Medidas preventivas para proteger contra danos causados por sobretensões (EN)

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Medidas preventivas para proteger contra danos causados por sobretensões (EN)

Publicado: 25 de setembro de 2016 · Categoria: Brochuras

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Lightning protection for electric systems and loads Protective measures to prevent damage caused by over-voltage Global lightning strikes Lightning strikes the Earth 100 times a second 4x 10x Up to 30,000C A A Up to storms occur around the world at any given moment 5,000 V V Up to 350,000 A 100x and hundreds of millions of Volts Lightning is not uniformly distributed across the Earth Much more lightning occurs over land because daily sunshine heats it up faster than the ocean. 0.1 0.4 More hot air leads to stronger convection, thunderstorms, and lightning. 1.4 More lightning occurs near the equator because warmer becauseiswarmer than the poles. 5 20 70 Lightning flashes (per km per year) Why are the damages to electronic apparatus increasing? The electronic devices are areincreasingly more and more sensitive Networks are becoming more complex Consumer electronics are used profusely in people's homes How and why does over-voltage affect the apparatus? What causes the majority of faults in electronic devices? Not known Fau lty o 6% Short circuits 6% 61% Over-voltage Over-voltage Ser iou s on i t ra e p LEVEL OF IMMUNITY e ag m da 12% Accidents Increasing dependency by Data Processing Systems WITHSTAND CAPACITY Level of Damage 20X MAX 15% 0X RATED Network system failures RATED VOLTAGE Why is it best to protect electronic equipment? The The economic economic damage damage caused caused by by over-voltage over-voltage comparable that caused byby theft ofof private property. is...