9results about "Switches with movable electrical contacts" patented technology

Disclosed are a contact unit and an isolation switch. The contact unit includes a housing and a contact mechanism arranged in the housing. The contact mechanism includes a moving contact assembly and a pair of static contact assemblies. The moving contact assembly includes a contact support. The contact support is provided with a pair of moving contact portions. The moving contact portion is driven by the contact support to correspondingly match the static contact portion of the static contact assembly. The housing is provided with a swing limiting groove. A rotary supporting portion is arranged at a central position of the contact support in a protruding manner. The swing supporting portion rolls along a side wall of the swing limiting groove. A rolling surface contour line of the swing supporting portion is an equal-width curve. The swing supporting portion in the present invention rolls along the swing limiting groove respectively so that a movement trajectory is longer, so that the contact support obtains a larger linear velocity.

The present application relates to a kind of overload protection method and system of three-station mechanism, it is related to the field of electrical equipment, it includes: collection rotation parameter;From the initial load in the rotation parameter is called, and load type is determined according to initial load;In response to the load type, call reference torque curve, and extract rotation angle from the rotation parameter;Reference torque is called from reference torque curve based on the rotation angle, and correction coefficient is determined according to the initial load;Combination reference torque and correction coefficient determine locked-rotor threshold, and extract rotation torque from the rotation parameter;When the rotation torque is greater than locked-rotor threshold, determine deceleration damping according to the rotation torque;According to the deceleration damping, determine deceleration current;In response to the deceleration current, generate and send damping adjustment instruction.The present application has the effect of improving the stability of three-station mechanism operation, reducing the situation that three-station mechanism is damaged due to torque overload.

The utility model discloses a high -tension isolator convenient to overhaul, including mounting seat, and mounting seat is cavity structure, and the middle part of mounting seat top is equipped with the rectangular hole, and both ends of mounting seat top are fixed with the insulator, and one insulator top is installed the contact seat, and another insulator top is installed the static contact, and the U -shaped frame is fixed in contact seat top, and the inside wall rotation is connected with the breaker in the U -shaped frame, and the inside wall rotation is connected with the pivot in the middle part of mounting seat. The utility model discloses through the cooperation of first rotating mechanism and second rotating mechanism, can make the breaker and static contact separate, realize the power -off purpose, need not through professional tool disassembly spare part mode operation, has simplified the overhaul procedure, has reduced the time required, thereby has improved work efficiency, through the limiting mechanism of design, the rotation of pivot is limited, avoids the misoperation and leads to the switch closing, thereby effectively prevents the electric shock accident, improves the security of equipment.

A DC disconnector comprising a static electrical contact, at least one moveable electrical contact comprising a plurality of conductor blades, and a shaft, coupled to the movable electrical contact. The shaft is configured to actuate the moveable electrical contact between a first configuration and a second configuration, wherein at least a portion of each conductor blade abuts the static electrical contact in the first configuration, and wherein the plurality of conductor blades are displaced from the static electrical contact in the second configuration. The Disconnector further comprises at least one of a plurality of features, including (i) wherein the static electrical contact comprises plurality of contact elements; (ii) wherein the shaft is coupled to the moveable electrical contact by an eccentric component; (iii) wherein the moveable electrical contact comprises a plurality of spacers arranged in between the conductor blades; (iv) wherein the position of the shaft axis is adjustable; and (v) wherein the conductor blades are configured to be removable from the Disconnector.

The application discloses a grounding switch with a locking mechanism, comprising a mounting base, a movable contact, a static contact and a main drive shaft for driving the movable contact and the static contact to close or open are arranged on the mounting base, at least one group of drive paddles are fixed on the circumferential outer wall of the main drive shaft, the main drive shaft drives the drive paddles to trigger the movable contact to rotate around the axis of the main drive shaft; the mounting base is further provided with a locking mechanism for limiting the rotation of the movable contact around the axis of the main drive shaft, an unlocking push rod is fixed on the drive paddle, and the unlocking push rod is used for releasing the limitation of the locking mechanism on the movable contact when the drive paddle rotates with the main drive shaft; the locking mechanism directly acts on the movable contact through physical interference and limits the freedom of the movable contact at a preset position, when closing or opening is needed, the rotation of the main drive shaft drives the unlocking push rod to move through the drive paddle in advance, the unlocking push rod acts on the locking mechanism in advance to make the locking mechanism disengage, and the unlocking and opening are realized in sequence.

A switchgear which includes at least one three-position disconnector arranged in a gas-tight space of a frame. Each phase of the disconnector includes first, second, and third fixed contacts and a moving contact. The first fixed contact is directly connected to a main busbar, so that the conductive main circuit has shorter wiring, saving floor space, and conductor materials. An outer surface of the moving contact is provided with a slot extending in an axial direction to accommodate rolling elements, which guide the moving contact to move through the second fixed contact and prevent it from rotating. The moving contact is provided with grooves, which accommodate contact pieces to realize connection with the corresponding fixed contact. The moving contact of each disconnector is coupled to the same drive shaft so that it is connected to an external operating mechanism via only one sealing point on the frame.

A system and method for operating a vacuum interrupter in a self-resetting interrupter. The method includes detecting fault current, opening the vacuum interrupter a first time using power harvested from the current transformer when the fault current is detected, and storing a polarity of the detected fault current when the vacuum interrupter is opened. The method then determines a close time to close the vacuum interrupter so that the current has the same polarity that was stored when the vacuum interrupter was opened and that actuation of closing the vacuum interrupter ends at a current zero crossing, closes the vacuum interrupter at the close time, and opens the vacuum interrupter a second time after the vacuum interrupter is closed using power harvested from the current transformer.

The present disclosure relates to an equipotential connection structure for a switchgear device, a switchgear device comprising the same, and a method for manufacturing the same. The equipotential connection structure comprises a first conductive arm (20) and a second conductive arm (30) pivotably connected to each other by a rotation shaft (50), wherein the rotation shaft (50) passes through and is rotatably mounted into a first hole (211) provided in the first conductive arm (20) by a first insulated sleeve (61), and passes through and is rotatably mounted into a second hole (311) provided in the second conductive arm (30) by a second insulated sleeve (62), and wherein the equipotential connection structure (S) further comprises an equipotential connection member (90) comprising: a body (91) sleeved on the rotation shaft (50) and electrically connected to the rotation shaft (50); and at least one connection leg (92) extending from the body (91) and abutting against the first conductive arm (20) or the second conductive arm (30) to allow the rotation shaft (50) to be electrically connected to the first conductive arm (20) or the second conductive arm (30).