Vertiv | NetSure 7100 Series -48V DC Power System Installation Manual (IM582127000) | Rev. BB
Connections to AC Input Termination Assemblies (582127000 List 40, 41, 42, 43) (For System Mounted
in a Relay Rack)
The AC input termination assemblies provide circular openings at the top for AC input and grounding
conductors. The openings accept 1 inch conduit fittings. It is recommended that AC input wiring be provided
to all rectifier mounting positions, including currently unused positions. This wiring will ease future installation
of rectifiers to meet increased load requirements.
NOTE!
A grounding conductor must be provided with each conduit.
Procedure
Refer to Figure 38, Figure 39, Figure 40, or Figure 41 as these procedures are performed.
Accessing Connections and Routing Wire
1. Remove the two AC input connector covers and the AC input wireway covers by first loosening the
fasteners that secure each of them.
2. Install conduit fittings as required in the top of the AC Input Termination Assembly. Plug buttons are
provided, and must be installed in the openings not being used.
3. Route wiring into the AC Input Termination Assembly through the previously installed conduit fittings.
Making AC Input Connections
1. Make AC input connections as shown in Figure 38, Figure 39, Figure 40, or Figure 41. Connect each
wire by inserting the stripped end into the wire opening, and then tightening the screw. Torque
connections to value shown in the appropriate illustration.
NOTE!
Terminal blocks for a system with maximum possible rectifier shelves shown. Your system may
have fewer terminal blocks than shown.
Making Equipment Grounding Connections
NOTE!
Make equipment grounding connections to earth ground,
not
to the branch circuit neutral
conductor.
1. Connect equipment grounding leads to the frame ground studs using installer-provided ring lugs and
factory-supplied mounting hardware. Torque connections to value shown in the appropriate illustration.
Reinstalling Covers
1. After all AC input and equipment grounding connections have been made and checked, reinstall the two
AC input connector covers and the AC input wireway covers. Secure each by tightening the fasteners.
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