Transcription of Voltage Surge Immunity Rev 9.ppt - IEEE Power …
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Voltage Surge Immunity Rev 9.ppt - IEEE Power …
IEEE Power Electronics Society Denver Chapter Meeting September 18, 2007. Introduction to Voltage Surge Immunity Testing By Douglas E. Powell and Bryce Hesterman Better technology. Better Results SLIDE # 2. Voltage Surges Transient overvoltages on the ac Power system are produced by events such as load switching, capacitor bank switching, equipment faults and lightning discharges The ability of equipment to withstand Voltage surges can have a tremendous impact on field reliability Photo credits left to right 1 & 2: Microsoft Word clip art 3: SLIDE # 3. The Nature of Transient Overvoltages Transient overvoltage events are usually of short duration, from several microseconds to a few milliseconds Waveforms can be oscillatory or non-oscillatory (impulsive).
Transient Overvoltage Immunity Testing • US standard: ANSI/IEEE C62.41-1991, IEEE recommended practice on surge voltages in low-voltage ac pow er circuits ...
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