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From Emerson Network Power - Surge Protection
IEEE Standard 1100-2006 (Emerald Book), Section 9.8.5.14 (p. 369) "When used with a well-regulated generator, SPDs provide a high level of protection for sensitive equipment. However, if the generator output voltage increases above the SPD maximum allowable limit, the varistors start to conduct mains current on each half-cycle of the supply and get very hot. This may cause the fuses to blow and possibly damage the SPD. If regulation is poor it may be necessary to use an SPD designed for a higher voltage supply, for example using a 480 V device on a nominal 415 V system." Products & Services
Power filters are electronic circuits designed to locate and eliminate surges, harmonic transient currents, spikes, and other unwanted signals in power distribution systems and electrical equipment such as computers, television sets, and other devices.
Learn more about Power Filters
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Topics of Interest
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The past two years have seen many changes in codes and standards of surge protective devices (SPDs). The specific standards are from Underwriters Laboratories (UL), and the National Fire Protection...
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