Vertiv™ NetSure™ External Distribution Box (EDB) Description and Installation Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
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11
Making Electrical Connections
11.1
Important Safety Instructions
DANGER!
Adhere to the “Important Safety Instructions” starting on page vi.
11.2
General
•
The enclosure provides terminations for two (2) -48 VDC / -58 VDC input power sources (see Figure 2.4 on page 8).
•
The enclosure provides two (2) 26-position DC distribution panels (see Figure 2.4 on page 8).
•
A fiber termination and storage chamber (see Figure 2.4 on page 8) is provided to terminate all trunk fibers.
•
The DC distribution and fiber chambers provide tie-wrap lance panels. The cable entry chamber provides a cable tie bar.
Refer to Figure 2.4 on page 8. Secure wires/cables to the lace bar according to AT&T standards.
11.3
Cable Routing
See “Cable Routing” on page 20.
11.4
Sealing Cable Entries
After cables are installed, refer to ”Sealing Enclosure Cable Entries” on page 33 and seal all cable grommets.
11.5
Connecting RRH (Remote Radio Head) Cables
11.5.1
General
RRHs cables are routed into the bottom chamber of the enclosure through the provided grommets. The cable sheath is removed, and
the trunk cable ground wires are terminated to the tower cable ground bars located in the bottom chamber of the enclosure. The
trunk cable power leads are routed up through the second level of grommets into the DC distribution chamber of the enclosure.
These are than connected to the load circuit breakers and return bars. The trunk cable fiber leads are routed up through the second
level of grommets into the fiber termination chamber. These are than connected to the fiber termination blocks located at the top of
the fiber termination chamber.
There is a cable tie bar located in the bottom chamber of the enclosure. There are lance points on all side walls of the DC distribution
and fiber termination chambers for cable management. Secure wires/cables to the lace bar according to AT&T standards.
11.5.2
Routing RRHs Cables into the Enclosure
RRHs cables are routed into the bottom chamber of the enclosure through the provided grommets. The cable sheath is removed, and
the trunk cable ground wires are terminated to the tower cable ground bars located in the bottom chamber of the enclosure. Refer to
the following procedure.
Procedure
1.
Verify that the enclosure is properly grounded.
2.
Determine the RRHs cable route into the enclosure for your installation site. See also “Cable Routing” on page 20.
3.
Pull the RRHs cables into the bottom chamber of the enclosure through the provided grommets. The RRHs cables power
leads will be routed up through the second level of grommets into the DC distribution chamber of the enclosure as described
in a subsequent procedure. The RRHs cables fiber leads will be routed up through the second level of grommets into the
