S. Schaffer

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  • S. Schaffer
  • Conference Record of the 1991 IEEE Industry…
  • 1991
The predominant engineering tool that allows the designer to evaluate short circuit protection levels is the current limiting effect chart. The author discusses the chart, and electrical system parameters than can affect the let-through values of current limiting fuses, and application considerations of how the let-through values are compared to the short(More)
  • S. Schaffer
  • Conference Record of the IEEE Industry…
  • 1989
In many industrial and commercial installations, electrical distribution systems can deliver short-circuit currents approaching 200000 A, RMS symmetrical. The overcurrent protective device must safely interrupt any overload or short circuit and protect the electrical components from damage and/or destruction. The factors involved in protecting molded-case(More)
Low-voltage fuse standards, and enclosure standards are reviewed. The component heat rise, overload capability, mechanical and electrical endurance, insulating base strength, dielectric strength, and short-circuit withstand capabilities of low-voltage enclosed switches are discussed. Specific test standards, enclosure types, and applications are also(More)
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