Vertiv™ NetSure™ 7100 Series -48 VDC Power System User Manual
4.5 Installing a Field Expansion Module Mounting Assembly Spec. No.
588705300 in a System Installed in a Relay Rack
DANGER! Adhere to the “Important Safety Instructions” presented at the front of this document.
CAUTION! During this procedure, the rectifiers in the bottom shelf will be disconnected from the system DC bus and should
be de-energized or removed from the shelf before beginning the procedure.
NOTE!
Refer to Figure 4.7 and Figure 4.8 as this procedure is performed.
Procedure
1. Remove the busbar rear shield from the existing module mounting assemblies. Remove the cut-out panel from the busbar
rear shield by gently bending the panel until it snaps from the busbar rear shield.
2. Remove the hardware from the lowest module mounting assembly’s -48V, return, and +24V or -58V (if present) busbars.
3. Install the expansion module mounting assembly directly below the bottom-most module mounting assembly in the rack.
Use the mounting hardware provided with the expansion module mounting assembly.
Hardware build-up is:
12-24 x 3/4" screw and flat washer, (1) set per side.
12-24 x 3/4" screw and ground washer, (1) set per side.
NOTE!
Install the ground washers so the teeth make contact with the metal on the mounting angles. Torque all screws to 65
in-lbs.
4. Remove the busbar rear shield from the expansion module mounting assembly.
NOTE!
Apply electrical anti-oxidizing compound to busbar mating surfaces before performing the next step.
5. Install the busbars provided with the expansion module mounting assembly between the studs on the expansion module
mounting assembly and the studs on the shelf above it. Secure these busbars to the expansion module mounting assembly
with the hardware provided with the expansion module mounting assembly. Secure these busbars to the shelf above the
expansion module mounting assembly with the hardware previously removed. Torque to 60 in-lbs.
Hardware build-up for these connections are:
M6 Nut,
M6 Belleville lock washer,
M6 flat washer.
6. Disconnect the cable coming from the distribution cabinet from the connector on the bottom-most existing module
mounting assembly and connect this cable to the same connector on the expansion module mounting assembly.
7. Connect the open connector on the bottom-most existing module mounting assembly to the open connector on the
expansion module mounting assembly.
8. Re-install the rear busbar shield previously removed from the existing module mounting assembly. Re-install the rear busbar
shield previously removed from the expansion module mounting assembly.
9. Refer to the Power System Installation Instructions (IM582127000) and connect AC input power to the expansion module
mounting assembly.
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