US 12,235,330 B2
Method and system to determine electrical faults
Moshe Cohen Gadol, Rishon Lezion (IL)
Assigned to ESP LTD., Rishon Lezion (IL)
Appl. No. 18/012,949
Filed by Moshe Cohen Gadol, Rishon Lezion (IL)
PCT Filed Jun. 24, 2021, PCT No. PCT/IB2021/055620
§ 371(c)(1), (2) Date Dec. 26, 2022,
PCT Pub. No. WO2021/260624, PCT Pub. Date Dec. 30, 2021.
Claims priority of provisional application 63/043,144, filed on Jun. 24, 2020.
Prior Publication US 2023/0147123 A1, May 11, 2023
Int. Cl. G01R 31/55 (2020.01); G01R 19/165 (2006.01); G01R 31/327 (2006.01); G01R 31/52 (2020.01); G01R 31/54 (2020.01); G08B 21/18 (2006.01); H02H 7/22 (2006.01)
CPC G01R 31/55 (2020.01) [G01R 19/16571 (2013.01); G01R 19/1659 (2013.01); G01R 31/3277 (2013.01); G08B 21/185 (2013.01); H02H 7/22 (2013.01); G01R 31/52 (2020.01); G01R 31/54 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
sampling a voltage drop between an input point and an output point within a breaker box for at least one circuit;
detecting one said circuit with an increased voltage drop above a threshold value;
sampling an input current at an input point of the breaker box, said input point connected to a same phase as said increased voltage drop; and
when said input current increases and has a sufficiently similar phase angle and time synchronization as said increased voltage drop;
calculating a loaded resistance of said detected circuit by dividing said detected increased voltage drop by said increased current, and, generating an indication of the loaded resistance.