Camera systems represent to common safety and monitoring equipment, They are used in various areas of application, in particular when it comes to protecting important objects (nuclear power plants, airports, prisons, military installations, monitoring of state boundaries, …), but also when monitoring of common areas (such as industrial premises, parking spaces, motorway toll stations, train stations, sports arenas and many other premises is to be done.
The systems contain sensitive and often expensive electronic components, interconnected via cabling, the latter serving for power supply and picture or data transmission between end sensors and the control system. Each such an installation is exposed to the effects of galvanic or electromagnetic pulses caused by lightning strike or switching processes arising in various technological equipment. Overvoltage impulses result in increased stresses or even destruction of electronic circuits of both the camera system and other electrical equipment, significant reduction of their life cycle and reliability. A much more damaging effect, however, may be caused by loss or inaccessibility of important data provided by the system. It is therefore recommended to protect these from overvoltages by using various types of surge protection devices, in order to limit the overvoltage effects to a minimum and ensure an error-free operation of the camera systems.
