William F. Hoenigmann

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Metal oxide arresters are ideal for the protection of rotating machines against overvoltages. The absence of gaps, required in older silicon carbide arresters, results in more consistent operation and improved protection for fast-front surges. Also, the absence of gaps permits tailoring lower voltage arrester ratings to match the application of rotating(More)
AC motors require surge protection. However, rotating machinery arresters and capacitors are not required on the terminals of all ac motors. Often the distribution system parameters provide inherent surge protection. A simplified method is provided for determining when additional surge protection equipment is required at motor terminals.
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