28
Operation Humidity
0%
～
90% (without condensation)
Supplied Power
24V
～
AC 2A 60Hz/50Hz
Power consumption
3.6W
Weight 230G
Dimensions
55.3 X57.5 X 81.8mm
¤
Design and specifications are subject to change without notice.
Lightning arresters and Surge Suppressors
The product adopts TVS lightning proof technology to prevent from damage by lightning strike below 1500 W and impulse
signals such as surge, but it is also necessary to abide by the following precautions to ensure electrical safety based on
practical circumstances:
z
Keep the communication cables at least 50 meters away from high voltage equipment or cables.
z
Make outdoor cable laying-out under eaves as possible as you can.
z
In open area shield cables in steel tube and conduct a single point ground to the tube. Trolley wire is forbidden in such
circumstances.
z
In strong thunderstorm or high faradic zone (such as high voltage transformer substation), extra strong lightning
arresters equipment must be installed.
z
Take the building lightning proof requirements into account to design the lightning arrestors and grounding of outdoor
equipment and cable laying-out in accordance with the national and industrial standards.
z
The system must be grounded with equal potentials. The earth ground connection must satisfy the anti-interference and
electrical safety requirements and must not short circuit with high voltage electricity net. When the system is grounded
separately, the resistance of down conductor should be
≤
4
Ω
and the sectional area of down conductor should be
≤
25mm2.
The resistance of
down conductor
should be
≤
4
Ω
Shield Steel tube
Power cable
lighting conductor
Communication
cable lightning conductor
Video cable
lightning conductor
Lightning rod
45
The dome must be
installed within the
45° angle area under
the lightning rod with
the vertical line as the
blsector.
Summary of Contents for VSD-261P
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