page 128.)
6 Reinstall the metal safety cover over the terminal block.
a. Lower the front panel over the mounting screws on the PDU.
b. Tighten the screws holding the cover.
7 Close the covers on the 8B/2R or 8B/4R master power cabinet.
End of Procedure
System monitor connections
When connecting to an 8B/2R or 8B/4R master power cabinet, one
NT8D46AV cable is required to extend the alarm terminal to the master
system monitor in the pedestal. See Figure 46 on page 128.
The orange-colored wire on NT8D46AV marked “ALARM” extends from
any of three alarm terminals on the top of the power cabinet to connector
marked J4 in the system monitor. The remaining “Trip” and “DC ON” wires
on the NT8D46AV cable are not used and should be snipped before installing
the cable.
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