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Article | REF: D5172 V1

Protection against disturbances - Protective components: use

Authors: Michel GRACIET, Joseph PINEL

Publication date: August 10, 1998

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4. Lightning protection

As the problems of protecting distribution networks are dealt with elsewhere [12] , and the overall protection of buildings is ensured by earthing and potential equalization, we are only interested in the effects of lightning conducted or captured by internal circuits and exerted on equipment, whether domestic or industrial.

4.1 Required levels of protection

Based on numerous measurements [3] , it appears that the effects of lightning impulses or their coupling on circuits depend more on the impedance of the circuit than on its operating voltage. It should also be remembered that conductor spacing provides natural protection (acting...

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