DoorKing 2112 Manual de instalação e do proprietário - Página 14
Procurar online ou descarregar pdf Manual de instalação e do proprietário para Sistemas de controlo DoorKing 2112. DoorKing 2112 18 páginas. Internet/cellular programmable video telephone/access control system
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2.2 Cellular OR Internet Connection
Optional External Cellular Module Kit
Optional Internal Cellular Module Kit
2.3 Grounding and Surge Suppression
Proper Grounding and the use of surge suppressors can significantly reduce the chance of component failure because of static charges or
surges. To be effective, ground connections should be made with a minimum 12 AWG wire to a ground point within 10 feet of the device
being protected. The ground point can be at an electrical panel, a metallic cold water pipe that runs in the earth or a grounding rod driven at
least 10 feet into the soil. A gooseneck mounting post anchored in concrete does NOT make a good ground.
Ground to existing electrical system.
Low Voltage Surge Suppressor
It is highly recommended that a low voltage surge
suppressor (DoorKing P/N 1878-010) be installed to help
protect the telephone entry system from power surges.
Surge suppressor must be positioned 3 ft or less from the
ground source, 12 AWG min.
10
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Some Acceptable Ground Sources
Ground
Wire
Ground to metallic cold water pipe.
Transformer
Cat5 Cable
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IMPORTANT:
safety protection for clarity. Make sure
ground wire is protected from being
touched or electrical shock could occur!
Ground
Wire
Grounding rod 10 feet in soil.
Surge suppressor
within 10 ft of 2112.
1878-010
POWER LINE
Surge suppressor within
3 ft of ground source.
B u
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V i d
H D
M I
Ground wire shown without
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
0 0
2112
2112-065-G-12-21
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