摘要:
A modular transfer switch (22) and actuator (20) wherein multiple transfer switches are connectable in linear arrangement with the actuator such that the actuator controls the position of all of the transfer switches. Each of the transfer switches (22) includes a contact assembly (48) that converts over-rotation of the drive linkage (26) in the transfer switch to added pressure between the load contacts and the power contacts in the contact assembly.
摘要:
The control device possesses a rigid main part combining most of the functional elements of this type of control device. It is made up of two portions of a rotary shaft, having placed between them a cam and a support arm that are connected together by a pivot that is offset relative to the axis of rotation. A toothed wheel having an inner set of teeth is placed around the support arm that is provided with a rachet system. The toothed wheel has an outer set of teeth-driven by a motor, via an intermediate gearwheel. The pivot controls the compression of the actuator spring by the assembly rotating. The device is applicable to high and medium voltage circuit breakers and switches.
摘要:
For application to medium- and high-voltage circuit breakers, the control device makes it possible to actuate opening of the circuit breakers used in the medium- and high-voltage networks very quickly. The spring used in the control device is a spring of the composite type, having a curved C- or Ω-shape. The spring has a stationary first end and a movable second end that is pivotally connected to the end of a lever device, that is itself constrained to rotate with the drive shaft of the control device.
摘要:
A circuit breaker according to the present disclosure may include a movable contact configured to be brought into contact with or separated from the stationary contact; and a switching mechanism configured to switch the movable contact, wherein the switching mechanism includes a shaft rotatably installed therein; a transfer link configured to transfer a driving force from the shaft to the movable contact; and a pin configured to hinge-couple the shaft to the transfer link and insulate them from each other, and the pin is installed with a wear resistant member at a portion brought into contact with the shaft.
摘要:
A switch assembly includes an M-blade snap spring, an actuation arm, and a switch. The M-blade snap spring exhibits snap-action movement between a first actuator position and a second actuator position. The switch is responsive to the snap-action movement of the M-blade to move between a first switch position and a second switch position. The actuation arm is configured to selectively cause the M-blade snap spring to move, via snap-action, between the first actuator position and the second actuator position, which in turn causes the switch to move between the first switch position and the second switch position, respectively.
摘要:
Linkage structure is connected between an operating mechanism and an actuating assembly of a circuit breaker for opening and closing an electrical contact of a pole assembly. The linkage assembly includes a lever to connect with the actuating assembly. A connection rod is coupled to one end of the lever and is associated with a close spring for closing the electrical contact. A spring structure is coupled to another end of the lever. The spring structure includes an open spring providing a spring force on the lever for opening the electrical contact. The open spring places the connection rod in tension. Retaining structure is associated with the lever and the spring structure to ensure that the spring force of the open spring, exerted on the lever, is directed to the retaining structure so that tension on the connection rod is removed, enabling the connection rod to be serviced.
摘要:
An electrical switch having a contact system including at least one fixed contact and a switching contact. The switch has an actuating element for acting in switching fashion on the contact system and a switching slide which bears the switching contact and is moveable in a movement direction between two positions, wherein in one position the switching contact is remote from the fixed contact and in the other position the switching contact bears against the fixed contact. The switch has an actuating slide which is moveable by virtue of the actuating element and is coupled to the switching slide by an elastic element. The switch includes a latching mechanism which interacts with the switching slide, such that the switching slide can be switched over between the two positions on actuation of the actuating element with a type of snap-action movement.
摘要:
A spring operation device and a method for assembling the same are disclosed. A switching device including the spring operation device is also disclosed. In the spring operation device disclosed in at least one embodiment of the present invention, by way of a smooth corrugated protuberance, the protuberance can push the operation mechanism of the spring operation device to rotate accurately and efficiently under the effect of a spring at the moment when the spring's energy storing process is completed, so as to accomplish the release of energy.
摘要:
A load interrupter, especially to be mounted on a busbar includes a housing and a cover that is hinged thereto, a snap switch mechanism for establishing or interrupting an electrical connection between corresponding contacts. A control lever for switching between a current-carrying operation and a current interrupting operation, and a control mechanism which, depending on the position of the control lever, releases or blocks a release element for a displacement. The release element being coupled to a locking device which is arranged in such a manner that it can be engaged with or disengaged from the cover.
摘要:
A status indicating assembly is provided for an electrical switching apparatus, such as a circuit breaker. The circuit breaker includes a housing, separable contacts enclosed by the housing, and an operating mechanism for opening and closing the separable contacts. The operating mechanism comprises a stored energy mechanism and a primary latch. The primary latch is pivotable between a latched position corresponding to the stored energy mechanism being chargeable, and an unlatched position corresponding to the stored energy mechanism being discharged. The status indicating assembly includes a first indicator for indicating whether the separable contacts are open or closed, a second indicator for indicating whether the stored energy mechanism is charged or discharged, and a third indicator for indicating whether or not the circuit breaker is ready to close the separable contacts.