Data Assessment for Electrical Surge Protective Devices by Eddie Davis, Nick Kooiman, Kylash Viswanathan

By Eddie Davis, Nick Kooiman, Kylash Viswanathan

This short develops an information assortment plan to evaluate loss regarding electric surges in houses, and explores the aptitude influence units that hinder those surges can have in mitigating those losses. Key subject matters comparable to surge resources, surge results and home surge defense are truly outlined. contemporary hearth safeguard codes proposed a demand that each residing unit be geared up with a surge defense machine, as each year there's estate harm to electric and digital apparatus as a result of electric surges. those proposals haven't been carried out because of an absence of trustworthy facts, which this short seeks to alter. The authors review surge phenomena and their assets, surge safety equipment, surge defense concepts and criteria which will current a knowledge plan that could thoroughly examine loss with regards to electric surges in homes.

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Additional info for Data Assessment for Electrical Surge Protective Devices

Sample text

Cost tends to increase as the surge current rating increases because of the additional MOV modules that are required. The cost can be considerably higher for three-phase circuits, partly because there are more protection modes to consider compared to a single-phase application and partly because the surge current rating might be higher. 8 A surge current rating above 60 kA likely is adequate for virtually all lightning strokes. In lightning-prone areas (refer to Fig. 1), a higher surge current rating can also provide a longer SPD life if it is exposed to repeated surges.

This guide form the basis for IEEE surge testing criteria and is recommended for any review of surge characteristics. 1 is also valuable as a source of recorded data of surge events. Temporary overvoltages are also discussed, including their potential impact on SPDs. 2, Recommended Practice On Characterization Of Surges In LowVoltage (1000 V And Less) AC Power Circuits, presents recommendations for selecting surge waveforms, and the amplitudes of surge voltages and currents used to evaluate equipment immunity and performance of SPDs.

Given the scarcity of real data relating to surges and the effects of surges, the approach described below is recommended. 1 Purpose of Data to Be Obtained The purpose of the recommended data acquisition approach is to produce real data regarding damage and injuries caused by surges. This information is intended to assist the NFPA 70 code-making committees with additional technical data to support a decision to require or not require SPDs for the variety of electrical applications proposed in past NFPA 70 update cycles (refer to Sect.

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