Cabling the Switch

Figure 4-3: DC Power Supply (PWR-721-DC-RED)

1

Power supply status LED

4

Battery return (RTN)

7

Plastic cover

2

-48V

5

Protective earth

3

Release

6

Handle

Note:

A disconnect device must be provided as part of the installation.

Assure power is removed from DC circuits before performing any installation actions. Locate the

disconnect device, circuit breakers, or fuses on DC power lines servicing the circuits. Turn off the

power line circuits or remove the fuses.

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

wire.

Apply ground connection to the switch first during installation and remove last when removing power.

Un dispositif de sectionnement doit être fourni dans le cadre de l'installation.

Pouvoir assurer qu'il est retiré de circuits DC avant d'effectuer des actions d'installation . Localiser

les disjoncteurs ou des fusibles sur les lignes de courant continu desservant les circuits. Coupez les

circuits de lignes d'alimentation ou retirer les fusibles.

Le calibre du fil doit être conforme aux exigences locales et nationales et les codes électriques.

Utiliser du fil de cuivre.

Appliquer connexion à la terre à l'interrupteur premier lors de l'installation et de supprimer la dernière

alimentation lors du débranchement.

4.2.2.1

Wire and Lug Preparation

Before installing, remove power from DC circuits by turning off the power line servicing the circuits. Prepare

the stranded wiring before you begin a DC power installation.

Note: Stranded copper wiring is required and should meet local and national installation

requirements. Wires and grounding lugs are not supplied.

1. Attach an ESD grounding strap.

2. Prepare the stranded copper wiring for the power supply to be used. Table 6: Wiring, Lug, and Tightening

Torques for DC PSU provide wiring, lug, and tightening torque information for the power supplies covered

in this guide.

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