Abstract: Optical detector with pulsed emission, particularly of the background suppression cell type, with means for rapid regulation of the emission current.

Abstract: The present invention relates to a power supply control module for loads or motors, which is mounted as an addition under a main electromagnetic switch appliance (Ap) and having, in a casing (1), current paths with commutating poles controlled by an electromagnet control device and substantially characterized by the fact that it includes at the rear, means (21, 22, 23, 31, 32) capable of channelling gases flowing out of the breaker chambers of the main appliance (Ap).

Abstract: A light beam output from a magneto-optical current transducer using the Faraday effect is divided into two output light beams. A first output light beam is applied, via an output polarizer, to a first optical input of a processing unit. A second output light beam is applied to a second optical input of the processing unit. The processing unit converts the two beams into electrical signals U1 and U2, then computes a first quantity R=U1/U2, determines the AC component (RAC) and the DC component (RDC) of the first quantity and deduces therefrom a second quantity S=RAC/RDC enabling the electric current to be measured to be determined.

Abstract: In a three-phase switchgear apparatus having two adjacent poles per phase, the inner pole of each side phase is equipped with a magnetic compensation circuit designed to optimize the current distribution between the two poles and of each side phase in balanced three-phase operation. This arrangement enables the currents flowing in the two poles of either of the side phases to be balanced, by specifically reducing the current intensity and temperature in the inner pole of the side phases.

Abstract: Photoreceptor circuit provided with a component, the photoreceptor surface comprising a first area able to operate in reflex mode and a second area with analog detection of position able to operate in proximity mode.

Abstract: Selector switches placed on the front panel of the trip device enable first protection parameters to be set. The trip device comprises communication means enabling second protection parameters to be set by remote setting. The trip device compares each first parameter with the corresponding second parameter and determines third protection parameters representative of the lower of the first and second parameters. The third protection parameters are taken into account by the trip device for protection against overloads and short-circuits and are displayed on the front panel of the trip device when setting of the parameters takes place or on request.

Abstract: The present invention relates to a vacuum cartridge, in particular for an electrical protection apparatus such as a switch or circuit breaker, said cartridge comprising an enclosure of appreciably cylindrical shape closed by two end-plates, two contacts extending axially inside the enclosure, at least one of which contacts called the movable contact is connected to an operating mechanism and is slidingly mounted between a closed position of the contacts corresponding to a rest position of the apparatus and a position in which the arcing contacts are separated and form an electric arc between them, separation of the contacts resulting in breaking of the electrical circuit, and a means for producing an axial magnetic field for diffusion of the arc in the arc formation area. According to the invention, this cartridge comprises means for speeding up cooling of the contact material in liquid form flowing on the contact surface of said arcing contacts during breaking.

Abstract: The device comprises means for detecting an unscheduled movement of the movable core of an electromagnet during a holding phase. For this, a control and regulation circuit monitors the current flowing in at least one coil of the electromagnet. When, during a holding phase, the current flowing in the coil is greater than a setpoint value and either remains so during a preset time or is increasing, an unscheduled movement is then considered as being detected and the device makes the electro-magnet switch to inrush phase with a much higher current.

Abstract: A proximity detector comprising a reference oscillator and a measurement oscillator the frequency of which depends on the proximity of an object, particularly a metal object.

Abstract: The present invention concerns an electric power transmission and distribution system including transmission components (10) each having several parallel, insulated transmission conductors (11) laid against each other, and the ends of which are connected by a terminal block (15) fitted with a tap-off device (14). This system includes at least one distribution component, having parallel distribution conductors (21) spaced apart from each other, and one at least of the two ends of which is connected to a tap-off device (14), with no additional means of electrical protection against current overloads. The cross-section of the distribution conductors (21) is smaller than the cross-section of the transmission conductors (11).

Abstract: Circuit breaker mechanism comprising a manually controlled part 40a acted upon by a knob 42 and a part 40c with an electromagnetic overcurrent tripping device 41 and a trip spring 65. The parts 40b, 40c act on a common lever 43 through a connecting rod 62 and a control lever 66 respectively. The part 40b is coupled to a lever 64 onto which the spring 65 exerts a torque, and also applies an opening torque to lever 66.

Abstract: The present invention relates to a multipolar electromagnetic switching module that is connected by line connections (t1, t2, t3) to a main multipolar electromagnetic switching device (AP) and by load connections (U, V, We U′, V′, W′) to at least one motor and having between said connections several power current lines (C1, C2, C3) fitted with switching poles the contacts of which are always alternately closed, and controlled by a switching electromagnet (E2) driven by an electric control circuit (CC), and characterized in that the switching poles (C1, C2, C3) and current lines are arranged to perform a motor control function such as reverser, star-triangle or distributor and in that the pole control assembly consisting of the switching electromagnet (E2) and the control circuit (Cc) is offset relative to the switching poles and load paths in a direction perpendicular to the rear fastening surface (P) of the module such that the width (L) of the module is reduced and more or less identical t

Abstract: A pole of a low-voltage limiting electrical power circuit breaker comprises a stationary contact defining a contact area, at least one movable contact finger and an arc extinguishing chamber. The finger is pivotally mounted on a movable support, itself linked to an opening mechanism. A spring biases the finger to a contact position. The lateral branches of a U-shaped magnetic circuit bound the contacts on each side, with interposed insulating side walls which form a passage between the contact area and the arc extinguishing chamber. This passage forms a constriction at the inlet of the chamber. The pole comprises in addition a receiving surface of an electric arc root, situated between the contact area and the constriction and electrically connected to the contact area and which is extended towards the inside of the chamber by a narrower part.

Abstract: The present invention relates to a detector 10 for monitoring rotation, in front of which passes a target 19 wherein it is required that the passage frequency thereof be monitored with respect to a normal passage frequency, comprising a sensor unit 11 connected to a microcontroller 20 which delivers a binary output signal 15. Detector 10 includes means 30 for conversing with the operator, connected to the microcontroller 20 in order to set the detector 10 to a working mode or learning mode, which learning mode enables the microcontroller 20 to measure the normal passage frequency and enables an operator to select an operating range from a plurality of predefined ranges, through the conversational means 30. The microcontroller 20 calculates from the selected operating range, a triggering frequency and a resetting frequency.

Abstract: A frame is equipped with joining parts formed by bipods which are equipped with positioning means in the intermediate common part for fixing of the girders. Each positioning means comprises at least one pair of bearing faces arranged in a V-shaped confining a corner-piece with an acute angle in which the girder of conjugate shape fits. An assembly screw performs progressive tightening of the girder onto the corner-piece of the bipod.

Abstract: A multipole electrical switchgear apparatus comprises a drive mechanism equipped with a pole shaft and a plurality of breaking modules. Each module comprises a vacuum cartridge moved by a movable rod articulated on a transmission lever. The pole shaft is linked to the transmission levers by means of a connecting rod. This common connecting rod gives the kinematic transmission system a great strength. Furthermore, it enables switchgear apparatuses having variable distances between breaking modules to be produced inexpensively, based on a standard pole shaft. Finally, it enables differentiation of the switchgear apparatuses to be delayed.

Abstract: A switchgear apparatus comprises a vacuum cartridge one contact of which is fixedly secured to a metal rod protruding out from the cartridge. A flexible metallic electrical connector designed to electrically connect the rod to a busbar is provided, at one of its ends, with a bored hole in which one end of the rod is inserted. The joint between the flexible electrical connector and the rod is achieved by means of a braze implementing a metallic filler compound having a low melting temperature, so as not to damage the cartridge when the brazing operation is performed.

Abstract: A breaking module for an electrical switchgear apparatus comprises a vacuum cartridge comprising a body and a support frame of the cartridge. The cartridge is provided with a metal rod movable in translation and driving a movable contact. A collar both performs radial positioning of the body of the cartridge with respect to the frame and constitutes a guide sheath of the rod. For fitting, the collar can be opened so as to insert the rod radially therein. Once the body of the cartridge has been encircled, the collar is inserted radially in guide grooves of the frame.