Abstract: Systems and methods according to these exemplary embodiments provide for methods and systems related to optical current sensors used to monitor standby power transformers, specifically fiber optical current and voltage sensors and, more particularly, to applications involving filters for use in such sensors, such as frequency tracking comb filters. According to one embodiment, a method for monitoring a connection condition of a stand by power transformer includes the steps of measuring a current flowing through a high voltage side of the standby power transformer using at least one optical current sensor disposed proximate to a current flow path of the high voltage side, using a comb filter to filter the measured current, determining whether the filtered, measured current is less than a predetermined threshold value; and generating an alarm indication that the high voltage side of the standby power transformer is unconnected.

Abstract: This electric motor includes a frame defining an internal volume and comprising a rotor and a stator, a primary cooling circuit comprising at least one primary conduit and in fluidic communication with the outside of the frame for circulating a gas stemming from the outside of the frame in the internal volume of the frame, a secondary cooling circuit extending in the internal volume of the frame and isolated from the outside of the frame, said secondary cooling circuit comprising at least one first cooling channel going through the rotor and at least one second cooling channel going through the stator, wherein it comprises at least one heat insulation channel interposed between the primary conduit of the primary cooling circuit and the second cooling channel of the secondary cooling circuit.

Abstract: Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), designed to be in mechanical and electrical contact with the other permanent contact (4, 3) only during an operation for opening or closing the pair. The end protection portion (3.2, 4.2) is made of a single transition metal having a melting temperature that is strictly higher than that of the main portion (3.1, 4.1) to which it is secured, or of an oxide or carbide of such a metal, or even of zinc oxide. For application in particular to high- or medium-voltage circuit breakers.

Abstract: The invention relates to a gearbox including a first shaft, a second shaft, an intermediate shaft transmitting the movement from the first shaft to the second shaft and a casing delimiting a chamber, the first shaft and the second shaft each extending at least partially outside the casing, the intermediate shaft being accommodated in the chamber and comprising a first gearing element cooperating with the first shaft and a second gearing element cooperating with the second shaft. The first shaft and the intermediate shaft are arranged at a first height, the second shaft being arranged at a second height lower than the first height, and the gearbox includes a splash tub containing a lubricant, the first gearing element being at least partially submerged in the splash tub.

Abstract: A device for regulating the supply to a photovoltaic converter, the device comprising: a laser source (2); a photovoltaic converter (6) that feeds a DC-DC converter (8); circuit (100) for regulating the input impedance of said DC-DC converter (8) as a function of the operating voltage (Us) of the photovoltaic converter (6) and of its no-load voltage (Us0); and circuit (42) for measuring an output voltage of the DC-DC converter (8) and for producing a regulation signal (SR) for regulating the laser source.

Abstract: The gap filling device includes a movable ramp that is movable in a horizontal direction between a retracted position within a housing arranged under a floor of the rail vehicle, and a deployed position extending out of the housing. The ramp further has an upper surface that is accessible in the deployed position. The ramp includes lateral flanged edges extending over at least a portion of the length of the ramp, with each being movable between a first position, in which this lateral flanged edge extends vertically projecting outwards in relation to the upper surface of the ramp up to a first height, and a second position, in which the lateral flanged edge extends up to a second height that is lower than the first height.

Abstract: A method for automatically validating data against a predefined data specification, includes: a) acquiring data to be validated (2), the data including a plurality of test objects, b) acquiring a test database (4) including a plurality of test files each defining a test scenario, c) acquiring a predefined data specification (6) against which the test objects must be validated, d) automatically generating a plurality of test scripts (8), from the acquired test files and using relevant data from the test objects of the acquired predefined data specification, e) for each generated test script, executing the test script (10) on the test objects, and f) automatically generating a test report (12) including a result of each executed test case.

Abstract: A driver cabin for an urban railway vehicle, the driver cabin extending in a longitudinal driving direction and including: a cabin chassis including at least one main shock-absorbing area having a longitudinal extend defined between a front plane oriented transversally to the longitudinal driving direction and a rear plane oriented transversally to the longitudinal driving direction, the main shock-absorbing area being able to deform in case of a shock between an initial state and a shock-absorbed state, so that in the shock-absorbed state the longitudinal extend of the main shock-absorbing area is reduced about a predefined compression distance; an electrical equipment compartment storing at least one stiff electrical element carrying electronic components. The electrical equipment compartment is located inside the main shock-absorbing area.

Abstract: An end underframe comprises a headstock assembly and a bolster assembly and is made out of a single material which consists of cold rolled austenitic stainless steel.

Abstract: A vibration monitoring system includes an acoustic device that outputs an analog signal to a fiber cable for calibration and location verification. The acoustic device utilizes GPS or communication from wayside bungalow equipment to verify GPS location or real-time clock information. The wayside bungalow contains communication equipment that interfaces with the acoustic device and relays health information to a sensing processor. The sensing processor is configured to detect the acoustic signal output by the acoustic device at a known location and verifies that the cable and device have not moved location by comparing the signal level received against a threshold stored in memory. When the threshold is exceeded, the sensing processor sends an alert that the fiber optic cable or acoustic device at the location have changed.

Abstract: The rotation device (10) comprises means for locking the seat in extreme angular positions, comprising a movable abutment (23) carried by the seat (8), and interacting with a complementary fixed abutment (25) when the seat is in one of its extreme angular positions. The movable abutment (23) may be moved between a locked position in which it abuts the fixed abutment (25), and an unlocked position in which it is above the fixed abutment (25). The device (10) comprises means for unlocking the seat, wherein it comprises at least one pneumatic control member and pneumatic means (30) for driving the movable abutment (23) from its locked position to its unlocked position when the control member is actuated.

Abstract: This system includes a ground ATC and an on board ATC, which is switched from an “active” mode toward a “standby” mode and vice versa by a wake-up unit. In the “standby” mode, only the following components remain powered: odometry device; a main computer; a radio communication device between the on board ATC and the ground ATC; the wake-up unit. The main computer is programmed so as, in the “standby” mode, to verify that the movement of the train measured by the odometry device from the switching from the “active” mode to the “standby” mode is zero and, in the affirmative, to send the ground ATC an instantaneous position of the train using the radio communication device.

Abstract: A bogie frame for a railway vehicle includes at least two stringers. Each of the stringers has two flanks and at least one central core linking the two flanks to each other. The two flanks and the central core of each stringer are each formed from a cut metal sheet that is substantially planar and not folded. The vehicle also includes at least one transverse tube linking the two stringers to each other.

Abstract: This assembly, which includes a ground level power supply system of the type using conduction, including conductive tracks arranged on a roadway, and an electric vehicle, capturing electric energy from said tracks it moves on the roadway, is characterized in that the power supply system includes a ground level antenna, configured so as to have a constant radiation chart along a longitudinal axis of the roadway and emitting a positioning signal, and in that the electric vehicle includes an on board antenna and an on board module, connected to the on board antenna and capable of determining a lateral position of a center of the on board antenna relative to the longitudinal axis from the positioning signal captured by the on board antenna.

Abstract: A carrier for one or several electrically conductive tracks of a ground electric feeding system for a motor vehicle in the form of a strip of electrically insulating elastomeric material, comprising a substantially planar electric feeding surface of the land vehicle, provided with one or several longitudinal grooves, each groove being intended to receive a conductive track, and a surface for securing to a roadway, opposite the electric feeding surface. The carrier has a rectangular cross-section and the electric feeding surface and the securing surface form the long sides of said rectangle.

Abstract: The lighting management device comprises a variable lighting system which includes: at least one exterior light sensor, that is capable of measuring the characteristics of the exterior light outside the vehicle, and at least one interior image capture device, that is capable of capturing images within the interior of the compartment; and a control unit for controlling the lighting system, configured so as to adjust the lighting in the compartment based on the brightness of the exterior light measured outside the vehicle and the images captured within the interior of the compartment.

Abstract: Circuits comprising at least one energy storage device, a resistor and switch arranged in series with the resistor are described. The energy storage device is arranged in parallel with the series connection of the switch and the resistor, and the switch is arranged to selectively switch the resistor into a parallel connection to the energy storage device. In some examples, the switch comprises a series connection of semiconductor switching elements. In some examples, the circuit may comprise a sub-module for use in a multilevel modular converter.

Abstract: An automated signaling equipment inspection system is provided. The system includes signaling equipment, a LiDAR imaging device permanently installed close to the signaling equipment at a position and with an orientation allowing complete imaging of the orientation and configuration in space of the signaling equipment and of any potential movement of the signaling equipment during its operation, an image data processing device for detecting a non-conformity of the signaling equipment, and a reference image database storing reference image data of the signaling equipment. The LiDAR imaging device is configured to scan the signaling equipment to obtain real image data thereof. The image data processing device is configured to detect a non-conformity of the signaling equipment by comparing the real image data with reference image data taken from the reference image database.

Abstract: The railway vehicle comprises at least one end car, each arranged at a respective end of the railway vehicle, and, for each end car, a first car adjacent to this end car, and at least one second car, one of which is adjacent to the first car. Each second car comprises a second structural body. Each first car comprises a first structural body substantially identical to the second structural body of each second car, and a structural extension part attached on the first structural body and intended to be connected to the adjacent end car.

Abstract: This infrastructure includes a network MPLS; first and second groups of access points associated with each section of the track; first and second modems, on the train, communicating with access points of the first and second groups. The network includes pairs of local switches, each associated with a section of the track and including first and second local switches for communication with, respectively, the first and second groups of access points of the associated section, and first and second central switches, the switches being in series with one another and implementing a service for defining paths between each central switch and each local switch so the path between the first central switch and the first local switch of a pair and the path between the second central switch and the second local switch of this pair correspond to separate portions of the ring formed by the network.