Abstract: A residual current protective device (RCD) and a method for AC/DC-sensitive differential current measurement with a voltage-dependent functional unit, which includes an AC/DC-sensitive differential current measuring device, has a current sensor and an AC/DC-sensitive current detection module. A microcontroller configures the voltage-dependent functional unit and evaluates the differential current detected by the AC/DC-sensitive differential current measuring device.

Abstract: The invention relates to a method and a device for determining a maximum leakage current in unearthed power supply networks with a plurality of conductors. The method comprises the steps of: feeding of a measurement signal UP with a measurement frequency fPuls into a conductor arrangement, setting the measurement frequency fPuls, measuring a line-to-line voltage UL-E for each conductor, determining a maximum occurring line-to-line voltage UL-Emax from the measured line-to-line voltages UL-E, determining a voltage UZe across a measurement resistance RM for calculating a leakage impedance ZE, calculating the leakage impedance ZE, and calculating a maximum leakage current THC. The device comprises a signal generator for feeding in the UP with the fPuls, a network coupling circuit between the signal generator and the conductor arrangement, a voltage measuring circuit for measuring the UL-E, and an impedance measuring circuit for determining the Ze by means of the determining of the UZe.

Abstract: A sighting telescope has two image planes situated between an objective and an ocular. A first such plane is situated closer to the objective and a second image plane is closer to the ocular. A reversal system is situated between the first and second image planes containing reversing lens elements. The reversing lens elements for a first and for a second adjustment distance can be adjusted by an adjustment means in a manner that the image in the second image plane shall be parallax-free between the target image and the target mark.

Abstract: An adjustment tower for telescopic sights includes a first adjustment device and a second adjustment device, which are capable of rotating independently of one another relative to a base. The first adjustment device can be rotated in an adjustment position and has a secured position in which it is secured against rotation. The first adjustment device is also axially movable relative to the base to a limited extent such that in the adjustment position, the adjustment device projects further out of the second adjustment device than in the secured position. The tower further includes a stored-energy device that exerts an axial force on the first adjustment device from the secured position in the direction of the adjustment position.

Abstract: A telescopic sight has an objective lens system, an eyepiece lens system and an inversion system disposed in the optical path between the objective lens system and the eye piece lens system and pivotably supported by means of a height adjustment device, a lateral adjustment device, a reticle, and a projection means disposed at the end of the inversion system on the eyepiece side. The inversion system generates an image plane at the end on the eyepiece side having a perpendicular alignment relative to the inversion system optical axis. The projection means generates a projection in the field of view of the sight, which is located in a projection plane, wherein the projection plane is aligned perpendicularly relative to the optical axis and in the image plane of the inversion system. A display means allocated to the inversion system generates information and/or an a target mark in the projection plane.

Abstract: The invention relates to an insulation monitoring device (IMD) in a non-grounded electrical DC grid (DC-IT System), particularly an electrical photovoltaic system (PV). Said device has a power supply unit (B), which is supplied with electrical energy from the electrical DC grid (DC-IT System). According to the invention a rechargeable energy store (CIMD) is present, in particular a capacitor with a charging diode (D) connected upstream. This is supplied with electrical energy (UIMD) via the electrical DC grid and supplies the power supply unit (B) in the event of a temporary failure of the electrical DC grid, so that continued operation of the insulation monitoring device (IMD) is possible until the non-grounded electrical DC grid is re-established.

Abstract: A sighting telescope included a beam splitter which is slanted relative to an optic axis and is configured between an objective and an ocular, further a projection element to generate onto the beam splitter a target mark visible from the ocular, the projection element being fitted with a light source, further two image planes between the objective and the ocular, of which a first image plane is nearer the objective and a second image plane is nearer the ocular, and a reversal system configured between the image planes, a reticle being situated in the first image plane and the target mark in the second image plane.

Abstract: The present invention relates to a device for current measuring in power supply networks comprising transformers for measuring current, a signal processing apparatus arranged on a printed circuit board and screw fastenings for mounting the device. The cable ducts of the transformers are orientated parallel to the plane of the printed circuit board, which has openings flush to the cable ducts, and the screw fastenings are fastening tabs with mounting holes, spaced so standards-compliant mounting is possible. In an alternate embodiment, the cable ducts are orientated perpendicularly to the plane of the printed circuit board, the screw fastenings are constructed as an angle rail with cable outlets and standards-compliant mounting holes, and the printed circuit board is internally fastened on one side of the angle rail. In another alternate embodiment the transformers are installed with the printed circuit board in a common housing with fastening tabs and standards-compliant mounting holes.

Abstract: The invention relates to a telescopic sight for a firearm which has a telescope body (2) with an eyepiece (3) and an objective (4) and an illuminating device for an illuminated graticule, wherein the illuminating device has a control electronics unit (22) and an energy store (23). Further, the invention relates to an illuminating module (7) for a telescopic sight of this kind and a programming adapter (30) for an illuminating module of this kind. In order to enable an individual adjustment of the illumination characteristic, the control electronics unit (22) is arranged in a housing (10) which can be releasably accommodated in a saddle (8) on an outside of the telescopic sight (1), wherein the housing (10) with the control electronics unit (22) forms an independently manageable illuminating module (7) which can be fitted into a programming adapter (30).

Abstract: The invention relates to a method and a device for determining a maximum leakage current in unearthed power supply networks with a plurality of conductors. The method comprises the steps of: feeding of a measurement signal UP with a measurement frequency fPuls into a conductor arrangement, setting the measurement frequency fPuls, measuring a line-to-line voltage UL-E for each conductor, determining a maximum occurring line-to-line voltage UL-Emax from the measured line-to-line voltages UL-E, determining a voltage UZe across a measurement resistance RM for calculating a leakage impedance ZE, calculating the leakage impedance ZE, and calculating a maximum leakage current THC. The device comprises a signal generator for feeding in the UP with the fPuls, a network coupling circuit between the signal generator and the conductor arrangement, a voltage measuring circuit for measuring the UL-E, and an impedance measuring circuit for determining the Ze by means of the determining of the UZe.

Abstract: The invention relates to an insulation monitoring device that forms a measuring circuit with an unearthed IT power supply system for monitoring an insulation resistance, wherein the measuring circuit can be interrupted by a breaker device arranged in the insulation monitoring device. Furthermore, the invention relates to a method for performing an initial and/or repeated test of an insulation resistance in an unearthed IT power supply system and for monitoring the insulation resistance by means of an insulation monitoring device. For performing the initial and/or repeated test, the measuring circuit is interrupted by way of a manual switching act that activates a breaker device arranged in the insulation monitoring device.

Abstract: A method and device for monitoring a test interval for a residual current protective device includes measuring an operating time of the residual current protective device, triggering an alarm report if the measured operating time exceeds an operating time limit, and restarting the operating time measurement upon detection of a trigger process of the residual current protective device. In an embodiment of the invention, a time period is measured independent of the operating time of the residual current protective device.

Abstract: A method for monitoring and measuring an insulation resistance in ungrounded and grounded power supply systems includes the method steps of generating a periodic measuring signal, coupling in the measuring signal between active conductors of the power supply system to be monitored and ground, and detecting and evaluating measured values of the measuring signal. In one embodiment of the invention, the generated measuring signal is formed as a multi-frequency signal by the superposition of a finite number of harmonic oscillations with at least three harmonics. Alternatively, the multi-frequency signal can also be realized by means of a targeted, portioned construction of the signal shape in the time domain on the basis of a binary sequence optimization or by generating the measuring signal by means of the time-division multiplexing method.

Abstract: Regarding a sighting telescope reversing system which comprises a guide casing fitted with a linear cam slot, further an external casing fitted with an external cam slot and fixed in the axial direction while rotatably supported on the guide casing, a mount holding a lens element and fitted with a guide pin passing through the linear cam slot as well as through the external cam slot, the present invention stipulates that the guide pin be fitted with a first and a second collar, both collars resting on a common shaft, the first collar being displaceable within the external cam slot and the second collar being displaceable within the linear cam slot.

Abstract: The invention relates to a connecting bridge to connect two optical units. This connecting bridge is fitted in each case with at least one coupling for each optical unit making possible, besides mechanical coupling, also transmitting electronic signals and/or setting up an electrical connection.

Abstract: A sighting telescope has two image planes situated between an objective and an ocular. A first such plane is situated closer to the objective and a second image plane is closer to the ocular. A reversal system is situated between the first and second image planes containing reversing lens elements. The reversing lens elements for a first and for a second adjustment distance can be adjusted by an adjustment means in a manner that the image in the second image plane shall be parallax-free between the target image and the target mark.

Abstract: A pulse generator circuit arrangement for the search for insulation faults in IT networks includes a rectifier circuit for transforming an IT network voltage into a DC intermediate circuit and switching elements having a trigger signal input for switching on and off a DC intermediate circuit voltage. A circuit device downstream of the switching elements generates a pulsed current to be supplied to the IT network. The circuit arrangement includes a control and evaluating logic for determining the insulation resistance of the IT network and also a circuit device for generating the pulsed current, which is formed as a current regulating device and allows a dynamic adjustment of the pulsed current depending on the determined insulation resistance.

Abstract: The invention relates to a power charging device (10) for an electric vehicle (12) with an electric energy store (14). The power charging device (10) comprises at least one rectifier means (16) for converting a supply voltage (18) into a charging d.c. voltage (20), a contacting means (22) for contacting a plug-in connection supply point (24) of the electric vehicle (12), and a residual current monitoring device (26) for detecting a current difference in the contacting means (22) and/or the electric vehicle (12) during a charging process of the energy store (14) of the electric vehicle (12). The invention is characterized in that the residual current monitoring device (26) is designed at least for detection of a direct current difference ?I and comprises a cutoff element (28) which can interrupt the charging process when a predeterminable direct current cutoff difference (36) is exceeded over a predeterminable cutoff time.

Abstract: A setting assembly to adjust components linked to it, in particular to adjust the reticle of a sighting telescope, comprising an adjustment cap system which is rotationally supported on a coupling and which drives said setting assembly, said coupling being designed to transmit adjustment cap system displacements to components that can be connected to the coupling in order to transmit their setting(s) and a first locking element mounted on the coupling being able to engage a second locking element in a way that the position of the adjustment cap system can be fixed in place relative to the coupling. The first locking element is an at least segment-wise externally toothed collar and the second locking element is an at least segment-wise internally toothed locking ring. A resiliently supported detent at the coupling may engage by detent recesses an associated detent ring at the adjustment cap system.

Abstract: The invention relates to a method and an electrical protection and monitoring device with an insulation monitoring instrument and a differential current monitoring instrument in an electric vehicle for safe driving operation and also for safe charging and energy recovery operation of the electric vehicle at a charging station. The invention further relates to a device for the safe charging and energy recovery operation of an electric vehicle at a charging station with electrical protection and monitoring devices.