摘要:
According to an embodiment of the invention, a motor starter includes a connection module, which includes a second and third interface, wherein the second interface is electrically conductively connected to the third interface. The security evaluation unit can be mechanically coupled to the connection module so that an electrically conductive connection is produced between the first and second interfaces. The secure switch unit can be mechanically coupled to the connection module so that an electrically conductive connection between the third and fourth interfaces is produced, so that, in the coupled state of the security evaluation unit and the secure switch unit to the connection module; there is an electrically conductive connection between the first and fourth interfaces via the connection module, so that the control command can be transmitted from the security evaluation unit via the connection module to the secure switch unit.
摘要:
According to an embodiment of the invention, a motor starter includes a connection module, which includes a second and third interface, wherein the second interface is electrically conductively connected to the third interface. The security evaluation unit can be mechanically coupled to the connection module so that an electrically conductive connection is produced between the first and second interfaces. The secure switch unit can be mechanically coupled to the connection module so that an electrically conductive connection between the third and fourth interfaces is produced, so that, in the coupled state of the security evaluation unit and the secure switch unit to the connection module; there is an electrically conductive connection between the first and fourth interfaces via the connection module, so that the control command can be transmitted from the security evaluation unit via the connection module to the secure switch unit.
摘要:
At least one embodiment of the invention relates to a protective circuit for protection of an appliance, in particular of an electric motor, against thermal overloading. In at least one embodiment, the protective circuit includes a first and a second terminal for connecting a temperature detection element; a detection unit for detecting whether a resistance value of the temperature detector element which is connected between the first and the second terminals, is in a first or a second resistance range; a short-circuit detector for identifying whether there is a short circuit between the first and the second terminals; signaling outputs for emitting signal messages to an evaluation unit when the detected resistance value is in the second resistance range and/or when a short circuit has been identified by the short-circuit detector; and a third terminal, which is connected to the second terminal via a predetermined resistance.
摘要:
A motor starter whose production is improved is specified. In at least one embodiment, the motor starter includes a power semiconductor switch, an electromechanical bypass switch connected in parallel therewith, and control electronics to drive the bypass switch. In at least one embodiment, the control electronics are in the form of a printed circuit board assembly which is fixed to the bypass switch in an installed position, and the printed circuit board assembly and the bypass switch are designed such that, when being fixed, the printed board assembly makes electrical contact with the bypass switch at the same time.
摘要:
A motor starter whose production is improved is specified. In at least one embodiment, the motor starter includes a power semiconductor switch, an electromechanical bypass switch connected in parallel therewith, and control electronics to drive the bypass switch. In at least one embodiment, the control electronics are in the form of a printed circuit board assembly which is fixed to the bypass switch in an installed position, and the printed circuit board assembly and the bypass switch are designed such that, when being fixed, the printed board assembly makes electrical contact with the bypass switch at the same time.
摘要:
In a switching device with two controlled phases, in which each phase is associated with a respective printed circuit board assembly with at least one component to be cooled on a heat sink, the heat sink has a T-shaped cross section transversely with respect to its extent direction. In at least one embodiment, the printed circuit board assemblies are arranged on both sides of the center limb of the heat sink, with the components of the two printed circuit board assemblies facing one another and resting on in each case one side of the center limb.
摘要:
In a switching device with two controlled phases, in which each phase is associated with a respective printed circuit board assembly with at least one component to be cooled on a heat sink, the heat sink has a T-shaped cross section transversely with respect to its extent direction. In at least one embodiment, the printed circuit board assemblies are arranged on both sides of the center limb of the heat sink, with the components of the two printed circuit board assemblies facing one another and resting on in each case one side of the center limb.
摘要:
At least one embodiment of the invention relates to a protective circuit for protection of an appliance, in particular of an electric motor, against thermal overloading. In at least one embodiment, the protective circuit includes a first and a second terminal for connecting a temperature detection element; a detection unit for detecting whether a resistance value of the temperature detector element which is connected between the first and the second terminals, is in a first or a second resistance range; a short-circuit detector for identifying whether there is a short circuit between the first and the second terminals; signaling outputs for emitting signal messages to an evaluation unit when the detected resistance value is in the second resistance range and/or when a short circuit has been identified by the short-circuit detector; and a third terminal, which is connected to the second terminal via a predetermined resistance.
摘要:
A switching device and method are disclosed for terminating a braking process of a three-phase AC motor. The braking process of the AC motor is performed by way of a first and second thyristor. During the braking process of the AC motor, in a first step the first thyristor is actuated in such a way that a braking current is fed to the AC motor, and therefore a torque which brakes the AC motor is produced. In a second step the second thyristor is actuated in such a way that, when the first thyristor is quenched, the braking current is taken on by the second thyristor and the braking torque is maintained. The two steps are repeated during the braking process; wherein the second step is suppressed during the braking process after a last actuation of the first thyristor.
摘要:
A semiconductor switching module includes a power semiconductor element that is embodied in planar technology. In at least one embodiment, the power semiconductor element is provided with a base layer, a copper layer, and at least one power semiconductor chip that is mounted on the copper layer, and another electrically conducting layer which covers at least one load terminal of the power semiconductor chip. According to at least one embodiment of the invention, devices are provided for safely connecting the load terminal to a load circuit. The devices are configured such that a contact area thereof presses in a planar manner onto the electrically conducting layer.