US 12,113,348 B2
End of line protection
Vahid Madani, Crockett, CA (US); Ronald E. Smith, Antioch, CA (US); Robert B. Stuart, San Tan Valley, AZ (US); Kenneth Hyung Choi, Santa Clara, CA (US); and Justin Dongjin Choi, Santa Clara, CA (US)
Assigned to Viking Sentinel Technology, LLC, Houston, TX (US)
Appl. No. 17/628,545
Filed by Virga Systems LLC, Cheyenne, WY (US)
PCT Filed Feb. 12, 2020, PCT No. PCT/US2020/017935
§ 371(c)(1), (2) Date Jan. 19, 2022,
PCT Pub. No. WO2020/167953, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/841,094, filed on Apr. 30, 2019.
Claims priority of provisional application 62/806,551, filed on Feb. 15, 2019.
Prior Publication US 2023/0318289 A1, Oct. 5, 2023
Int. Cl. H02H 3/00 (2006.01); G01R 19/25 (2006.01); H02H 3/027 (2006.01); H02H 3/16 (2006.01); H02H 3/26 (2006.01); H02H 11/00 (2006.01); H02J 3/00 (2006.01); H02J 13/00 (2006.01)
CPC H02H 11/00 (2013.01) [G01R 19/2513 (2013.01); H02H 3/027 (2013.01); H02H 3/16 (2013.01); H02H 3/26 (2013.01); H02J 3/001 (2020.01); H02J 13/00002 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A method for blocking a closure of an interrupting device, comprising:
providing a first resistor between a first phase and a second phase of a three-phase distribution network;
providing a second resistor between the second phase and a third phase of the three-phase network;
determining, via a continuity tester at an end of the network, an abnormal condition in the three-phase network based on an impedance measured between two of the phases; and
blocking, at least temporarily from closing, the interrupting device based on the determined condition.