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  5. Internal transients in arc furnace power supplies

Article | REF: D5920 V1

Arc furnaces

Author: Maurice KRATZ

Publication date: February 10, 1999

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5. Internal transients in arc furnace power supplies

5.1 Power surges

Arc furnace power supplies are subject to overvoltages of varying magnitude, which can cause major damage to the electrical installation and therefore require special attention. What's more, in certain particularly unfavorable configurations, these overvoltages can propagate within the plant network and cause damage to ancillary installations.

  • In these installations, a distinction is made between internal and external power surges.

  • Surges of internal origin depend on the factory network and its components. These include, in particular:

    • switching overvoltages ;

    • overvoltages due to ferroresonance...

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