Abstract: A handheld work apparatus includes a motor, a transmission shaft, a tool, a guide tube, a housing, and a first anti-vibration element. The motor via the transmission shaft drives the tool. The transmission shaft is received in the guide tube. The motor is disposed in the housing. The tool is disposed on a front longitudinal end of the guide tube. The housing is disposed on the rear longitudinal end of the guide tube. The housing at least partially encompasses the guide tube, wherein the guide tube projects from the housing. The first anti-vibration element is disposed such that it acts in a vibration-decoupling manner between the housing and the guide tube. The first anti-vibration element is disposed on that side of the motor facing the tool. The handheld work apparatus includes a second anti-vibration element connecting the motor to the housing in an at least indirectly vibration-decoupled manner.

Abstract: In a method and system, voltage and/or current signals on an electrical/power system is monitored. A power event is identified from the monitored voltage and/or current signals. In response to event identification, waveforms of the monitored voltage and/or current signals are captured. Energy-related signals are calculated and extracted from pre-event measurements, event measurements and post-event measurements using the captured waveforms. Additional information associated with the event is identified and calculated by comparing (a) the calculated and used energy-related signals from pre-event measurements, with (b) the calculated and used energy-related signals from post-event measurements.

Abstract: A method of analyzing events for an electrical system includes: receiving event stream(s) of events occurring in the electrical system, the events being identified from captured energy-related signals in the system; analyzing, an event stream(s) of the events to identify different actionable triggers therefrom, the different triggers including a scenario in which a group of events satisfies one or more predetermined triggering conditions; analyzing, over time, the different actionable triggers to identify a combination of occurring and/or non-occurring actionable triggers which satisfies a predefined trigger combination condition and an analysis time constraint; and in response to the observation of the combination, taking one or more actions to address the events.

Abstract: A method for evaluating a building signature operational model (BSOM) associated with a building signature intelligent electronic device (BSIED) includes processing building signature operational data (BSOD) on a cloud-connected central processing unit to identify the BSIED from which the BSOD was received, and to determine if a current BSOM associated with the BSIED, and used by the BSIED to generate the BSOD, needs to be updated. In response to determining that the current BSOM needs to be updated, a new BSOM is selected for the BSIED from a BSOM library based, at least in part, on one or more characteristics associated with the BSIED. The new BSOM is transmitted to the BSIED for installation on the BSIED.

Abstract: A method for monitoring energy-related data in an electrical system includes processing energy-related data from or derived from energy-related signals captured by at least one intelligent electronic device in the electrical system to identify at least one variation/change in the energy-related signals. The method also includes determining if the at least one identified variation/change meets a prescribed threshold or thresholds, and in response to the at least one identified variation/change meeting the prescribed threshold or thresholds, characterizing and/or quantifying the at least one identified variation/change.

Abstract: A method for analyzing power quality events in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured by at least one of a plurality of metering devices in the electrical system to generate or update a plurality of dynamic tolerance curves. Each of the plurality of dynamic tolerance curves characterizes a response characteristic of the electrical system at a respective metering point of a plurality of metering points in the electrical system. Power quality data from the plurality of dynamic tolerance curves is selectively aggregated to analyze power quality events in the electrical system.

Abstract: Systems and methods for identifying and managing stress conditions, risk state or aging state associated with capacitors associated with electrical equipment in an electrical power system are disclosed herein. In one aspect, a method for identifying and managing stress conditions, risk state or aging state associated with at least one capacitor includes detecting at least one of motion of and sounds associated with the at least one capacitor, and analyzing at least the detected at least one of motion of and sounds associated with the at least one capacitor to identify possible stress conditions, risk state or aging state associated with the at least one capacitor and associated components. In response to identifying possible stress conditions, risk state or aging state, probable impacts of the possible stress conditions, risk state or aging state on the at least one capacitor and associated components may be determined.

Abstract: A method of analyzing events for an electrical system includes: receiving event stream(s) of events occurring in the electrical system, the events being identified from captured energy-related signals in the system; analyzing, an event stream(s) of the events to identify different actionable triggers therefrom, the different triggers including a scenario in which a group of events satisfies one or more predetermined triggering conditions; analyzing, over time, the different actionable triggers to identify a combination of occurring and/or non-occurring actionable triggers which satisfies a predefined trigger combination condition and an analysis time constraint; and in response to the observation of the combination, taking one or more actions to address the events.

Abstract: A method for automatically identifying, analyzing and reducing extraneous waveform captures (WFCs) includes capturing at least one energy-related waveform in an electrical system using at least one waveform capture device. The at least one captured energy-related waveform is analyzed to determine whether the at least one captured energy-related waveform meets the criteria of being considered an extraneous WFC, a partially extraneous WFC, a redundant WFC, or a provisional WFC. In accordance with some embodiments of this disclosure, one or more actions are performed in response to determining the at least one captured energy-related waveform meets the criteria of being considered an extraneous WFC, a partially extraneous WFC, a redundant WFC, or a provisional WFC.

Abstract: In accordance with an embodiment, a method and system are provided to create and analyze grouped events. The method and system involve obtaining, at a network node, event data of measured real events detected at one or more locations of a monitored system according to a first criterion. The event data for each real event defines one or more parameters/dimensions of the real event. The method and system further involve aggregating the detected real events into groups according to at least one or more parameters/dimensions of the detected real events, and analyzing one or more of the aggregated groups of detected events to identify conditions on the monitored system or take action when a condition is identified from the one or more aggregated groups of tracked events. The tracked real events may include an alarm event as well as a system event.

Abstract: A blower unit for a portable handheld blower apparatus has a housing section and a tubular receiving space, formed in the housing section, with a first axial end and a second axial end and with a longitudinal center axis. Arranged in the receiving space of the housing section is an axial blower for generating a blower air flow, the axial blower being driven by a drive motor. The receiving space has an intake opening at its first axial end and a discharge opening at its second axial end. In order to reduce operating noise, an air guide plate is arranged at an axial distance in front of the intake opening, the air guide plate having external dimensions that are greater than the external dimensions of the intake opening. An annular gap that supplies intake air is formed between the air guide plate and an outer periphery of the housing section.

Abstract: A method for analyzing power quality events in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured by at least one metering device in the electrical system to generate at least one dynamic tolerance curve. Each dynamic tolerance curve of the at least one dynamic tolerance curve characterizes a response characteristic of the electrical system at a respective metering point in the electrical system. The method also includes analyzing the at least one dynamic tolerance curve to identify special cases which require further evaluation(s)/clarification to be discernable and/or actionable. The at least one dynamic tolerance curve may be regenerated or updated, and/or new or additional dynamic tolerance curves may be generated, to provide the further clarification. One or more actions affecting at least one component in the electrical system may be performed in response to an analysis of the curve(s).

Abstract: Systems and methods for analyzing alarms to address electrical system issues are disclosed herein. In one aspect, a method for analyzing alarms to address electrical system issues includes processing electrical measurement data from or derived from energy-related signals captured or derived by at least one intelligent electronic device in the electrical system to identify at least one of: event(s) in the electrical system, alarm(s) triggered in response to the identified event(s), and cause(s) and/or origin(s) of the identified event(s) and/or identified alarm(s).

Abstract: In a method and system, voltage and/or current signals on an electrical/power system is monitored. A power event is identified from the monitored voltage and/or current signals. In response to event identification, waveforms of the monitored voltage and/or current signals are captured. Energy-related signals are calculated and extracted from pre-event measurements, event measurements and post-event measurements using the captured waveforms. Additional information associated with the event is identified and calculated by comparing (a) the calculated and used energy-related signals from pre-event measurements, with (b) the calculated and used energy-related signals from post-event measurements.

Abstract: Systems and methods for reducing alarm nuisance behaviors in an electrical system are disclosed herein. In one aspect, a method for reducing alarm nuisance behaviors includes processing electrical measurement data from or derived from energy-related signals captured or derived by at least one intelligent electronic device in the electrical system to identify events in the electrical system, and alarms triggered in response to the identified events and/or other events in or related to the electrical system. Information related to at least the identified events and the identified alarms may be aggregated, and the aggregated information may be analyzed to identify at least one alarm nuisance behavior. At least one action may be taken or performed based on or in response to the at least one identified alarm nuisance behavior.

Abstract: Systems and methods for analyzing alarms to characterize electrical system issues are disclosed herein. In one aspect, a method for analyzing alarms to characterize electrical system issues includes processing electrical measurement data from or derived from energy-related signals captured or derived by at least one intelligent electronic device in the electrical system to identify events in the electrical system, and alarms triggered in response to the identified events. Information related to at least the identified events and/or the identified alarms may be aggregated, and the aggregated information may be analyzed to determine issue(s) associated with the electrical system, and origin(s), source(s), cause(s), transitions/evolutions and/or interrelationship(s) of the issue(s).

Abstract: In a method and system, voltage and/or current signals on an electrical/power system is monitored. A power event is identified from the monitored voltage and/or current signals. In response to event identification, waveforms of the monitored voltage and/or current signals are captured. Energy-related signals are calculated and extracted from pre-event measurements, event measurements and post-event measurements using the captured waveforms. Additional information associated with the event is identified and calculated by comparing (a) the calculated and used energy-related signals from pre-event measurements, with (b) the calculated and used energy-related signals from post-event measurements.

Abstract: A method for managing smart alarms in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured or derived by at least one intelligent electronic device of a monitoring and control system to identify at least one of power events in the electrical system, or alarms triggered in response to any identified power events. Information related to the identified power events and the identified alarms may be aggregated, and relevant event and/or alarm management groups and/or relevant event and/or alarm periods may be identified from the aggregated information. One or more actions may be triggered, avoided or avoid triggering in response to the identified event management groups and/or the identified event and/or alarm periods. Systems for managing smart alarms are also provided herein.

Abstract: A method for evaluating a building signature operational model (BSOM) associated with a building signature intelligent electronic device (BSIED) includes processing building signature operational data (BSOD) on a cloud-connected central processing unit to identify the BSIED from which the BSOD was received, and to determine if a current BSOM associated with the BSIED, and used by the BSIED to generate the BSOD, needs to be updated. In response to determining that the current BSOM needs to be updated, a new BSOM is selected for the BSIED from a BSOM library based, at least in part, on one or more characteristics associated with the BSIED. The new BSOM is transmitted to the BSIED for installation on the BSIED.

Abstract: The disclosure relates to a chain saw having a housing and a drive motor. The drive motor by way of a chain drive sprocket drives a saw chain guided on a guide bar. The guide bar is held on the housing by way of a releasable fastening arrangement and by way of a tensioning device is displaceable in the direction of the longitudinal axis of the guide bar in relation to the housing while the fastening arrangement is released. The saw chain has a slack side between the chain drive sprocket and the guide bar. The chain saw includes a chain lifting device which is configured separately from the tensioning device. The chain lifting device is configured for deflecting the saw chain in the direction away from the longitudinal axis of the guide bar.