DELTA GROUP VIVOTEK User manual

Surge Protection
Quick Installation Guide
(General Cameras)
Aug 10, 2021

Installation Guide

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Surge protector installation guide
3
‣Right picture it the recommended topology of surge protector solutions, it contains lightning rod,
surge protector, bus bar and grounding rod.
‣For the correct installation of lighting rod and surge protector, please contact the manufacture.

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Indoor Main Building
Network Equipment
Surge Protector
Grounding wire for Surge Protector
Camera ground connected to building earth
ground
Surge protector (Indoor devices protection)
Lightening Rod
Lightening Rod Grounding Electrode
Camera ground connected to surge protector
Grounding wire for lighting Rod
Surge protector
Bus Bar for ground connections
Outdoor rated HPoE compatible midspan
Equipment Grounding Electrode
Equipment enclosure
Surge protector installation guide (Cont.)
Grounding wire for camera
Grounding wire for Surge Protector
Grounding wire for camera

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Lightening rod
5
‣Lightning rod should be installed in the highest point of the structure.
‣Lightning rod need to have independent grounding. DO NOT use the same grounding as devices
Wire
Lightening Rod
Ground Rod

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Surge protector
6
‣Every devices should installed with a surge protector.
‣The distance between camera and surge protector should be less than 1m.
‣Every surge protectors need to connect to grounding point.

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Bus bar
7
‣In this scenario, these three devices (D1, D2 and D3) are connect together (with a ethernet cable
for example) and are grounded to 3 points (A1, A2 and A3).
‣Because these devices are connect to separate ground point, so they have voltage difference and
this might causing the Ground Loop occurred.
LOOPLOOP
D1 D2 D3
A1 A2 A3
666 mV gap between 2 devices
LOOP
666 mV (0,3V)

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Bus bar(Cont.)
8
‣If all the devices connect to one command point (bus bar) instead of connect to ground
separately, there’s no voltage difference between them.
‣The current will not pass through the ethernet cable between devices and causing loop.
D1 D2 D3
Common Grounding
666 mV gap between 2 devices
Bus Bar
Common Grounding
Bus Bar

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Grounding Rod
9
‣Grounding Rod needs to have good electrical conductivity, usually we use copper ground rod
because it is cheaper and have good electrical conductivity.
‣Ground Rod resistance value needs to be less than the electrical device. Different country have
different specification, usually it is recommended to be less than 10ohm.
Grounding Resistance Tester
10 ohm

Good Installation
Example

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Surge Protection Grounding Wire in Cabinet
This grounding wire should
connect to Bus Bar

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Well organized within cabin

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All the devices are well grounded

Bad Installation
Example

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Case 1 : PCBA burn with MTL surge protector (ZB24585)

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Case 2 : IP9191-HP PCBA burn (Cont.)
Housing is not grounded and there no surge protector installed

Information for
Trouble Shooting

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Information We Need
18
Device Information
‣Camera (enclosure)
‣Switch
‣Surge protector
‣Other used devices
Structure diagram
‣Installed location –outdoor
or indoor
‣Distance between camera
and surge protector
Screenshots
‣Installed devices
‣Cable connecting point
‣Each device’s grounding
point