Daktronics DAKT-0204-02, Руководство пользователя

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Electrical Installation 9
3.5 Display Power
Reference Drawings:
Power Entrance; Field Termination Detail ...................................................................... Drawing B-1128366
System Riser Diagram ...................................................................................................... Contract Specific
All display grounding, power routing, and termination must meet or exceed local codes and standards.
Correct power installation is imperative for display operation. These subsections give details on display
power installation. Only qualified individuals should attempt the electrical installation; untrained personnel
should not attempt to install the displays or any of the electrical components. Improper installation could
result in serious equipment damage and could be hazardous to personnel.
Refer to contract-specific documentation to determine who is responsible for providing conduit and pulling
cable through the conduit.
Grounding
The display must be properly grounded according to the National Electric Code
®
(NEC
®
) and any other local
or national codes, or the warranty will be null and void.
The display system must have proper earth-ground connection. Proper grounding is necessary for reliable
equipment operation, as it protects the equipment from destructive electrical disturbances and lightning.
The material of an earth-ground electrode differs from region to region and varies with conditions present
at the site. Consult local grounding codes. Daktronics does not recommend using the support structure
as an earth-ground electrode; concrete, primer, corrosion, and other factors make the support structure
a poor ground.
Note: The support structure may be used as an earth-ground electrode if designed to do so. A qualified
inspector must approve the support structure and grounding methods.
Power Installation
1. Connect the grounding electrode cable
at the ground bar attached to the term
panel or on ground lug located behind the
display's base cover.
2. Use a disconnect that opens all
ungrounded phase conductors.
The DSF-600 series display uses this power
entrance to terminate power. Refer to
Figure 13
and Power Entrance, Field Termination Detail
Drawing B-1128366
in
Appendix A
for
installation details.
Main Disconnect
Refer to contract specific system riser diagram
to determine who must supply a fused main distribution/disconnect and the necessary wiring for power
distribution to multiple display termination panels.
Figure 13: Power Entrance