Thunder-Proof and Surge Protection 14
Thunder-Proof and Surge Protection
Appendix 1
Transient voltage suppressor (TVS) is applied to protect devices against voltage spikes and
overvoltage below 6000V. However, it is still necessary to take necessary safeguard measures
when installing the Camera in the outdoor environment according to your local electrical safety
regulations.
The distance between the signal transmission cable and high-voltage device (or
high-voltage cable) shall be at least 50 meters.
When laying cables outdoors, try to lay them under the eaves.
At open places, lay cables underground by hermetic steel tube, and then do equipotential
grounding to both ends of steel tubes. Laying overhead power cables is prohibited.
At places with severe thunderstorms and induced voltage (like substation), high-powered
lightning protection devices and lightning conductors are required.
When laying cables and connecting lightning protection devices, you must comply with
regional laws and regulations.
The grounding devices must have strong anti-interference ability and must comply with
electrical safety standards. Make sure that cable connections are correct; otherwise short
circuit and accidents may occur. When the electrical system is connected to the ground
cable, the impedance shall
not exceed 4Ω, and the cross-sectional area of the ground
cable shall not exceed 25 mm
2
.
For the installation of lightning protection devices of the outdoor PTZ, see Appendix figure 1-1.
Appendix figure 1-1 Install PTZ lightning protection devices (1)
