Installation Guide

Table Of Contents
4-1
4 Lightning Protection and Grounding
IP cameras are generally installed outdoors, which is why lightning protection is of great importance.
When the camera is installed in extreme environment, you should take related lightning protection
measures. This chapter introduces how to perform lightning protection measures for a camera
mounted outdoors by installing a protection box, grounding the device properly.
Outdoor Protection Box
Equip a protection box for the camera mounted outside to protect the camera from rain, dust, high
temperature, vibration and corrosive substance.
If there is no protection box supplied, you can put the camera into a protection box.
The requirements are as follows:
Protection box can be metal or plastic, the metal ones are more protective than plastic ones.
Use the protection box ranked IP66 (or higher) to keep away from water or dust.
Do not the stack devices in one protection box and make sure that leave about 5cm space
around camera for heat dissipation.
Use a grounding connector to connect all the grounding cables properly.
Use protection boxes with temperature regulators (inner heater or fan) in extreme
environment.
Attach the lens to the window on the protection box closely when installing the box to keep the
reflected light from entering the lens.
Lightning Protection
Lightning protection measures are shown as follows:
Place the camera in the protection area of discharging rod, see External Protection for more
information.
Data shows that more than 80% lightning problems in monitoring system are caused by the over
voltage induced by the lightning. Lightning protection for cable plays an imperative role in the
system protection. See Cable Protection for more information about cable protection.
Install proper arrestors in the device to prevent the lightning from attacking the device. For
example, you need to install arrestors for power cable, video cable and control cable. See Inner
Protection for more information.
External Protection
Install the discharging rod to protect the device from lightning.