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For which of the following protection negative sequence currents is provided?

  • Protection from negative sequence currents is commonly provided for generators.
  • Negative sequence currents can cause overheating and mechanical stress on the rotor and stator windings of generators, which can ultimately lead to insulation failure, winding damage, or even catastrophic failure of the generator.

To protect against these effects, generators may be equipped with negative sequence protection relays that monitor the flow of negative sequence currents and trigger protective actions, such as tripping the generator breaker, to isolate the generator from the system and prevent damage.