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A-200 Installation Manual
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Appendix
Appendix 1 Static, Interference Lightning and Surge Protection
This product adopts TVS plate lightning protection technology to avoid damage caused by pulse
signals below 3000W, like lightning strikes, surges, etc. Based on the actual outdoor situation,
necessary protection measures must be taken.

The distance between signal transmission wires and High-voltage equipment or high-voltage
cable is at least 50m.

Outdoor wiring should be routed under eaves as much as possible.

In open field, wiring should be buried underground in sealed steel pipe, and the steel-pipe
should be one-point grounded. Overhead routing method is forbidden.

In strong thunderstorm areas or high induction voltage areas (such as a high-voltage
transformer substations), 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 the building. It also must conform
to the related local and industrial standards.

The system should be equipotential grounded. The grounding equipment must conform to the
demands of both system anti-jamming and electrical safety and it must not be short circuited 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
Grounding for Cement Pole/Wall Installation: