Replacing The Distribution Panel - Vertiv NetSure 7100 User Manual

Vertiv™ NetSure™ 7100 -48 VDC Power System User Manual

5.7.5 Replacing the Distribution Panel

DANGER! All sources of AC and DC power must be completely disconnected from this system before performing this
procedure. Use a voltmeter to verify no DC voltage is present on the system busbars before proceeding.
Procedure
NOTE!
Refer to Figure 5.7 as this procedure is performed.
Removing the Distribution Panel
1. Performing this procedure may activate external alarms. Do one of the following. If possible, disable these alarms. If these
alarms cannot be easily disabled, notify the appropriate personnel to disregard any future alarms associated with this system
while the procedure is being performed.
2. Open the distribution cabinet's front door.
3. Remove the distribution panel cover.
4. Disconnect all system load wiring from the circuit breaker/fuse positions on the distribution panel.
5. Disconnect the alarm wiring from the distribution panel. See Figure 5.7.
6. Remove the hardware securing the system load distribution device busbar to the panel. See Figure 5.7.
7. Remove the hardware securing the distribution panel to the distribution cabinet. Some hardware is located behind the lug
terminal busbars which requires the lug terminal busbars to be removed first. Remove the distribution panel from the
distribution cabinet. See Figure 5.7.
Installing the Distribution Panel
NOTE!
In the following procedure, before making busbar-to-busbar connections, apply a thin coating of electrical anti-
oxidizing compound to the mating surfaces of the busbars.
1. Orient the replacement distribution panel into distribution cabinet, checking to ensure no wires are pinched. Replace the
hardware securing the distribution panel to the distribution cabinet. Refer to Figure 5.7 for hardware build-up and torque.
2. Replace the hardware securing the system load distribution device busbar to the distribution panel. Refer to Figure 5.7 for
hardware build-up and torque.
3. Reconnect the alarm wiring to the distribution panel. See Figure 5.7.
4. Reconnect the load distribution wiring to the circuit breaker/fuse positions on the distribution panel.
5. Transfer the plug-in circuit breakers or fuses from the old distribution panel to the replacement distribution panel.
6. Replace the distribution panel cover.
Restarting the Power System
1. Reconnect the AC and DC power sources to the power system.
2. Start the power system. Refer to the separate Installation Instructions (IM582127000900) for a startup procedure.
3. Close the distribution cabinet's front door.
4. Verify no alarms are active.
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