A switching device having a pole assembly, a drive unit, and a kinematic linkage arrangement is provided. The pole assembly includes interrupter units operably connected via an interlink arrangement representing a circuit breaker and a grounding switch, respectively. The drive unit operates the interrupter units. The kinematic linkage arrangement includes at least a lever member operably connected to the interlink arrangement and the drive unit, a cam member rigidly connected to the drive unit, and an elastic member adjustably connected to the cam member. The kinematic linkage arrangement transfer a predefined torque to the drive unit to maintain the circuit breaker in an open state.

The invention relates to an accumulator module for a hydromechanical spring-loaded drive, wherein the spring-loaded drive is provided to actuate a high-voltage power switch (12), and wherein the accumulator module contains a pressure-tight housing (1), an accumulator piston (2) which protrudes into the housing (1) and is axially moveable in the housing (1), and a sealing cover (4) which seals the housing in an pressure-tight manner. In addition, at least one connecting channel (5, 6) is provided, which is introduced into the housing (1) for transporting a highly pressurised fluid present between the inner wall (7) of the housing and the head (3) of the accumulator piston to a high-pressure channel (11) of the spring-loaded drive, which channel is outside the housing. In order to increase the service life of the accumulator module, at least one pressure relief groove (8) is circumferentially applied to the head (3) of the accumulator piston.

The invention relates to a self-supported activation device for an electromechanical switch, which can be used for the isolation of a faulty element of a battery, comprising a set of electrically connected elements. The activation device (1) is intended to activate switching in a switching device (2) of the type having electrical contact means (3) that can move between first and second electrical positions. The activation device comprises a current sensor (6a, 6b), a retaining element (7), and at least two movable elements (8, 9) solidly connected to a coil (10). When a current is detected by the current sensor (6a, 6b) the activation device can move from a non-activation configuration, in which the movable elements are retained by the retaining element in a first position intended to prevent the movement of the contact means of a switching device, into an activation configuration, in which the movable elements are no longer retained in the first position by the retaining element and instead occupy a second position intended to allow the movement of the contact means of a switching device. The coil (10) comprises a passage space for at least part of the contact means, and each of the movable elements can rotate about an axis such as to clear the passage space, in the aforementioned second position, while remaining solidly connected to the coil.

A motor apparatus for a switch drive of an electric switch has an electric motor and a control apparatus for controlling the electric motor. The control apparatus has a power supply device for the electrical power supply of the electric motor. The electric power supply has a rectifier unit, a voltage measurement unit for detecting the supply voltage or a rectifier output voltage of the rectifier unit, a switch unit for generating a drive voltage for the electric motor from the supply voltage or from the rectifier output voltage, and a control unit for controlling the switch unit as a function of the supply or rectifier output voltage detected. Accordingly, the motor apparatus has a motor housing which, besides the electric motor, houses part of the power supply device and/or at least part of the control unit.

A dual power automatic transfer switch mechanism comprises a switch housing; a first spring; a second spring; a first pin which is disposed to correspond to a first power supply, the first spring acts between the first pin and the switch housing; and a second pin which is disposed to correspond to a second power supply, the second spring acts between the second pin and the switch housing. The dual power automatic transfer switch mechanism further comprises a first driving disk is configured to actuate the first pin moves between a first power-on position and a first power-off position; and a second driving disk is configured to actuate the second pin moves between a second power-on position and a second power-off position. The first and second driving disk are configured to rotate synchronously such that the first and the second pin cannot be in the power-on position at the same time.

A dual power automatic transfer switch mechanism comprises a switch housing; a first spring; a second spring; a first pin which is disposed to correspond to a first power supply, the first spring acts between the first pin and the switch housing; and a second pin which is disposed to correspond to a second power supply, the second spring acts between the second pin and the switch housing. The dual power automatic transfer switch mechanism further comprises a first driving disk is configured to actuate the first pin moves between a first power-on position and a first power-off position; and a second driving disk is configured to actuate the second pin moves between a second power-on position and a second power-off position. The first and second driving disk are configured to rotate synchronously such that the first and the second pin cannot be in the power-on position at the same time.

A charging mechanism charges a stored-energy spring of a stored-energy spring mechanism. The charging mechanism contains a charging gear coupled to the stored-energy spring, an intermediate shaft coupled to the charging gear, an idler gear driven by a charging motor, a freewheel coupled to the idler gear, and a dog clutch that couples the freewheel to the intermediate shaft to charge the stored-energy spring and uncouples same from the intermediate shaft in the charged state. The dog clutch contains a first clutch block that is non-rotatably coupled to the intermediate shaft, a second clutch block connected to the freewheel, and a synchronizer ring arranged between the clutch blocks and is non-rotatably coupled to the first clutch block. During a rotation relative to the second clutch block, the synchronizer ring couples in a form-fitting manner to the second clutch block in a first direction of rotation about the axis of rotation.

A charging mechanism charges a stored-energy spring of a stored-energy spring mechanism. The charging mechanism contains a charging gear coupled to the stored-energy spring, an intermediate shaft coupled to the charging gear, an idler gear driven by a charging motor, a freewheel coupled to the idler gear, and a dog clutch that couples the freewheel to the intermediate shaft to charge the stored-energy spring and uncouples same from the intermediate shaft in the charged state. The dog clutch contains a first clutch block that is non-rotatably coupled to the intermediate shaft, a second clutch block connected to the freewheel, and a synchronizer ring arranged between the clutch blocks and is non-rotatably coupled to the first clutch block. During a rotation relative to the second clutch block, the synchronizer ring couples in a form-fitting manner to the second clutch block in a first direction of rotation about the axis of rotation.

A residual load disconnector switch (1) includes a rotary switch body (23), which includes a contact blade (24, 25, 26, 27), that is rotatable about an axis (A) and is arranged between a feed line connection (20) and a discharge line connection (21), and includes end-side contact surfaces (28, 29, 30, 31) protruding in a radial direction. The contact surfaces, in a closed rotary position (S1) of the rotary switch body (23), are in touching contact with the feed line connection (20) and with the discharge line connection (21). In an open rotary position (S2) of the rotary switch body (23), the contact surfaces are each spaced with respect to the feed line connection (20) and with the discharge line connection (21). The residual load disconnector switch (1) is rotationally limited in one rotational direction for performing switching movements and can be actuated unidirectionally and cyclically.

A device for controlling the switching of the contacts in an electrical apparatus comprises a unit inside, which are mounted a control lever in a pivot connection with the unit between two positions, a rotating element connected to the lever, and an actuating shaft connected between the rotating element and electrical contacts. The device further comprises a torsion spring mounted between the control lever and the rotating element, and a first and a second pawl scissor-mounted via a torsion spring, the first pawl cooperating with a first cam track of the lever to disengage the first pawl from a first stop and release the rotating element, and the second pawl cooperating with a second cam track of the lever to disengage the second pawl from a second stop and release the rotating element.