Section 3 Mechanical Installation & Lightning Protection
33 FT722 & FT742 (RS485) – FF & PM Sensors – User Manual
Figure 28 below shows examples of lightning interceptors and how they can be used to create a protection zone
around the sensor. It is recommended that the interceptor is made from an appropriate grade of aluminium or hot-
dipped galvanised steel. These materials help to ensure a long-term low impedance connection to ground.
The standards for Lightning Protection of Wind Turbines are described in IEC 61400-24. The installation
instructions in this manual should be sufficient to ensure that the lightning protection zone around the sensor will
achieve a lightning protection level of LPZ0B as described in the standard.
Figure 28: Ring and Rod interceptors
It is recommended that the installation is reviewed by an appropriate lightning design expert. Companies such
as GLPS (Global Lightning Protection Systems) can provide design advice.
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