Hubbell Limited

A. B. Chance Company

Deborah L Harr

A door retainer mechanism on a padmounted switchgear cabinet includes a pair of elongated links coupled between an access door and housing of the cabinet. The links are pivotally connected respectively to the access door and housing and also pivotally connected to one another. The links are pivotable relative to each other between folded and unfolded conditions with respect to one another as the access door is moved between closed and opened positions relative to the cabinet housing. The links are operable automatically to latch with one another in the unfolded condition upon the access door reaching the opened position after being moved by a worker from the closed position relative to the cabinet housing. The links of the door retainer mechanism, once they have reached the unfolded condition and become latched with one another, function to retain the access door in the opened position and prevent the access door from returning to the closed position. The door retainer mechanism only allows the access door to return to the closed position after the links have been unlatched manually from one another by the worker and allowed to return to the folded condition with respect to one another. The door retainer mechanism also includes first and second stop elements mounted to a respective one of the first and second links and engageable with the respective other thereof so as to prevent the links from over-shooting the respective folded and unfolded conditions.

Door retainer mechanism for automatically retaining access door on

A fuse mounting bracket assembly for air-insulated, live front padmounted switchgear is provided that in a first configuration permits only one type of fuse to be selectively mounted in the bracket assembly and in a second configuration allows only a second different type of fuse to be selectively mounted in the bracket assembly. The bracket assembly includes a main frame having an end wall and two side walls with slots being provided in the side walls for pivotally receiving opposed, outwardly extending mounting protuberances on the selected one type of fuse. A pair of adapters may be selectively mounted on the frame assembly in blocking relationship to the slots and which present components that extend inwardly toward one another from respective side walls for engagement with a mounting hook on a second type of fuse, thus allowing the fuse mounting bracket assembly to be selectively configured for either of the two types of fuses with minimum overall parts requirements.

Fuse mounting bracket for live front padmounted switchgear

A load interrupter device is provided for live front padmounted high voltage switchgear unit wherein circuit interruption is independent of the speed at which a lineman opens the switch of the switchgear. The interrupter includes an insulating body having a fixed terminal and a moveable terminal spaced therefrom which forms a part of manually operable switch structure. A conductive element within the body connected to the moveable terminal normally engages the fixed terminal. A pair of moveable conductive members are also provided in the body, with one of the conductive members normally engaging a contact electrically connected to the first terminal, while the second member is joined to the second terminal for movement therewith. Spring mechanism interconnecting the two members and in association with a detent causes the first conductive member to be retained in engagement with its associated contact until after the conductive element clears the first terminal whereupon the first conducting member is then acceleratedly moved out of engagement with the first contact to break the circuit and create an arc which is rapidly suppressed by material making up a part of the interrupter body.

Load interrupting switch for live front padmounted switchgear

A motor operator connecting member for padmount switchgear is provided which includes a connector and a key shiftably mounted thereon. The motor operator connecting member is adapted for selectively operatively coupling or decoupling a linear actuator and a shaft operatively connected to the switch blade of the switchgear for moving the switch blade in and out of contact with the switch contacts. The key is manually manipulable between a first position coupling the connecting member and the shaft and a second position effectively decoupling the connecting member from the shaft whereby the shaft and connecting member are free to pivot relative to one another.

Growing community of inventors

Columbia, MO, United States of America

Deborah L Harr