Vertiv™ NetSure™ External Distribution Box (EDB) Description and Installation Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
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fiber termination chamber of the enclosure as described in a subsequent procedure. Ensure adequate length of cable is
pulled into the enclosure before performing the next step.
4.
For each cable, remove the cable sheath and terminate the ground wire to a tower cable ground bar located in the bottom
chamber of the enclosure.
5.
Secure the cables to the tie bar provided in the cable entry chamber according to AT&T standards.
6.
After all cables are installed, refer to ”Sealing Enclosure Cable Entries” on page 33 and seal all cable grommets.
7.
Continue with the next procedure.
11.5.3
Connecting RRHs Cable Power Leads to the -48 VDC / -58 VDC Distribution Panels
The RRHs cables 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 individual load distribution busbars located on the distribution panels and the return busbars
located adjacent to the distribution panels. Customer must supply lug mounting hardware. See Figure 11.1 for connection points
locations. Torque connections as shown in the illustration. Refer to the following procedure.
Procedure
WARNING!
Observe proper polarity when making connections.
1.
Verify each DC distribution circuit breaker is in the OFF position.
2.
Remove the DC distribution panel shield covering the load lead connection points.
3.
Route the RRHs cables power leads up through the second level of grommets into the DC distribution chamber of the
enclosure.
4.
Connect the RRHs cables power leads per Figure 11.1.
5.
Secure cables to the lace bar in the DC distribution chamber according to AT&T standards.
6.
Replace the shields removed above.
7.
Continue with the next procedure.
11.5.4
Connecting RRHs Cable Fiber Leads to the Fiber Termination Blocks
The RRHs cables 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. Refer to the following procedure.
Procedure
NOTE!
Minor excess fiber trunk cable can be coiled on the spool; however, any large bundle of excess shall be stored in an
external fiber management box.
1.
Route the RRHs cables fiber leads up through the second level of grommets into the fiber termination chamber of the
enclosure.
2.
Connect the RRHs cables fiber leads to the fiber connectors located at the top of the fiber termination and storage chamber.
3.
Secure the cables to the lace bar in the fiber termination and storage chamber according to AT&T standards.
