Abstract: An assembly contains a disconnecting device for a surge-arresting device. A first contact and a second contact of the disconnecting device are connected by a first path having a switching element which can be thermally tripped. A second path is disposed electrically in parallel with the first path. An impedance element is disposed in the second path. A spark gap is disposed in the first path.

Abstract: A fuse assembly is formed with a receiving chamber. The receiving chamber is used for receiving a surge arrester indicator. The receiving chamber is a fireproof chamber and the surge arrester indicator is arranged in the fireproof receiving chamber.

Abstract: An item of electrical equipment includes a core clad with a glass fiber material. The glass fiber material is preimpregnated with a resin. A layer of a substance is applied to the glass fiber material. The substance is formed at least partly of high-temperature vulcanizing silicone rubber. A corresponding production method is also provided.

Abstract: An arrangement and a method have precisely one resistor stack for switching high voltages. The arrangement contains a switching device that has two contact devices, which are arranged in an insulator. The contact devices are separated from each other by a separation path, wherein the separation path can be bridged by a movable contact piece. One contact device is in contact with the resistor stack in a common housing. The common housing is formed by a direct coating of the resistor stack and the insulator.

Abstract: An item of electrical equipment includes a core clad with a glass fiber material. The glass fiber material is preimpregnated with a resin. A layer of a substance is applied to the glass fiber material. The substance is formed at least partly of high-temperature vulcanizing silicone rubber. A corresponding production method is also provided.

Abstract: An arrangement and a method have precisely one resistor stack for switching high voltages. The arrangement contains a switching device that has two contact devices, which are arranged in an insulator. The contact devices are separated from each other by a separation path, wherein the separation path can be bridged by a movable contact piece. One contact device is in contact with the resistor stack in a common housing. The common housing is formed by a direct coating of the resistor stack and the insulator.

Abstract: A separating device for a surge arrester has a housing and a fuse is arranged in the housing. There is also described an arrangement that includes a surge arrester and a separating device as described.

Abstract: A tensioning device is provided for a surge arrester having an end fitting and tensioner. The tensioning device has an axial clearance for receiving a tensioner and a region being conically tapered in axial direction to be introduced into a clearance of the end fitting being shaped for a substantially exact fit. The conically tapered region has delimitation walls defining the axial clearance for the tensioner being movable toward a clearance interior. An antifriction layer is applied to the surface of the conically tapered region. A production method for a surge arrester and a corresponding surge arrester are also provided.

Abstract: A tensioning device is provided for a surge arrester having an end fitting and tensioner. The tensioning device has an axial clearance for receiving a tensioner and a region being conically tapered in axial direction to be introduced into a clearance of the end fitting being shaped for a substantially exact fit. The conically tapered region has delimitation walls defining the axial clearance for the tensioner being movable toward a clearance interior. An antifriction layer is applied to the surface of the conically tapered region. A production method for a surge arrester and a corresponding surge arrester are also provided.

Abstract: A casting method producing a protective sheath around a surge arrester having a cylindrical discharge element between end fittings and retaining rods clamped into the fittings and surrounding the discharge element, includes placing the arrester into a first mold, pouring casting compound around the arrester to mold on a supporting part inwardly around the discharge element and outwardly around the rods, curing the compound to fix the rods and discharge element, removing the arrester with the supporting part from the first mold and placing it into a second mold, pouring compound around the arrester with supporting part forming a shield part shaped as protective sheath and curing the compound. A first casting mold has first recesses around rods of an inserted arrester. The rods and discharge element are fixed by a supporting part molded on during the first casting and cannot be bent or displaced during subsequent casting.

Abstract: A surge arrester is connected in an output current path from an electrical power supply system. A cut-off arrangement is also provided in the output current path and has a first electrode and a second electrode. The second electrode has a recess in which at least part of a gas generator is arranged. The recess is covered by a cover. When the cut-off arrangement responds, an additional volume for accommodation of expanded gas is provided upon demand, in addition to an arcing area provided in the interior of the cut-off arrangement.

Abstract: A circuit breaker device has a first electrode piece and a second electrode piece. In order to ensure protection from weather, the circuit breaker device is equipped with an electrically isolating housing. The electrically isolating housing has a first shell and a second shell. The first shell serves as a volatile casing for the second shell during production.

Abstract: An insulator configuration has a first stop point and a second stop point. A shank which has a non-circular enveloping contour is formed between the stop points. The shank is enclosed by at least one shield. The shield has an enveloping contour of the same type as the shank.

Abstract: A surge arrester has a discharge current path. The discharge current path is surrounded by an insulating sleeve. The insulating sleeve has at least one area that is optically transparent.

Abstract: A surge arrester includes a varistor arrangement with a plurality of varistor modules. Electrically conductive connections are provided between the varistor modules. The electrically conductive connections are secured by coupling arrangements. Due to the use of the varistor modules, surge arresters having a variety of electrical characteristics can be implemented.

Abstract: A surge arrester is connected in an output current path from an electrical power supply system. A cut-off arrangement is also provided in the output current path and has a first electrode and a second electrode. The second electrode has a recess in which at least part of a gas generator is arranged. The recess is covered by a cover. When the cut-off arrangement responds, an additional volume for accommodation of expanded gas is provided upon demand, in addition to an arcing area provided in the interior of the cut-off arrangement.

Abstract: A circuit breaker device has a first electrode piece and a second electrode piece. In order to ensure protection from weather, the circuit breaker device is equipped with an electrically isolating housing. The electrically isolating housing has a first shell and a second shell. The first shell serves as a volatile casing for the second shell during production.

Abstract: A surge arrester has a discharge current path. The discharge current path is surrounded by an insulating sleeve. The insulating sleeve has at least one area that is optically transparent.

Abstract: A method for coating a varistor block with an electrically insulating coating and a varistor block for a surge arrester. A varistor block is formed from several varistor elements. An electrically insulating coating is disposed around the varistor elements. The electrically insulating coating rests directly on a surface of the varistor block. Unwanted gas molecules are removed from the joining area between a surface of the varistor block and the coating before or while the electrically insulating coating is being applied to the varistor block.

Abstract: The invention relates to a surge voltage protector (1) which comprises a discharge current path with at least one varistor block (4a, 4b, 4c). In order to prevent the varistor blocks (4a, 4b, 4c) from bursting when an inner error is produced and an electric arc connected thereto is created, a coating (9, 9a, 9b, 9c) is applied in the region of the outer covering area of at least one varistor block (4a, 4b, 4c), said coating being made of a substance which triggers an electric flashover when a critical temperature of the varistor blocks (4a, 4b, 4c) is exceeded.