Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
64
5.6.7
Replacing a Battery or Load Disconnect Contactor in a List 20, 25 Distribution
Cabinet
DANGER!
Adhere to the “Important Safety Instructions” presented at the front of this document.
DANGER!
All sources of AC and DC power must be completely disconnected from this power 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 5.15 and Figure 5.16 as this procedure is performed.
Removing the Contactor
1.
Verify all AC and DC power sources are disconnected from the power system.
2.
Remove the rear top shield.
3.
Remove the top rear shield.
4.
Remove the battery and battery return busbar assemblies. See Figure 5.15.
5.
Remove the shield below the battery and battery return busbar assemblies. See Figure 5.15.
6.
Disconnect the wiring to the contactor by unplugging the quick disconnects.
7.
Note the orientation of the contactor to ensure the replacement is installed the same way. Unbolt the contactor (4-places)
and remove.
Installing the Replacement Contactor
1.
Position the replacement contactor oriented the same way as the old.
2.
Secure the contactor with the hardware removed above. Refer to Figure 5.15 for hardware build-up and recommended
torque.
3.
Replace the wiring to the contactor by plugging-in the quick disconnects. Refer to Figure 5.15 and Figure 5.16.
4.
Replace the shield below the battery and battery return busbar assemblies. See Figure 5.15.
5.
Replace the battery and battery return busbar assemblies. See
Figure 5.15 for hardware build-up and recommended torque.
6.
Replace the top rear shield.
7.
Replace the rear top shield.
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
(IM582137100) for a startup procedure.
3.
Verify no alarms are active.
