Abstract: A system for diagnosing circuit protection device field issues includes a remote computer system and a diagnostic circuit protection device installed at a customer location, wherein the circuit protection device includes a processor configured to execute a number of routines, a plurality of sensors structured to sense power circuit information, a memory accessible by the processor, and a communications module coupled to the non-volatile memory. The routines are structured to input sensed power circuit information and determine trip information for one or more trip cycles and cause the stored power circuit information and trip information to be transmitted to the remote computer system by the communications module over a network for storage and subsequent access for diagnostic purposes.

Abstract: A system for diagnosing circuit protection device field issues includes a remote computer system and a diagnostic circuit protection device installed at a customer location, wherein the circuit protection device includes a processor configured to execute a number of routines, a plurality of sensors structured to sense power circuit information, a memory accessible by the processor, and a communications module coupled to the non-volatile memory. The routines are structured to input sensed power circuit information and determine trip information for one or more trip cycles and cause the stored power circuit information and trip information to be transmitted to the remote computer system by the communications module over a network for storage and subsequent access for diagnostic purposes.

Abstract: A system for diagnosing circuit protection device field issues includes a remote computer system and a diagnostic circuit protection device installed at a customer location, wherein the circuit protection device includes a processor configured to execute a number of routines, a plurality of sensors structured to sense power circuit information, a memory accessible by the processor, and a communications module coupled to the non-volatile memory. The routines are structured to input sensed power circuit information and determine trip information for one or more trip cycles and cause the stored power circuit information and trip information to be transmitted to the remote computer system by the communications module over a network for storage and subsequent access for diagnostic purposes.

Abstract: A system for diagnosing circuit protection device field issues includes a remote computer system and a diagnostic circuit protection device installed at a customer location, wherein the circuit protection device includes a processor configured to execute a number of routines, a plurality of sensors structured to sense power circuit information, a memory accessible by the processor, and a communications module coupled to the non-volatile memory. The routines are structured to input sensed power circuit information and determine trip information for one or more trip cycles and cause the stored power circuit information and trip information to be transmitted to the remote computer system by the communications module over a network for storage and subsequent access for diagnostic purposes.

Abstract: An arc fault and/or ground fault circuit interrupter includes an operating mechanism structured to open and close separable contacts, a trip mechanism cooperating with the operating mechanism to trip open the separable contacts, a test button structured to test the operating mechanism, an indicator, and a controller structured to configure a setting of the circuit interrupter and operate the indicator to indicate the setting in response to an actuation of the test button.

Abstract: An apparatus for repeatably generating electrical arcs for testing an electrical switching device, such as an arc fault circuit interrupter, includes a stationary electrode and a movable electrode that is moved along a path of travel by an electromechanical device under the control of a controller that receives data from either a current measuring device or a voltage measuring device to detect the initiation of an arc. The movable electrode is caused to first make physical contact with the stationary electrode, and then is moved away from the stationary electrode until an arc is detected. Additionally, the movable electrode may be moved towards and away from the stationary electrode according to a test profile to control the magnitude of the randomness of the arc.

Abstract: An arc fault and/or ground fault circuit interrupter includes an operating mechanism structured to open and close separable contacts, a trip mechanism cooperating with the operating mechanism to trip open the separable contacts, a test button structured to test the operating mechanism, an indicator, and a controller structured to configure a setting of the circuit interrupter and operate the indicator to indicate the setting in response to an actuation of the test button.

Abstract: An apparatus for repeatably generating electrical arcs for testing an electrical switching device, such as an arc fault circuit interrupter, includes a stationary electrode and a movable electrode that is moved along a path of travel by an electromechanical device under the control of a controller that receives data from either a current measuring device or a voltage measuring device to detect the initiation of an arc. The movable electrode is caused to first make physical contact with the stationary electrode, and then is moved away from the stationary electrode until an arc is detected. Additionally, the movable electrode may be moved towards and away from the stationary electrode according to a test profile to control the magnitude of the randomness of the arc.

Abstract: A fault detector processes half cycles of current in variable frequency ac power systems by weighting half cycle magnitude values by the period of the half cycle. Time attenuated accumulations of the weighted half cycle peak values exceeding a first threshold for short delay protection, and of weighted positive differences between the peak values of successive half cycles and the preceding half cycles for a selected period of time after a peak value exceeds a second threshold for arc faults, generate trip signals when they reach specified levels.

Abstract: A fault detector processes half cycles of current in variable frequency ac power systems by weighting half cycle magnitude values by the period of the half cycle. Time attenuated accumulations of the weighted half cycle peak values exceeding a first threshold for short delay protection, and of weighted positive differences between the peak values of successive half cycles and the preceding half cycles for a selected period of time after a peak value exceeds a second threshold for arc faults, generate trip signals when they reach specified levels.

Abstract: Arc faults in ac electric power systems including aircraft 400 Hz and other such ac electrical systems are detected by an arc fault detector generating a time attenuated cumulative sum of amounts by which the current in each most recent cyclic interval of current, preferably each half cycle, exceeds the magnitude of the current in the immediately preceding cyclic interval in absolute magnitude after a first cyclic interval in which the current exceeds a selected arming magnitude. Preferably, the magnitude detected by a peak detector is used, but alternatively differences in the average magnitude or the rms magnitude between half cycles can be accumulated. When the cumulative sum reaches a preset value, an arc fault indication is generated. The time cumulative sum is cleared if it decreases to a preset value and the selected arming current must be exceeded again to reinitiate generation of the time attenuated cumulative sum.