Surge Protection Quick Installation Guide (General Cameras) Aug 10, 2021
Installation Guide
Surge protector installation guide ‣ 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. © 2021 VIVOTEK Inc. All rights reserved.
Surge protector installation guide (Cont.
Lightening rod ‣ 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 Lightening Rod Wire Ground Rod © 2021 VIVOTEK Inc. All rights reserved.
Surge protector ‣ 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. © 2021 VIVOTEK Inc. All rights reserved.
Bus bar ‣ 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. 666 mV (0,3V) D1 D2 D3 666 mV gap between 2 devices LOOP LOOP LOOP A1 A2 A3 © 2021 VIVOTEK Inc. All rights reserved.
Bus bar(Cont.) ‣ 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 Bus Bar Common Grounding D3 666 mV gap between 2 devices Bus Bar Common Grounding © 2021 VIVOTEK Inc. All rights reserved.
Grounding Rod ‣ 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 © 2021 VIVOTEK Inc. All rights reserved.
Good Installation Example
Surge Protection Grounding Wire in Cabinet This grounding wire should connect to Bus Bar © 2021 VIVOTEK Inc. All rights reserved.
Well organized within cabin © 2021 VIVOTEK Inc. All rights reserved.
All the devices are well grounded © 2021 VIVOTEK Inc. All rights reserved.
Bad Installation Example
Case 1 : PCBA burn with MTL surge protector (ZB24585) © 2021 VIVOTEK Inc. All rights reserved.
Case 2 : IP9191-HP PCBA burn (Cont.) Housing is not grounded and there no surge protector installed © 2021 VIVOTEK Inc. All rights reserved.
Information for Trouble Shooting
Information We Need 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 © 2021 VIVOTEK Inc. All rights reserved.
