Chapter 4: Cabling the Modular Switch
Cabling the AC Power Supply
Quick Start Guide: 7500N Series Modular Switches
27
Important!
Secondary Grounding wires, lugs and screws (M4 x 0.7) are not supplied.
Secondaire à la terre, câbles, cosses et vis (M4 x 0.7) ne sont pas fournis.
Secondary ground locations on the switches are displayed in
Power down the switch:
Remove all power cords from the power inlets.
4.3
Cabling the AC Power Supply
displays the rear panel location of power supplies and fabric modules.
The switch uses power cables with IEC-320 C-19 plugs. The accessory kit provides IEC-320 C-19 to
C-20 power cables, each two meters long.To insert a power cable, plug the power cables into the inlet.
4.4
Cabling the DC Power Supply
Note
The -48V and Battery-Return leads are a pair and should run adjacent to each other and be
approximately the same length.
Le - 48V et câbles de batterie-retour sont une paire courir à côté de l'autre et doivent être à peu près
la même longueur.
4.4.1
DC Power Supplies
The 7500N Series chassis supports two DC power supplies.
•
•
DC Power Adapter Installation for PWR-2700-DC-R
4.4.2
Wire and Lug Preparation
Before performing any installation actions, ensure power is removed from DC circuits by turning off the
power line servicing the circuits. Prepare the stranded wiring before you begin a DC power installation.
Step 1
Stranded copper wiring is required.
•
Commercially available 2 to 4 AWG wire is recommended for installations in the U.S.
•
Wire size should meet local and national installation requirements.
•
Grounding wires and grounding lugs are not supplied.
•
Strip the wires to the appropriate length for the lugs.
The wires connecting the DC power supply to the power source must meet the following requirements:
•
DC Input Wire Size: 2 – 4 AWG (33.6 mm
2
to 21.2 mm
2
).
•
Primary Ground Wire Size: 2 – 4 AWG (33.6 mm
2
to 21.2 mm
2
) per power supply.
•
The conductors are copper.
