Abstract: A circuit breaker failure protection relay includes an input circuit to which an opening command from a first circuit breaker is input, and a circuit breaker failure detection element configured to compare a magnitude of a current detection signal in a power system with a setting value to make a determination about an overcurrent. The circuit breaker failure detection element is capable of changing the setting value to a first value and a second value that is larger than the first value according to a switching signal. The circuit breaker failure protection relay is configured to, when the opening command is input and when the circuit breaker failure detection element determines that an overcurrent occurs, output an opening command for the second circuit breaker in a neighborhood of the first circuit breaker.

Abstract: In a fault waveform recording device, a first storage stores data detected in a power system, the data being up-to-date and indicating an electrical quantity during a first period, and halts the updating of the data stored in the first storage after a second period has elapsed since an abnormality detection time at which an abnormality in the power system is detected. The second period is shorter than the first period. First operation unit stores data in a first interval as is into a second storage, among the data of the first period stored in the first storage after the updating of the data stored in the first storage is halted, the first interval including the abnormality detection time, and decimates data in a second interval different from the first interval.

Abstract: A ground fault overvoltage relay device is configured to: determine whether or not a first condition is satisfied, the first condition being that at least two of line voltages between respective two phases are less than or equal to a first threshold value; determine whether or not a second condition is satisfied, the second condition being that a ratio between a minimum value of the line voltages between the respective two phases and a minimum value of the respective phase voltages is less than or equal to a second threshold value; determine whether or not a third condition is satisfied, the third condition being that the zero-phase voltage is greater than a third threshold value; and lock a ground fault detection output when the first condition is satisfied, or when the second condition is satisfied and the third condition is not satisfied.

Abstract: A circuit breaker failure protection relay includes an input circuit to which an opening command from a first circuit breaker is input, and a circuit breaker failure detection element configured to compare a magnitude of a current detection signal in a power system with a setting value to make a determination about an overcurrent. The circuit breaker failure detection element is capable of changing the setting value to a first value and a second value that is larger than the first value according to a switching signal. The circuit breaker failure protection relay is configured to, when the opening command is input and when the circuit breaker failure detection element determines that an overcurrent occurs, output an opening command for the second circuit breaker in a neighborhood of the first circuit breaker.

Abstract: In a fault waveform recording device, a first storage stores data detected in a power system, the data being up-to-date and indicating an electrical quantity during a first period, and halts the updating of the data stored in the first storage after a second period has elapsed since an abnormality detection time at which an abnormality in the power system is detected. The second period is shorter than the first period. First operation unit stores data in a first interval as is into a second storage, among the data of the first period stored in the first storage after the updating of the data stored in the first storage is halted, the first interval including the abnormality detection time, and decimates data in a second interval different from the first interval.

Abstract: A ground fault overvoltage relay device is configured to: determine whether or not a first condition is satisfied, the first condition being that at least two of line voltages between respective two phases are less than or equal to a first threshold value; determine whether or not a second condition is satisfied, the second condition being that a ratio between a minimum value of the line voltages between the respective two phases and a minimum value of the respective phase voltages is less than or equal to a second threshold value; determine whether or not a third condition is satisfied, the third condition being that the zero-phase voltage is greater than a third threshold value; and lock a ground fault detection output when the first condition is satisfied, or when the second condition is satisfied and the third condition is not satisfied.

Abstract: An electric fader drive unit includes a drive portion, a fader position control portion, and an electric fader control portion. The drive portion drives an electric fader by supplying drive power to the electric fader. The fader position control portion indicates a target position of the electric fader. The electric fader control portion receives an indication of the target position from the fader position control portion, and, when controlling the drive portion to move the electric fader to the target position, moves the electric fader to the target position by changing the drive power maintained at preparation drive power less than the minimum drive power that is the lowest drive power required for moving the electric fader to a predetermined drive power not less than the minimum drive power.

Abstract: An electric fader drive unit includes a drive portion, a fader position control portion, and an electric fader control portion. The fader position control portion detects a distance between a current position of the electric fader and a target position, indicates a high speed movement mode when the distance is not less than a predetermined value, and indicates a silent movement mode when the distance is less than the predetermined value. The electric fader control portion controls the drive portion to change the drive power to silent drive power not less than the minimum drive power that is the lowest drive power for moving the electric fader when the fader position control portion indicates the silent movement mode, and controls the drive portion to change the drive power to base drive power more than the silent drive power when the fader position control position indicates the high speed movement mode.

Abstract: A total nitrogen measurement apparatus comprising an ultraviolet lamp comprising: a light emission section and a holding section for holding the light emission section, the holding section being formed of a material not including iron; a reaction vessel having a space where the light emission section is to be inserted and a sample water is to be contained around the light emission section for converting nitrogen compounds in the sample water contained in the reaction vessel into nitrate ions by oxidative decomposition using ultraviolet rays from the light emission section; and a measurement section configured to perform absorbance measurement on the sample water including the nitrate ions.

Abstract: An electric fader drive unit includes a drive portion, a fader position control portion, and an electric fader control portion. The drive portion drives an electric fader by supplying drive power to the electric fader. The fader position control portion indicates a target position of the electric fader. The electric fader control portion receives an indication of the target position from the fader position control portion, and, when controlling the drive portion to move the electric fader to the target position, moves the electric fader to the target position by changing the drive power maintained at preparation drive power less than the minimum drive power that is the lowest drive power required for moving the electric fader to a predetermined drive power not less than the minimum drive power.

Abstract: An electric fader drive unit includes a drive portion, a fader position control portion, and an electric fader control portion. The fader position control portion detects a distance between a current position of the electric fader and a target position, indicates a high speed movement mode when the distance is not less than a predetermined value, and indicates a silent movement mode when the distance is less than the predetermined value. The electric fader control portion controls the drive portion to change the drive power to silent drive power not less than the minimum drive power that is the lowest drive power for moving the electric fader when the fader position control portion indicates the silent movement mode, and controls the drive portion to change the drive power to base drive power more than the silent drive power when the fader position control position indicates the high speed movement mode.

Abstract: When a controlled device receives a change command from a control device, the controlled device changes a real current memory, generates a change notification that includes first data indicative of the control device having transmitted the change command and second data indicative of the change result in response to the change command, and transmits the generated change notification to the plurality of control devices. Each control device receives a change notification from the controlled devices, changes a virtual current memory based on the second data of the change notification if the first data of the change notification does not indicate the control device. Each control device does not change the virtual current based on the second data included in the change notification if the first data indicates the control device.

Abstract: A total nitrogen measurement apparatus comprising an ultraviolet lamp comprising: a light emission section and a holding section for holding the light emission section, the holding section being formed of a material not including iron; a reaction vessel having a space where the light emission section is to be inserted and a sample water is to be contained around the light emission section for converting nitrogen compounds in the sample water contained in the reaction vessel into nitrate ions by oxidative decomposition using ultraviolet rays from the light emission section; and a measurement section configured to perform absorbance measurement on the sample water including the nitrate ions.

Abstract: In a mixer system including an editing device that edits a configuration of signal processing by designating a combination of a plurality of components and a DSP that processes audio signals in accordance with the signal processing configuration edited by the editing device, when the mixer engine does not store a predetermined enabling key, audio signal processing including a protected component in the mixer engine is disabled, and when the mixer engine stores the predetermined enabling key, the audio signal processing is enabled. Further, the editing device is permitted to edit a signal processing configuration including the protected component irrespective of storage of the enabling key in the mixer engine.

Abstract: In an apparatus having a display for supplying parameters to a mixing system, a first display control section controls the display to present a scene list containing identifications of each scene and configuration data of the mixing system specified by first specification data contained in each scene. A scene selection acceptance section accepts selection of a scene from the scene list presented on the display. A second display control section controls the display to present operation data of the mixing system specified by second specification data contained in the selected scene, such that the display presents each portion of the operation data. Each portion contains one option of the operation data specified by the second specification data in manner distinguishable from another option not specified by the second specification data.

Abstract: A controller for controlling display on an edit screen for performing edit using components each having nodes and wires connecting the nodes is configured to add, when there is a direction to add a wire for connecting the nodes, a wire according to the direction and set a display style of the added wire to the display style corresponding to the display style set for the kind of the nodes on both sides; when there is a direction to change the display style for one of the kinds of the node, the controller changes the display style of the directed kind according to the direction, while not changing the display style of the wire; and when there is a direction to change the display style of the wire, the controller changes the display style of the directed wire according to the direction.

Abstract: A digital mixer has a custom component specified by a configuration ID. Further, the same configuration ID is provided to another custom component for ensuring compatibility of scene data which is used for operating the custom component. When a custom component of the mixer configuration is edited, the edited custom component is provided with the same configuration ID as the initial custom component before the editing. Scene data of the initial custom component can be copied to scene data of the edited custom component or vice versa provided that their configuration IDs match with each other.

Abstract: A digital mixer has a custom component specified by a configuration ID. Further, the same configuration ID is provided to another custom component for ensuring compatibility of scene data which is used for operating the custom component. When a custom component of the mixer configuration is edited, the edited custom component is provided with the same configuration ID as the initial custom component before the editing. Scene data of the initial custom component can be copied to scene data of the edited custom component or vice versa provided that their configuration IDs match with each other.

Abstract: A digital mixer has a processor capable of executing a program to constitute an audio signal processing unit corresponding to various mixer configurations. Configuration ID is attached to each mixer configuration, and the same configuration ID is attached to the mixer configurations having compatibility between their scene data which is a data set of parameters for use in operation of the audio signal processing unit. When a mixer configuration is edited, the same configuration ID as that of the mixer configuration before editing is attached to the mixer configuration after editing. Under the condition that there is a match between the configuration ID of read source and the configuration ID of write destination, the scene data accompanying each mixer configuration is written from the mixer configuration of read source to the mixer configuration of write destination.