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5 APPENDIXES
Lighting protection and Anti-surge
This product USES the gas discharge tube of TVS diode and protection circuit, can
effectively prevent the 3.0 kV following transient lightning and surge lamp all types of pulse
signal to the damage of equipment. But, for outdoor installation according to the actual situation
on the premise of guarantee the electrical safety to do the necessary protective measures:
Signal transmission line must be with the high voltage equipment goods between high voltage
cable to keep a distance of at least 50 meters
Choose as far as possible outside wiring along the roof line
For open field must adopt sealing pipe buried wiring way, and the steel pipe by one-point
earthing, absolutely forbidden by wiring overhead way
In strong thunderstorms or high induction voltage region (e.g., high voltage transformer
substation), must be taken to add extra high power lightning protection equipment and installation
of lightning rod and other measures
Lightning protection and grounding design of outdoor installation and wiring must be combined
with the construction of lightning protection requirements into consideration, and conform to the
requirements of relevant national standards and industry standards.
The system must be equipotential grounding. Grounding device must meet the system
anti-interference and electrical safety requirements, and shall not be short term or mixed with
strong power grid zero line. System separate grounding, grounding resistance is not greater than
4Ω.
