| 摘要 |
A power distribution system includes a first circuit protection device and a second circuit protection device coupled to the first circuit protection device downstream of the first circuit protection device. The second circuit protection device includes a trip mechanism configured to interrupt a current flowing through the second circuit protection device, and a trip unit operatively coupled to the trip mechanism. The trip mechanism is configured to determine, for the second circuit protection device, a protective threshold, a blocking threshold that is lower than the protective threshold, and a backup threshold that is higher than the protective threshold, activate the trip mechanism based on a determination that the current flowing through the second circuit protection device exceeds the protective threshold, and transmit a first blocking signal to the first circuit protection device upon a determination that the current exceeds the blocking threshold. |
