Abstract: Methods and apparatuses for simulating an electromechanical object are described. An electromagnetic solver is invoked for an electromagnetic model of the object to generate an electromagnetic loss of the object an operating temperature. A temperature dependent electromagnetic loss of the object is determined based on the electromagnetic loss at the operating temperature. The temperature dependent electromagnetic loss varies according to a temperature of the object. A thermal solver is invoked for a thermal model of the object to estimate a temperature of the object based on the temperature dependent electromagnetic loss of the object and the operating temperature.

Abstract: An embedded pole part for medium or high voltage use, with a vacuum interrupter which is embedded into an insulating resin, wherein a current and/or voltage sensor with sensor housing is integrated inside the insulating resin. In order to overcome the problems of the art, and to enhance the accuracy of voltage measurement, a metal grid is implemented into the insulating resin, which is arranged between the sensor housing of the current and/or voltage sensor and the outer surface of the insulating resin.

Abstract: A method for injection molding of thermoplastic pole parts utilizes a mold to fix at least one vacuum interrupter and contact terminals during a molding process. At least one injection opening or gate for injection of thermoplastic material is formed into the mold. The mold is applied with multiple injection openings at least along its long axis, for injection of hot thermoplastic material, and the injection openings or gates can be steered in such a way that they inject thermoplastic material simultaneously or with a defined time dependent injection pattern. This process alleviates the issue of a pressure gradient along the long axis of the molded pole part, shortens process times, and achieves a homogenous dissipation of material during the molding process.

Abstract: An electrical connection for medium and high voltage switchgears, with an electrical terminal of a switchgear, wherein an electrical contacting surface of the electrical terminal is electrically connected with a contacting surface of an external electrical connector part via a connecting system. In order to ensure a low resistance electrical connection, the connecting system can have a female screw thread in a stud hole of the electrical terminal as well as in a stud hole of the external connector part, and a stretch bolt with male screw threads at each opposite ends, screwed into the female screw thread of the electrical terminal with one end of the stretch bolt, and into the female screw thread of the external connector part at the other end of the stretch bolt.

Abstract: An electrical connection for medium and high voltage switchgears, with an electrical terminal of a switchgear, wherein an electrical contacting surface of the electrical terminal is electrically connected with a contacting surface of an external electrical connector part via a connecting system. In order to ensure a low resistance electrical connection, the connecting system can have a female screw thread in a stud hole of the electrical terminal as well as in a stud hole of the external connector part, and a stretch bolt with male screw threads at each opposite ends, screwed into the female screw thread of the electrical terminal with one end of the stretch bolt, and into the female screw thread of the external connector part at the other end of the stretch bolt.

Abstract: An embedded pole part for medium or high voltage use, with a vacuum interrupter which is embedded into an insulating resin, wherein a current and/or voltage sensor with sensor housing is integrated inside the insulating resin. In order to overcome the problems of the art, and to enhance the accuracy of voltage measurement, a metal grid is implemented into the insulating resin, which is arranged between the sensor housing of the current and/or voltage sensor and the outer surface of the insulating resin.

Abstract: A shielding element is disclosed for use in medium voltage switchgears with vacuum interrupters with at least two contacts, which are movable along a switching path between closed and open contact positions, wherein the shielding element is positioned around the contact position region in the vacuum interrupter, wherein at least the inner surface of the shielding is applied with an implemented surface structure to form a topographic structure which is a rough or a structured surface. To enhance the energy absorbance behavior of the shielding, the implemented topographic structure can be formed such that by given constant or approximately constant volume (Vi) of the shielding body, the surface ratio of the treated surface (S2) with implemented surface structure and volume V2, and a untreated surface (S1) without topographic structure and volume V1 is greater than 1, so that this follows the condition: V1˜V2 and S2/S1>1.

Abstract: A method for injection molding of thermoplastic pole parts utilizes a mold to fix at least one vacuum interrupter and contact terminals during a molding process. At least one injection opening or gate for injection of thermoplastic material is formed into the mold. The mold is applied with multiple injection openings at least along its long axis, for injection of hot thermoplastic material, and the injection openings or gates can be steered in such a way that they inject thermoplastic material simultaneously or with a defined time dependent injection pattern. This process alleviates the issue of a pressure gradient along the long axis of the molded pole part, shortens process times, and achieves a homogenous dissipation of material during the molding process.

Abstract: A shielding element is provided for medium voltage switchgears with vacuum interrupters having at least two contacts, which are movable along a switching path between closed and open contact positions. The shielding element is positioned around the contact position region in the vacuum interrupter. To reduce the use of material and to optimize the energy absorbance behavior of the shielding element, the inner surface of the shielding element is applied with a topographic structure which is aligned parallel to the switching path of the contacts. The present disclosure also provides a method of manufacturing such a shielding element.

Abstract: A method for injection molding of thermoplastic pole parts utilizes a mold to fix at least one vacuum interrupter and contact terminals during a molding process. At least one injection opening or gate for injection of thermoplastic material is formed into the mold. The mold is applied with multiple injection openings at least along its long axis, for injection of hot thermoplastic material, and the injection openings or gates can be steered in such a way that they inject thermoplastic material simultaneously or with a defined time dependent injection pattern. This process alleviates the issue of a pressure gradient along the long axis of the molded pole part, shortens process times, and achieves a homogenous dissipation of material during the molding process.

Abstract: A shielding element is disclosed for use in medium voltage switchgears with vacuum interrupters with at least two contacts, which are movable along a switching path between closed and open contact positions, wherein the shielding element is positioned around the contact position region in the vacuum interrupter, wherein at least the inner surface of the shielding is applied with an implemented surface structure to form a topographic structure which is a rough or a structured surface. To enhance the energy absorbance behavior of the shielding, the implemented topographic structure can be formed such that by given constant or approximately constant volume (Vi) of the shielding body, the surface ratio of the treated surface (S2) with implemented surface structure and volume V2, and a untreated surface (S1) without topographic structure and volume V1 is greater than 1, so that this follows the condition: V1˜V2 and S2/S1>1.

Abstract: Exemplary embodiments are directed to a method for producing a circuit-breaker pole part that includes an external insulating sleeve made of a solid synthetic material for supporting and housing a vacuum interrupter insert for electrical switching a medium-voltage circuit. An adhesive material layer at least on the lateral area of the interrupter insert is applied and the coated interrupter is embedded by molding with the solid synthetic material in order to form a single layer of the surrounding external insulating sleeve.

Abstract: A magnetic actuator with a movable part and a non-movable part is disclosed. The movable part can include two rotatable ferromagnetic elements with a portion close to the non-movable part to reduce magnetic force acting on the movable part during a switching operation, while moving the movable part towards the non-movable part. As the distance between the movable part and the non-movable part is reduced, a current through a coil of the non-movable part for generating magnetic force for acting on the movable part during a switching operation.

Abstract: The present disclosure provides a method of manufacturing a current terminal for an embedded pole part, in which a vacuum interrupter is molded by an isolating coverage in a hot and pressure injection process, and such a pole part. At the position of the upper electric terminal at the fixed contact side of the vacuum interrupter, a pressure protecting element is placed into the mold, at least close to the upper part the fixed contact side of the vacuum interrupter and/or together with it, and the protecting element, the terminal and the vacuum interrupter are embedded by injection molding.

Abstract: Exemplary embodiments of the present disclosure are directed to a method for producing a circuit-breaker pole part by molding an external insulating sleeve with insulation material, mounting a vacuum interrupter insert inside the insulating sleeve, electrically connecting the vacuum interrupter insert with an upper electrical terminal and a lower electrical terminal arranged in the wall section of the insulating sleeve The method also includes molding the external insulating sleeve, wherein only the upper electrical terminal is embedded in the insulation material, coating the vacuum interrupter insert with an extra layer made of insulation material for thermo extension compensation, mounting the coated vacuum interrupter insert by screwing on a threaded bolt onto the upper electrical terminal.

Abstract: An embedded pole part is provided with an isolating housing made of thermoplastic material. The housing embeds an interrupter as well as the electric terminals of the pole part. At an outer surface of the housing, horizontal and/or vertical aligned three-dimensional structures joined by material engagement are implemented into the thermoplastic material, to achieve a higher mechanical stiffness as well as higher creepage length of the pole part. The mechanical and dielectric parameters of the pole part are thereby strengthened, for example, in the case of a short circuit current.

Abstract: The present disclosure provides a method of manufacturing a current terminal for an embedded pole part, in which a vacuum interrupter is molded by an isolating coverage in a hot and pressure injection process, and such a pole part. At the position of the upper electric terminal at the fixed contact side of the vacuum interrupter, a pressure protecting element is placed into the mould, at least close to the upper part the fixed contact side of the vacuum interrupter and/or together with it, and the protecting element, the terminal and the vacuum interrupter are embedded by injection molding.