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411 Protective measure: automatic disconnection of supply

Last edit: 03/03/2023

Article 411, (equivalent to CEI 64/8-4 article 413), details the most used method to protect people from indirect contacts: Automatic Disconnection of Supply.

The way the method works depends on the type of neutral grounding system. There are 3 types of systems:

  • TN Systems
  • TT Systems
  • IT Systems

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