Device and method for protection from an electric arc

摘要

A device for protection against an electric arc in an electric installation comprising: at least one detection apparatus of the electric arc, at least one short-circuiter establishing a short-circuit for extinction of the electric arc, an electronic control unit of the short-circuiter commanding to an established state of said short-circuit in case of detection of the electric arc by the detection apparatus, and a switchgear apparatus for interrupting said short-circuit at the end of a predefined short-circuit time delay as from the time this short-circuit is established.

主权项

1. A protection device against an electric arc in an electric installation, comprising:
at least one detector configured to detect said electric arc, a first short-circuiter configured to establish a first short-circuit for extinction of said electric arc when the at least one detector performs an initial detection of said electric arc, a switchgear apparatus configured to interrupt said first short-circuit at the end of a first time delay running from establishment of said first short-circuit by the first short-circuiter, a circuit breaker configured to electrically isolate said electric installation from an electric power source of said electric installation when the at least one detector detects said electric arc after a second time delay running from initial detection of said electric arc, the second time delay being longer than the first time delay.