How to prevent the lightning protection of the surveillance system

The monitoring system is transmitted from the surveillance camera distributed in the indoor and outdoor areas through video signals and control signals to the central control host for centralized monitoring. In order to prevent lightning induced overvoltage and overcurrent, strictly speaking, the monitoring system needs to install lightning protection equipment, whether it is indoor or outdoor monitoring. Under normal circumstances, the monitoring system needs to consider the following lightning protection factors:
1. Lightning protection of front-end equipment The front-end equipment mentioned here is mainly a camera installed outdoors. To prevent electromagnetic induction, the power cables and signal cables led to the camera along the rod should pass through the metal tube shield. The transmission distance of the signal line is long and the withstand voltage level is low. It is easy to induce lightning current and damage the equipment. In order to conduct the lightning current from the signal transmission line into the ground, the selection of the signal lightning arrester is particularly important. Suzhou Kejia NKP-TEL-4C Series II One-in-one, three-in-one lightning arresters are suitable for lightning protection of bolts and domes.
2. The transmission line of the lightning protection monitoring system of the transmission line is mainly the power line of the transmission signal line. The access point of the power line should be installed with the corresponding power lightning protection device. Suzhou Kejia NKP-DY series power supply lightning protection device can effectively prevent the camera from damaging the power line due to overvoltage surge.
3. Lightning protection of terminal equipment In the monitoring system, lightning protection in the monitoring room is the most important and should be carried out in various ways from direct lightning protection, lightning wave intrusion, equipotential bonding and surge protection. Because 80% of the lightning high voltage is invaded from the power line, in order to ensure the safety of the equipment, three levels of lightning protection should be set on the general power supply. In the video transmission line, signal control line, intruder alarm signal line before entering the front-end equipment or before entering the center console should be equipped with a corresponding lightning protection device.
The above is a brief introduction of Xiao Bian's “Lightning Protection System for Surveillance System”. For more information about lightning protection and lightning protection products, please search Baidu (Kejia Lightning Protection).

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