Abstract: According to an example, an uninterruptible power supply is provided comprising a first input, a backup input, an output to provide output power, an inverter coupled to the first input, the backup input, and the output, a first sensor to detect a voltage at an inverter output, a second sensor to detect a voltage at the first input, a switch coupled between the first input and the output, and a controller coupled to the switch and the first and second sensors, and configured to determine a first voltage difference across the bypass switch using at least one of the first sensor or the second sensor, filter the first voltage difference, determine whether a value derived from the first filtered voltage difference exceeds a threshold, and output an indication of a failure of the bypass switch based on the value derived from the first filtered voltage difference exceeding the threshold.

Abstract: Motor overload protection device is equipped with a thermal monitor that can determine expected rotor temperature rise from rotor resistance estimates. The thermal monitor determines expected rotor temperature rise by using a correlation between rotor temperature rise computed from rotor resistance estimates, and motor thermal state estimates. The correlation can be derived by fitting a line to a plurality of points, with each point defined by an ordered pair composed of a rotor temperature rise estimate and a corresponding motor thermal state estimate, and determining a slope of the line. This rotor temperature slope can then be used by the thermal monitor to determine a rotor temperature rise given a rotor resistance estimate and a corresponding motor thermal state estimate. If the rotor temperature rise exceeds an expected rotor temperature rise by more than a predefined threshold, the thermal monitor issues an alarm and/or takes corrective actions in some embodiments.

Abstract: A method for testing capacitive current switching of a circuit breaker, including: realizing a capacitive current switching by the circuit breaker, measuring voltage at the terminals of the circuit breaker after the capacitive current switching, calculating the gradient of the measured voltage, determining whether there is at least one point of gradient whose amplitude exhibits an absolute value greater than a first predetermined threshold, and when such a point is determined, identifying the instant of appearance of the determined point and of the amplitude of variation of the voltage at that instant, as voltage drop.

Abstract: Techniques for notification concerning recall or notification of non-conformance of an industrial instrument product are provided. A module associated with the instrument communicates with the vendor of the instrument over a wide-area communications link or internet link. When the module receives an alert notice from the vendor pertaining to recall or non-conformance of the instrument, the module transmits the alert information to the customer or an associate of the customer having a responsibility for the instrument. The module may also cause the alert information and diagnostic, maintenance, or update information to be displayed on a display device of the instrument.

Abstract: An electrical switching device with separable contacts includes a switching apparatus including a fixed electrical contact and a mobile electrical contact that can be moved between a closing position and an opening position; a control lever mechanically coupled to the mobile electrical contact, the control lever being rotatable, about a first axis of rotation, between a first position and a second position; an anti-rebound lever arranged so as to move from a rest position to an opened-out position when the control lever reaches the second position. The anti-rebound lever engages a stop when it is in the opened-out position thereof and when the control lever is in the second position so as to prevent the control lever from leaving the second position.

Abstract: A prefabricated support comprises a one-piece body defining a reception housing intended to receive an electrical switching apparatus and also delimiting a passage in which electrical conductors are housed, the body comprising a separating wall, the wall and at least one side of the plate forming a lateral face of the support, the lateral face comprising at least one first fixing member and at least one second fixing member, each second fixing member being of a form complementary to the first fixing member, each first member and each second member being adapted to be engaged with, respectively, another second member and another first member.

Abstract: A method for securely registering a removable electrical device includes steps consisting in: a) prior to the installation of a new removable electrical device within an electrical system in order to replace a faulty removable electrical device, acquiring a first security certificate for the new device, this first certificate being signed by an authority known to the system; b) verifying the authenticity of the first acquired security certificate, this verification being carried out by the electronic control module; c) generating a second security certificate for the new removable electrical device, including a key generated by the electronic computer of the new device; d) obtaining a signature for the second security certificate from a trusted certification authority, the new device then being registered within the system only if this signature is obtained.

Abstract: Electrical protection systems and methods, of which an exemplary method comprises: measuring a voltage and an electric current in an electric link; calculating, repeatedly, from the measured values of current, a first moving average and a second moving average, the second moving average being calculated over a duration longer than the first moving average; comparing the measured voltage value with a predefined voltage threshold value; comparing the current value of the first moving average with the current value of the second moving average; and identifying a condition of trigger of the protection device when the measured voltage value is lower than the predefined voltage threshold value for a duration longer than a predefined duration threshold and when the current value of the first moving average is higher than the current value of the second moving average.

Abstract: The invention relates to a method for setting up a Remote Terminal Unit for social networking and to a Remote Terminal Unit. The Remote Terminal Unit having a configuration set (122) storing configuration data for a social network platform and participant set (123) storing a list of authorized participant accounts and participant permissions, and a dictionary set (124) storing requests, commands and associated tasks and task types. The RTU further has a controller (121) arranged for registering with the social network platform according to the configuration set (122), and creating and/or joining at least one participant group on the social network platform based on the participant set (123).

Abstract: Current sensors and associated measurement systems. A current sensor includes: an insulating substrate provided with a central opening; a Rogowski winding surrounding the central opening and including a first coil and a second coil which are superposed and electrically connected in series, the first coil and the second coil being wound around the substrate along a first contour line and a second contour line, respectively, each contour line defining, in the plane of the substrate, a contour in the shape of a quadrilateral centred on the central opening; wherein a length of the contour in the shape of a quadrilateral defined by the first contour line is greater than a length of the quadrilateral defined by the second contour line and a width thereof is smaller than a width of the quadrilateral defined by the second contour line.

Abstract: In a Boundaryless Control High Availability (“BCHA”) system (e.g., industrial control system) comprising multiple computing resources (or computational engines) running on multiple machines, technology for computing in real time the overall system availability based upon the capabilities/characteristics of the available computing resources, applications to execute and the distribution of the applications across those resources is disclosed. In some embodiments, the disclosed technology can dynamically manage, coordinate recommend certain actions to system operators to maintain availability of the overall system at a desired level. High Availability features may be implemented across a variety of different computing resources distributed across various aspects of a BCHA system and/or computing resources. Two example implementations of BCHA systems described involve an M:N working configuration and M:N+R working configuration.

Abstract: A method for managing power quality events in an electrical system includes processing electrical measurement data captured by an intelligent electronic device (IED) to identify at least one power quality event associated with one or more loads monitored by the IED. The IED and the loads are installed at respective locations in the electrical system. The method also includes determining an impact of the at least one identified power quality event on one or more of the loads, and using the at least one identified power quality event and the determined impact to generate a tolerance curve associated with the one or more of the loads. The tolerance curve characterizes a tolerance level of the loads to certain power quality events. The loads can include one or more loads “downstream” from the IED in the electrical system and/or one or more loads “upstream” from IED in the electrical system.

Abstract: A control device for a movable contact relative to a fixed contact of a vacuum bottle of an electrical switching device. The control device includes a principal mechanism for disconnection and connection of the contacts, of the mechanical energy accumulation type. The control device further includes an auxiliary disconnection-assistance mechanism arranged such as to accumulate mechanical energy when the movable contact is moved towards the connection position and such as to restore the mechanical energy thus accumulated in such a manner as to exert an additional disconnection force in the form of an impact tending to move the movable contact from the connection position towards the disconnection position when the movable contact is immobilized in the connection position despite the action of the principal disconnection force.

Abstract: A self-adaptive field device is disclosed having a repository, an identity register and a firmware framework having static firmware modules. Further disclosed is an industrial automation system of self-adaptive field devices, and a method for configuring such a system. The method includes booting each field device, evaluating each field device, and initialising each field device. The method may further include resource load balancing.

Abstract: A method for determining a digital voltage replica for a substation. The method includes obtaining a substation topology and generating a node model from the substation topology. The generated model represents each switchgear by a pair of two connectivity nodes. The method further includes obtaining switchgear status data and animating the node model. When the node model is animated, the method allows determining a reference node for a target connectivity node. In this manner, a digital voltage replica of a substation is obtained.

Abstract: At least one aspect disclosed herein is directed to a SCADA project analysis system. The system includes memory ad at least one processor coupled to memory. The processor is configured to receive information regarding a supervisory control and data acquisition (SCADA) system configured to monitor an industrial process, the information describing at least one first programmable device within the SCADA system, identify at least one analyzer from a plurality of analyzers based on the information, the at least one analyzer being configured to generate an assessment of the SCADA system based on the information, the assessment describing at least one capability of the SCADA system, execute the at least one analyzer to generate the assessment of the SCADA system based on the information, and provide the assessment to an external entity.

Abstract: A switching assembly intended to be joined onto a control assembly provided with an actuation member, the switching assembly comprising a body, an electrical circuit comprising two fixed contacts, the electrical circuit being able to be controlled both by a control switch of a normally-closed type and by a monitoring switch of a normally-open type, linked in series with the control switch. The monitoring switch makes it possible to monitor the correct secure attachment of the switching assembly onto the control assembly by keeping the electrical circuit open as long as the control assembly is mechanically disconnected from the switching assembly.

Abstract: Power systems, devices, and methods include a plurality of network interfaces for providing communication to, e.g., a management server, console, or user interface. One or more controllers coupled to power circuitry determine whether a preferred one of the network interfaces has connectivity, and directs communication over the preferred network interface in response to a determination that the preferred network interface does have connectivity. The controller directs communication over an alternate one of the network interfaces in response to a determination that the preferred network interface does not have connectivity.

Abstract: Method for determining a reliability state of an electrical network, the electrical network comprising a plurality of interconnected electrical devices, the method including the following steps: a) identifying an undesired event at a given location in the electrical network; b) traversing at least one subset starting from the given location; c) identifying an electrical device of the electrical network; d) determining a list of events of concern that are associated with the identified electrical device and could result in the undesired event; e) determining a total unavailability value associated with the identified electrical device; f) repeating steps b) to e); and g) calculating a reliability state of the electrical network on the basis of the total unavailability values respectively associated with the traversed electrical devices.