Daktronics AF-3165-34-RGB Manuel d'utilisateur télécharger pdf (Page 27)

Electrical Installation

3-7

3.6 Power

Reference Drawings:

Power Specs, 8x48-48X144 Display RGB...................Dra

wing A-179873

Power Requirements

Refer to Drawing A-179873 for voltage and current requirements for your display

size. Each uses a 120VAC or 120/240 VAC single-phase power source. Depending

on the display size the number of power supplies may vary.

Do not connect the displays to any voltage other than that listed on the

Daktr

onics product label.

Proper power installation is imperative for proper display operation. The following

b-sections give details of display power installation.

Grounding

This sign is intended to be installed in accordance with the requirements of

Article 600 of the National Electrical Code and/or other applicable local codes.

This includes proper grounding and bonding of the sign.

Displays mu

st be grounded according to the provisions outlined in Article 250 of the

National Electrical Code

. Daktronics requires a resistance to ground of 10 ohms or

less.

The display system must b

e connected to earth-ground. Proper grounding is

necessary for reliable equipment operation. It also protects the equipment from

damaging electrical disturbances and lightning. The display must be properly

grounded or the warranty will be void.

The material of an earth-ground electrode differs from region to region and from

nditions present at the site. Consult the National Electrical Code and any local

electrical codes that may apply. The support structure of the display cannot be used

as an earth-ground electrode. The support is generally embedded in concrete, and if

in earth, the steel is either primed or it corrodes, making it a poor ground.

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Daktronics AF-3165-34-RGB Manuel d'utilisateur Page 27