摘要:
A support structure for a circuit interrupter latch member includes a first side plate having a first opening, and a second side plate having a second opening. A first hardened bushing includes a first opening and a first perimeter. The first opening of the first hardened bushing is adapted to pivotally mount a first tab of the latch member. The first perimeter is coupled to the first side plate at the first opening thereof. A second hardened bushing includes a second opening and a second perimeter. The second opening of the second hardened bushing is adapted to pivotally mount a second tab of the latch member. The second perimeter is coupled to the second side plate at the second opening thereof. The hardened material of the first and second side plates is harder than the unhardened material of the first and second side plates.
摘要:
A circuit breaker includes a housing and an operating mechanism having a cross bar supported by a first housing surface and moving in an arcuate path between open/tripped and closed positions, a pivotally mounted cradle including a latch, and pivotally mounted primary and secondary latches. The primary latch includes a pivot, an opening and a free end. The cradle latch rests within the opening when the contacts are not tripped open. The secondary latch includes a pivot and a surface. The latches are between a second housing surface and the cross bar in a first position. The cross bar is offset from the latches in a second position. The secondary latch surface and pivot are between the second housing surface and the primary latch pivot. The secondary latch surface engages the primary latch free end when the contacts are not tripped open and maintain the cradle latch within the opening.
摘要:
A spring assembly is provided for a yoke assembly of an electrical switching apparatus including a housing, separable contacts enclosed by the housing, and an operating mechanism structured to open and close the separable contacts. The operating mechanism includes a pole shaft. The yoke assembly is coupled to the pole shaft and is movable among first and second positions corresponding to the separable contacts being closed and open, respectively. The spring assembly includes a number of first springs having a first spring rate and being coupled to the yoke assembly, and a number of second springs having a second spring rate and being coupled to the yoke assembly. The second spring rate is different than the first spring rate. The number of first springs and the number of second springs bias the yoke assembly toward the second position.
摘要:
A spring assembly is provided for a yoke assembly of an electrical switching apparatus including a housing, separable contacts enclosed by the housing, and an operating mechanism structured to open and close the separable contacts. The operating mechanism includes a pole shaft. The yoke assembly is coupled to the pole shaft and is movable among first and second positions corresponding to the separable contacts being closed and open, respectively. The spring assembly includes a number of first springs having a first spring rate and being coupled to the yoke assembly, and a number of second springs having a second spring rate and being coupled to the yoke assembly. The second spring rate is different than the first spring rate. The number of first springs and the number of second springs bias the yoke assembly toward the second position.
摘要:
The closing protection mechanism provided herein includes a control unit, a sensing switch and a sensing switch actuator. The control unit is coupled to, and in electronic communication with, the trip device. The control unit is structured to receive a sensing switch signal and to provide a control signal to the trip device. The sensing switch coupled to, and in electronic communication with, the control unit. The sensing switch is disposed adjacent to the toggle assembly. The sensing switch is structured to provide a sensing switch signal to the control unit. The sensing switch actuator is disposed on the toggle assembly. The sensing switch actuator is structured to actuate the sensing switch. The sensing switch is structured to be actuated by the sensing switch actuator when the toggle assembly is in the second, over-toggle configuration.
摘要:
The stored energy device interlock assembly provided is structured to prevent the closing assembly and/or the latch assembly from being actuated in selected configurations. The interlock assembly includes a latch D-shaft link assembly, an on-command paddle assembly, and an on-command paddle actuator. The latch D-shaft link assembly is pivotally coupled to, and structured to rotate, the latch assembly D-shaft. The on-command paddle assembly is structured to move the D-shaft link assembly. The on-command paddle actuator is structured to move the on-command paddle assembly. The interlock assembly is structured to disengage the latch assembly D-shaft from the on-command paddle assembly in selected configurations of the electrical switching apparatus. The interlock assembly provided herein has two pivotal degrees of freedom as opposed to a pivotal degree of freedom and a sliding degree of freedom.
摘要:
The present invention provides for an electrical switching apparatus operating mechanism opening assembly wherein the toggle assembly stop/kicker pin has been separated into a kicker pin and a stop pin. By separating the functions of the stop/kicker pin into separate pins, the kicker pin may now be located at the pivot point of the associated link. Further, the kicker pin and the stop pin are now disposed upon a cradle assembly as opposed to an elongated link. The cradle assembly further supports one of the toggle assembly links. Thus, rotation of the cradle assembly causes the toggle assembly to move. The operating mechanism opening assembly is configured so that, when an associated latch assembly latch plate assembly is released, the cradle assembly rotates so that the toggle assembly is moved away from a closing assembly closing device.
摘要:
A catchment mechanism for an electrical switching apparatus operating mechanism is provided. The catchment mechanism includes a catchment wheel with a radially extending surface, a catchment prop, and a catchment prop reset pin. The catchment wheel rotates with the cam in the closing assembly as the closing springs are being charged. During the charging of the springs, the catchment prop stop edge travels over, but preferably does not engage, the wheel outer surface. When the closing springs are released, the catchment prop stop edge engages the catchment wheel radially extending surface thus causing the catchment wheel to stop rotating. As the catchment wheel is fixed to the cam shaft, the rotation of the cam shaft, and therefore the cam, is also stopped. The catchment wheel radially extending surface is positioned so that the cam is stopped in an appropriate position to begin recharging the closing spring.
摘要:
A catchment mechanism for an electrical switching apparatus operating mechanism is provided. The catchment mechanism includes a catchment wheel with a radially extending surface, a catchment prop, and a catchment prop reset pin. The catchment wheel rotates with the cam in the closing assembly as the closing springs are being charged. During the charging of the springs, the catchment prop stop edge travels over, but preferably does not engage, the wheel outer surface. When the closing springs are released, the catchment prop stop edge engages the catchment wheel radially extending surface thus causing the catchment wheel to stop rotating. As the catchment wheel is fixed to the cam shaft, the rotation of the cam shaft, and therefore the cam, is also stopped. The catchment wheel radially extending surface is positioned so that the cam is stopped in an appropriate position to begin recharging the closing spring.
摘要:
The present invention provides for an electrical switching apparatus operating mechanism opening assembly wherein the toggle assembly stop/kicker pin has been separated into a kicker pin and a stop pin. By separating the functions of the stop/kicker pin into separate pins, the kicker pin may now be located at the pivot point of the associated link. Further, the kicker pin and the stop pin are now disposed upon a cradle assembly as opposed to an elongated link. The cradle assembly further supports one of the toggle assembly links. Thus, rotation of the cradle assembly causes the toggle assembly to move. The operating mechanism opening assembly is configured so that, when an associated latch assembly latch plate assembly is released, the cradle assembly rotates so that the toggle assembly is moved away from a closing assembly closing device.