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US 11,313,907 B2Granted
Arc discharge detection device
AssigneeOMRON Corporation
InventorsKatsuya Marumo, Yasushi Kawashima, Hajime Umeki, Junji Obata, Keisuke Yano
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AssigneeOMRON Corporation
InventorsKatsuya Marumo, Yasushi Kawashima, Hajime Umeki, Junji Obata, Keisuke Yano
Estimating the term…
A control panel includes power supply circuits for supplying power supply voltages to loads and a connection part for connecting wiring. The control panel comprises a system current detection unit that is for detecting a sudden increase in system current that is from a power system and flows through the control panel and includes a second current transformer, and individual current detection units that are for detecting a sudden increase in the individual current of one of the power supply circuits and include first current transformers. An arc discharge detection unit identifies an arc discharge occurring within the control panel separately from a surge flowing into the system based on a system current detection signal and individual current detection signals.
An arc discharge detection device that is a device detecting an arc discharge occurring in a control panel connected between a power system and a load, the control panel having a power supply circuit supplying a power supply voltage to the load and a connection part for connecting wiring, the arc discharge detection device comprising:
An arc discharge detection device that is a device detecting an arc discharge occurring in a control panel connected between a power system and a load, the control panel having a power supply circuit supplying a power supply voltage to the load and a connection part for connecting wiring, the arc discharge detection device comprising:
Dependencies are inferred from the claim text.