ALL-CAM2399-EP User Manual
© ALLNET GmbH Computersysteme 2015 – All rights reserved
Errors and omissions excepted
126
Appendix 3 Statics, Interference Lightning and Surge
Protection
This product adopts TVS plate lightning protection technology to avoid damage caused
by pulse signal that is below 3000V, like instantaneous lighting stroke, surging, etc.
According to the actual outdoor situation, necessary protection measures must be
taken, besides ensuring the electrical safety.
The distance between signal transmission wires and High-voltage equipment or
high-voltage cable is at least 50m.
Outdoor wiring should better be routed under eaves as much as possible.
In the open field, wiring should be buried underground in sealed steel pipe, and the
steel-pipe should be one-point grounding. Overhead routing method is forbidden.
In strong thunderstorm area or high induction voltage areas (such as high-voltage
transformer substation), high power lightning protection apparatus and lightning
conductor are necessary to be added.
The design of lightning protection and grounding of the outdoor devices and cables
should be considered together with the lightning protection demand of buildings. It
also must conform to the related national standards and industrial standards.
The system should be equipotential grounded. The grounding equipment must
conform to the demands of system anti-jamming and electrical safety both and it
must not appear short circuit or mixed circuit with the zero conductor of strong grid.
When the system is grounded alone, the resistance should be no more than 4Ω. The
sectional area of the grounding cable should be no less than 25mm2. For grounding
instructions, please refer to the Installation Manual of Speed Dome.
Figure A-1 Lightning & Surge Protection
