Circuit interrupting device having printed circuit board coils
A circuit interrupter including a line conductor, a neutral conductor, a printed-circuit board coil, and a test circuit. The printed-circuit board coil has an aperture configured to receive the line conductor. The test circuit is electrically connected to the printed-circuit board coil. The test circuit is configured to determine an arc fault condition based on a signal of the printed-circuit board coil.
1. A circuit interrupter comprising:
a line conductor;
a neutral conductor;
a printed-circuit board coil embedded on a printed circuit board, the printed circuit board including a slot through the printed-circuit board coil, the slot configured to receive the line conductor;
a second printed-circuit board coil embedded on the printed circuit board, the printed circuit board further including a second slot through the second printed-circuit board coil, the second slot configured to receive the neutral conductor; and
a test circuit electrically connected to the printed-circuit board coils, the test circuit configured to determine an are fault condition based on a signal of the printed-circuit board coil.
2. The circuit interrupter of claim 1 , wherein the test circuit is configured to determine the are fault condition based on the signal of the first printed-circuit board coil and a second signal of the second printed-circuit board coil.
3. The circuit interrupter of claim 1 , wherein the test circuit determines the arc fault condition by: receiving the signal, performing a time-domain analysis on the signal, and determining the are fault condition based on the time-domain analysis.
4. The circuit interrupter of claim 1 , wherein the test circuit includes a bandpass filter configured to filter the signal.
5. The circuit interrupter of claim 1 , wherein the test circuit includes an integrator configured to determine a signal voltage proportional to a current of the signal.
6. The circuit interrupter of claim 1 , wherein the test circuit includes a gain stage configured to scale the signal.
7. The circuit interrupter of claim 1 , further comprising a second printed-circuit board coil electrically connected to the test circuit, the second printed-circuit board coil having a second aperture configured to receive the line conductor and the neutral conductor.
8. The circuit interrupter of claim 1 , wherein the test circuit is further configured to:
determine a ground fault based on one or more signals of the printed-circuit board coil.
9. The circuit interrupter of claim 1 , further comprising a second printed-circuit board coil having a second aperture configured to receive the neutral conductor, wherein the printed-circuit board coil and the second printed-circuit board coil are embedded on a printed circuit board.
10. The circuit interrupter of claim 1 , wherein the printed-circuit board coil is a Rogowski coil.
11. The circuit interrupter of claim 1 , wherein the printed-circuit board coil and the test circuit are located on the printed circuit board.