720D datasheet(21/52 Pages) ARISTA

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Cabling the Switch

4.2.3

Connecting DC Power Supply to Power Source

This section describes connecting the DC power supply to the power source.

Important:

•

Wire size must comply with local and national requirements and electrical codes. Use only

copper wire.

Calibre doit respecter les exigences locales et nationales et les codes de l’électricité. Utiliser

seulement du fil de cuivre.

•

Apply the ground connection prior to installation and remove it after disconnecting the power.

Appliquer le motif connexion tout d’abord pendant l’installation et supprimer dernière lors du retrait

de puissance.

To connect a DC power supply to the power source, follow the steps below:

1. Remove the terminal cover to expose the connectors on the terminal block on the face.

2. Attach the appropriate lugs to the source DC wires.

Use DC cables with insulated crimp-on spade lugs or crimp-on ring connectors.

3. Connect the DC-input wires to the terminal block in this order:

a. Ground cable to the ground connector on the terminal block.

b. Negative (–) source DC cable to the negative (–) connector on the terminal block.

c. Positive (+) source DC cable to the positive (+) connector on the terminal block.

d. Torque the screws as specified in the following table.

Table 6: Wiring, Lug, and Tightening Torques for DC PSUs

Wire Size

Tightening Torque

AWG

mm2

Lug Type

N.m

lbs

14 to 18

1.5 to 0.75

ring

0.8

7.0

4. Replace the terminal cover.

4.3

Connecting Serial and Management Cables

This section describes the type of cables required to connect the device.

The accessory kit includes the following cables:

•

RJ-45 to DB-9 serial adapter cable

•

RJ-45 Ethernet cable

The following RJ-45 to DB-9 table lists the pin connections of the RJ-45 to DB-9 adapter cable.

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