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1080p AHD 18x Optical Zoom External 360° PTZ Camera with Wall Bracket
4.3 Lightning and Surge Protection
When placing outside, you need to consider lightning and surge protection.
To guarantee electrical safety, we can take following measures:
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At least keep 50m distance between signal transmission line and high voltage
equipment or high voltage cable.
Outdoor wiring under the eaves.
For open field, use a seal steel pipe buried wiring way, and use one-point earthing with
the steel pipe. Do not use aerial wiring.
It needs to add extra high-frequency thunder-proof device and lightning rod in strong
thunderstorms area or high inductive voltage region (such as high voltage substation).
Thunder-proof and grounding design of exterior installation and circuit must be in
accordance with building lightning proof requirements. It must meet national standard
and industry standard.
System must be equipotential grounding. Grounding device must meet anti-jamming
and electric safety dual requirements. The connection with strong electrified wire
netting can't be short connection or mixed connection. When system is in the
condition of single-phase grounding, ground impedance is less than 4Ω, ground wire
cross-section area must be more than 25 mm2.
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