US 12,088,086 B2
Open neutral detector
Donald Paul Oldham, Jr., Trinity, FL (US); and Hamze Moussa, Palm Harbor, FL (US)
Assigned to Southwire Company, LLC, Carrollton, GA (US)
Filed by Southwire Company, LLC, Carrollton, GA (US)
Filed on Jun. 14, 2023, as Appl. No. 18/334,825.
Application 18/334,825 is a continuation of application No. 18/060,757, filed on Dec. 1, 2022, granted, now 11,769,999.
Application 18/060,757 is a continuation of application No. 17/711,582, filed on Apr. 1, 2022, granted, now 11,545,825, issued on Jan. 3, 2023.
Application 17/711,582 is a continuation of application No. 17/121,296, filed on Dec. 14, 2020, granted, now 11,322,929, issued on May 3, 2022.
Application 17/121,296 is a continuation of application No. 15/836,481, filed on Dec. 8, 2017, granted, now 10,868,417, issued on Dec. 15, 2020.
Claims priority of provisional application 62/432,310, filed on Dec. 9, 2016.
Prior Publication US 2023/0327425 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02H 3/33 (2006.01); H02H 3/20 (2006.01); H02H 5/10 (2006.01)
CPC H02H 3/338 (2013.01) [H02H 3/20 (2013.01); H02H 5/10 (2013.01); H02H 5/105 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for detecting an open neutral condition in a split phase power system for delivering power to an electrical distribution system of a Recreational Vehicle, the apparatus comprising:
a first powered line configured to output electricity to the electrical distribution system;
a second powered line configured to output electricity to the electrical distribution system;
a shared neutral line configured to provide a grounded neutral to the first and second powered lines;
an interrupter configured to selectively interrupt power supplied by the first and second powered lines; and
a controller configured for:
detecting when an open neutral condition is present in the split phase power system by determining instances when a power current is present on one or both of the first and second powered lines while a return current is not present on the neutral line; and
in response to detecting that the open neutral condition is present, causing the interrupter to interrupt the power supplied by the first and second powered lines.