Lightning strikes are an unpredictable natural phenomenon. However the way equipment can be protected from lightning strikes is predictable.
The 'Novaris Systematic Approach' is a step-by-step solution to lightning and surge protection that can be applied to any application, via the following steps:
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A boundary may cover an entire building, in the case of a small telecommunications installation or remote telemetry site, it may cover a single floor of a multistorey building, a single room or even a single piece of equipment.
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Novaris recommends the Modified Rolling Sphere Analysis as providing the best method of assessing lightning strike points.
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For effective lightning protection it is not necessarily the absolute value of earth resistance that is important, rather the way the earthing system is installed and how it is connected to the structure and the equipment to be protected.
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Modern control technologies such as PLCs, computers and power electronics are very susceptible to minor disturbances and fluctuations of the electricity supply.
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Modern digital switching systems such as those found on telephone networks are highly susceptible to transient voltage disturbances and old techniques for protecting this type of circuitry are no longer valid.
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