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Gigabit L2 Managed Switch
Lightning Protection
12
Requirements for the distance between Ethernet cable and other pipelines are
■
shown in the table.
Other Pipelines
Down-conductor
PE
Service pipe
Compressed air pipe
Thermal pipe (not
wrapped)
Thermal pipe (wrapped)
Gas pipe
The two diagrams below demonstrate parallel net length and parallel-overlapping
net height.
Note: The above minimum net length/height is required when metal raceway is not
used. If any requirements cannot be met, you can add a steel tube or metal raceway
for shielding.
Requirements for the distance between Ethernet cable and high-power electric
■
devices are in following tables.
Cable
Pave Way
Parallel cabling
<2kVA
One is in the grounded metal raceway or metal pipe
powerline
The both are in the grounded metal raceway or metal pipe 10
Parallel cabling
2 to 5kVA
One is in the grounded metal raceway or metal pipe
powerline
The both are in the grounded metal raceway or metal pipe 80
Parallel cabling
>5kVA
One is in the grounded metal raceway or metal pipe
powerline
The both are in the grounded metal raceway or metal pipe 150
Device
Switch case
Transformer room
Elevator tower
Air-conditioner room
Ethernet Cable
Min Parallel Net
Min Parallel-overlapping Net
Length L (mm)
Height H (mm)
1000
300
50
20
150
20
150
20
500
500
300
300
300
20
Min Distance (m)
1.00
2.00
2.00
2.00
Min Parallel
Length (mm)
130
70
300
150
600
300
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