A protection adapter for the overvoltage protection of an electrical operating device in a high-voltage line. The protection adapter has a first adapter interface for electrically conductively coupling to an open-air interface of the high-voltage line, a second adapter interface for electrically conductively coupling to an operating-means interface of an electrical operating device, a connecting line for electrically conductively coupling the first adapter interface and the second adapter interface, and an electrically insulating insulation sheath which surrounds at least the connecting line. The protection adapter has a characteristic impedance for reducing electrical surges from the high-voltage line. There is also described a system with a high-voltage line, an electrical operating device, and a protection adapter.

An overvoltage protection device module includes an electrically conductive first electrode, an electrically conductive housing electrode, and a varistor member formed of a varistor material and electrically connected between the first electrode and the housing electrode. The housing electrode includes a housing end wall and a housing side wall collectively defining a housing cavity, and first and second housing members joined together at a joint. The first housing member forms a first portion of the housing side wall and the second housing member forms a second portion of the housing side wall. The varistor member is disposed in the housing cavity.

A sensor device according to the present invention includes: a sensor element including a temperature-sensitive resistor; and a protective cover that protects the sensor element, wherein the sensor element has a shape extending long along one direction, and the protective cover surrounds a periphery of the sensor element with a plurality of support pillars extending obliquely with respect to a longitudinal direction of the sensor element. It is preferable that the plurality of support pillars intersect in a lattice-like manner.

A sensor device according to the present invention includes: a sensor element including a temperature-sensitive resistor; and a protective cover that protects the sensor element, wherein the sensor element has a shape extending long along one direction, and the protective cover surrounds a periphery of the sensor element with a plurality of support pillars extending obliquely with respect to a longitudinal direction of the sensor element. It is preferable that the plurality of support pillars intersect in a lattice-like manner.

A variable resistor includes: a first substrate having a first main surface; a resistor disposed on the first main surface; a first wiring pattern disposed on the first main surface and connected to the resistor; a spacer having an opening; a second substrate that: has second and third main surfaces, and is disposed on the first substrate via the spacer such that the second main surface is opposed to the first main surface; a connecting body that is: disposed on the second main surface such that the connecting body is disposed in the opening, and configured to electrically connect to the resistor by pushing of a pusher from the third main surface; and a second wiring pattern. A resistance value between the first wiring pattern and the second wiring pattern is changed based on a pushing position of the pusher.

A variable resistor includes: a first substrate having a first main surface; a resistor disposed on the first main surface; a first wiring pattern disposed on the first main surface and connected to the resistor; a spacer having an opening; a second substrate that: has second and third main surfaces, and is disposed on the first substrate via the spacer such that the second main surface is opposed to the first main surface; a connecting body that is: disposed on the second main surface such that the connecting body is disposed in the opening, and configured to electrically connect to the resistor by pushing of a pusher from the third main surface; and a second wiring pattern. A resistance value between the first wiring pattern and the second wiring pattern is changed based on a pushing position of the pusher.

A resistor includes a substantially cylindrical resistive element having a resistance of less than about 1 m, a substantially cylindrical first termination electrically connected to the resistive element and a second termination electrically connected to the resistive element. The substantially cylindrical first termination is hollow to allow for accepting a connection such as from a battery cable. In addition there may be sense leads present on the resistor. A method of forming a substantially cylindrical resistor includes forming a hollow cylindrical resistor body by rolling a flat sheet comprising a resistive element and a first termination and a second termination joined on opposite ends of the resistive element.

An apparatus can a load bank module configured to electrically couple with at least one other load bank module. The load bank module and the at least one other load bank module can be further configured to electrically couple to a power source to dissipate power received from the power source. The load bank module can include trays including resistive components to dissipate the power received from the power source at a voltage level of the power source. A resistive component of the resistive components can include a coil, the coil can extending between a first end of the resistive component and a second end of the resistive component opposite the first end of the resistive component to form three or more turns of the coil.

An apparatus can a load bank module configured to electrically couple with at least one other load bank module. The load bank module and the at least one other load bank module can be further configured to electrically couple to a power source to dissipate power received from the power source. The load bank module can include trays including resistive components to dissipate the power received from the power source at a voltage level of the power source. A resistive component of the resistive components can include a coil, the coil can extending between a first end of the resistive component and a second end of the resistive component opposite the first end of the resistive component to form three or more turns of the coil.

A power resistor device comprising: a power resistor assembly; and an enclosure, the enclosure comprising: a first planar portion; a second planar portion; a first flexible resilient portion; and a second flexible resilient portion; wherein the power resistor assembly is arranged between the first and second planar portions of the enclosure; wherein the first flexible resilient portion and the second flexible resilient portion each form a bend between the first and second planar portions; and wherein the first flexible resilient portion and the second flexible resilient portion each contact a planar portion at a respective contact point, each contact point being spaced from a respective edge of the power resistor assembly towards a centre of the respective planar portion.