XtendLan SDOMEOIR6-CM10, User Manual

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19
Appendix
Ⅰ
Anti-lightning, Anti-surges
This product is extremely air discharge and lightning protection with TVS tube technology,
which can effectively prevent the transient lightning below voltage 6000V, surge and damages
caused by other types of pulse signals.
However, necessary protective measures should be made in the premise of ensuring
electrical safety for outdoor installation according to the actual situation :
·Signal transmission line must be at least 50 meters far away from the high-voltage
equipment or high voltage cable.
· Try to choose outdoor wiring laid down along the roof line.
· Way of sealed steel pipe buried wiring is used in the area which opened, and steel pipe
units grounded in one point. Overhead wiring is absolutely prohibited.
· In the strong thunderstorms area or areas with high induced voltage (such as high voltage
substations), measure of installation of additional high power lightning protection equipment
and lightning rod must be taken.
· Lightning protection and grounding of outdoor devices and lines must take the
lightning-protection requirements of buildings into consideration, and comply with the related
national standards and industry standards.
· System must be
equipotential grounding . Grounding device must meet dual requirements
of anti-interference and electrical safety, and should not be shorted or mixed with the adjacent
lines in the strong power grid. When system is independently grounded, grounding impedance
should be less than 4
Ω, and cross-sectional area of grounding conductor must be not less than
25mm
2
.
Fig 25
Appendix
Ⅱ
Clean Transparent Cover
In order to assure a clear image of dome, the under cover of dome should be cleaned regularly.
● Be careful when cleaning and hold the outer ring of under cover by hands to avoid directly
touching with it. Because the acid sweat of finger membrane may corrode the surface coating
of under cover. Hard tool scratching the under cover may lead to blurring the images of dome
so that affecting image quality.