US 12,437,949 B2
Vacuum interrupter with slow opening solenoid core inside to shorten the length of the conductor assembly
Jayaraman Muniyappan, Pernambut (IN); Robert Michael Slepian, Murrysville, PA (US); Santhosh Kumar Chamarajanagar Govinda Nayaka, Moon Township, PA (US); and Ganesh Kumar Balasubramanian, Horseheads, NY (US)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed by EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed on Jan. 5, 2023, as Appl. No. 18/093,387.
Prior Publication US 2024/0234064 A1, Jul. 11, 2024
Int. Cl. H01H 50/64 (2006.01); H01H 50/20 (2006.01); H01H 50/36 (2006.01); H01H 50/44 (2006.01); H01H 89/00 (2006.01)
CPC H01H 50/641 (2013.01) [H01H 50/20 (2013.01); H01H 50/36 (2013.01); H01H 50/44 (2013.01); H01H 89/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A solenoid actuator arrangement for actuating travel of a movable conductor of a vacuum circuit interrupter from a closed state to an open state, the movable conductor comprising a movable separable contact, the vacuum circuit interrupter including a vacuum housing fixed in position and positioned to contain the movable separable contact and a stationary separable contact, the solenoid actuator arrangement comprising:
an actuator seat, the actuator seat being fixed in position in the circuit interrupter and comprising:
a steel seat, the steel seat comprising:
an actuator seat central opening structured to receive the movable conductor and enable the movable conductor to travel in an opening direction; and
a trough structured to surround the movable conductor; and
a solenoid coil seated in the trough; and
an iron core, the iron core being structured to be fixedly coupled to the movable conductor within the vacuum housing of the vacuum circuit interrupter so as to laterally surround a portion of the movable conductor within the vacuum housing,
wherein the steel seat is structured to be magnetized when current is supplied to the solenoid coil,
wherein the iron core and the steel seat are structured to cause the steel seat to attract the iron core when the steel seat is magnetized, and
wherein the iron core and steel seat are structured to cause the movable conductor to separate from a stationary conductor of the circuit interrupter when the iron core is coupled to the movable conductor and when the steel seat is magnetized.