Quick Start Guide

14
Lightning and Surge Protection Appendix 1
This series camera adopts TVS lightning protection technology. It can effectively prevent
damages from various pulse signals below 6000V, such as sudden lightning and surge. While
maintaining your local electrical safety code, you still need to take necessary precaution
measures when installing the Camera in the outdoor environment.
 The distance between the signal transmission cable and high-voltage device (or
high-voltage cable) shall be at least 50 meters.
 Outdoor cable layout shall go under the penthouse if possible.
 For vast land, use sealing steel tube under the land to implement cable layout and
connects one end to the earth. Open floor cable layout is forbidden.
 If there is no ground wire on the tower, connect the Camera’s ground wire into the ground.
Ground wire resistance shall be less than 4Ω.
 In area of strong thunderstorm hit or near high sensitive voltage (such as near high-voltage
transformer substation), install additional high-power thunder protection device or lightning
rod.
 The thunder protection and grounding of the outdoor device and cable shall be considered
and conform to your local national or industry standard.
 System shall adopt equal-potential wiring. The earth device shall meet anti-jamming and at
the same time conforms to your local electrical safety code. The earth device shall not be
connected to N (neutral) line of high voltage power grid or mixed with other wires. When
you connect the system to the earth alone, the earth resistance shall not be more than 4Ω
and earth cable cross-sectional area shall be no less than 25 mm². See Appendix figure
1-1.
Appendix figure 1-1 Lightning protection
Appendix table 1-1 Components for lightning protection
No.
Name
No.
Name
No.
Name
1
Video lightning rod
2
Communication lightning rod
3
Power lightning rod
4
Steel tube shield
5
Ground wire
6
Lightning rod