Patent ID: 11923670
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. An arc detection device comprising:
a low-impedance circuit connected between a first node on first wiring and a second node on second wiring, the first wiring connecting a positive electrode of a direct-current power supply and a plurality of devices, extending from the positive electrode of the direct-current power supply, and branching toward the plurality of devices, the second wiring connecting a negative electrode of the direct-current power supply and the plurality of devices, extending from the negative electrode of the direct-current power supply, and branching toward the plurality of devices, the low-impedance circuit having impedance lower than impedance of each of the plurality of devices;
an electric current detector that detects an electric current flowing through the low-impedance circuit; and
an arc determiner that determines, based on the electric current detected by the electric current detector, whether an electric arc has occurred.