Transcription of Lightning and surge protection - basic principles
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Lightning and surgeprotection - basic principles October 2016AN904-1002 Rev IApplication noteMTL surge protectionCONTENTS ..Page1 INTRODUCTION ..1 The need for surge protection ..1 surge protection devices (SPDs) ..12 Lightning ..2 Introduction ..2 Generation of atmospheric discharges ..2 Lightning conductors and buildings ..2 Lightning -induced transients ..3 Transient specifications ..33 surge protection COMPONENTS ..4 Introduction ..4 Arc or carbon spark gaps ..4 Gas discharge tubes ..4 Zener diodes.
Lightning discharges rarely consist of one stroke only, although the human eye ‘runs together’ multiple strokes into one persistent image. The process be-gins with a stepped leader discharge making its way to ground via pockets of charge in the atmosphere, giving rise to the typical strongly branched appear - ance.
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