US 12,170,439 B2
Hybrid arc flash mitigation system
Xin Zhou, Wexford, PA (US); Brian E. Carlson, Gibsonia, PA (US); Brooke E. Lang, Pittsburgh, PA (US); and Robert P. Griffin, Bradfordwoods, PA (US)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on May 16, 2023, as Appl. No. 18/197,901.
Application 18/197,901 is a continuation of application No. 17/982,807, filed on Nov. 8, 2022, granted, now 11,715,945.
Application 17/982,807 is a continuation of application No. 17/070,464, filed on Oct. 14, 2020, granted, now 11,527,878, issued on Dec. 13, 2022.
Prior Publication US 2023/0283060 A1, Sep. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H02H 1/00 (2006.01); H01H 9/38 (2006.01); H01H 9/50 (2006.01); H02H 3/08 (2006.01); H01H 9/52 (2006.01)
CPC H02H 1/0023 (2013.01) [H01H 9/38 (2013.01); H01H 9/50 (2013.01); H02H 3/08 (2013.01); H01H 9/52 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
an arc flash sensor configured to detect an arc flash event; and
an arc flash mitigation device in communication with the arc flash sensor, the arc flash mitigation device comprising:
a path of least resistance having a path input and a path output, the path output being configured to serve as an input to a load, wherein the arc flash sensor is located downstream of the path output;
an actuator;
an electro-mechanical switch between the path input and the path output;
a bypass power switch device that comprises a solid-state circuit interrupter and that is configured to conduct current between the path input and the path output in response to an open-circuit condition of the electro-mechanical switch; and
a system controller configured to generate a trigger signal to activate the actuator to generate the open-circuit condition of the electro-mechanical switch, which causes the bypass power switch device to interrupt a fault current associated with a fault event, in response to detection of the arc flash event by the arc flash sensor.