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: 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 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: 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: The invention relates to an electrical work apparatus including an apparatus housing having an electric motor for driving a work tool, a control unit for putting the electric motor into operation, a handle housing having at least one handle for guiding the work apparatus, and a receiving cavity, realized in the handle housing, having an insertion opening for a battery pack for operating the electric motor. For the purpose of decoupling the battery pack in respect of vibration, the handle housing, together with the receiving cavity for the battery pack, is decoupled from the apparatus housing via one and the same antivibration element. A vibration gap is realized between the apparatus housing and the handle housing, wherein the antivibration element at least partly bridges the vibration gap.

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: 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 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 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 manually guided implement possesses a guide tube, wherein a first mass body is disposed on a first end of the guide tube, and a second mass body is disposed on a second end of the guide tube. One of the mass bodies has a housing, and the other of the mass bodies has a tool driven by a drive motor. A power transmission mechanism for driving the tool between the first and second ends of the guide tube is guided in the interior of the guide tube. A first antivibration element is disposed between the first end of the guide tube and the first mass body. The guide tube in the direction of the longitudinal central axis thereof includes a first rigid sub-portion and a second rigid sub-portion that are connected to one another at an abutment location by at least one second antivibration element.

Abstract: A method for energy management include steps of collecting data during a period of time, identifying data clusters within the data, categorizing the data clusters in the period of time, analyzing the data clusters, and assigning a classification to the period of time. Real time data can be compared to scheduled performance. Real time notifications can be provided to a user where energy is being used inefficiently. Energy efficiency of meters within a site can be ranked to identify meters where energy is being used inefficiently. A system is also provided for performing the method of the present disclosure.

Abstract: Systems and methods for analyzing waveform capture data in a power system are provided. In one aspect, a method for analyzing waveform capture data in a power system includes measuring electrical signals in the power system using a plurality of intelligent electronic devices (IEDs). At least one electrical event is detected in the power system based on the measured electrical signals from the plurality of IEDs, and in response to detecting the at least one electrical event, at least two waveform captures are generated on the plurality of IEDs as a result of the at least one electrical event. The at least two waveform captures are analyzed on at least one controller coupled to the plurality of IEDs to identify at least one associated characteristic/trait from the at least two waveform captures.

Abstract: A method for monitoring a power system includes receiving, from at least one component monitor in communication with components of the power system, a first set of readings for at least one of the power system components at an input of a central processing unit. The method also includes providing the first set of readings to be displayed in a graphical format on a user interface. A user selection of a portion of the first set of readings, and at least one user classification of the portion of the first set of readings, is received. Portions of the first set of readings are identified and removed based on the at least one user classification to generate a modified set of readings. The modified set of readings is classified by at least one characteristic, and the at least one characteristic is detected in a second set of readings.

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 monitoring a power system includes receiving, from at least one component monitor in communication with components of the power system, a first set of readings for at least one of the power system components at an input of a central processing unit. The method also includes providing the first set of readings to be displayed in a graphical format on a user interface. A user selection of a portion of the first set of readings, and at least one user classification of the portion of the first set of readings, is received. Portions of the first set of readings are identified and removed based on the at least one user classification to generate a modified set of readings. The modified set of readings is classified by at least one characteristic, and the at least one characteristic is detected in a second set of readings.

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: A hedge trimmer has at least one cutting blade and an internal combustion engine operatively connected to the at least one cutting blade so as to drive the at least one cutting blade reciprocatingly. The internal combustion engine has an exhaust gas muffler with an outlet for discharging exhaust gases from the exhaust gas muffler. A multi-part exhaust gas pipe is connected seal-tightly to the outlet of the exhaust gas muffler and connects the outlet of the exhaust gas muffler to an outlet opening where the exhaust gases exit from the hedge trimmer. The multi-part exhaust gas pipe has a plurality of pipe sections, including at least a first pipe section and a second pipe section, wherein the second pipe section is embodied separate from the first pipe section. At least one of the plurality of pipe sections is made of plastic material.

Abstract: A device identifies operating data of a motor-driven tool. The device includes an identifying and/or evaluating device, an operating data memory unit, a communication interface, a housing, and an elastic element. The housing accommodates an electrical energy storage device and has an open and closed condition. In the open condition, the electrical energy storage device is insertable or removable. In the closed condition, the elastic element is configured to fix the electrical energy storage device by applying pressure along the insertion and removal direction of the energy storage device. The force amounts to a value of the mass of the storage device multiplied by at minimum 1 N per g.

Abstract: A manually guided implement possesses a guide tube, wherein a first mass body is disposed on a first end of the guide tube, and a second mass body is disposed on a second end of the guide tube. One of the mass bodies has a housing, and the other of the mass bodies has a tool driven by a drive motor. A power transmission mechanism for driving the tool between the first and second ends of the guide tube is guided in the interior of the guide tube. A first antivibration element is disposed between the first end of the guide tube and the first mass body. The guide tube in the direction of the longitudinal central axis thereof includes a first rigid sub-portion and a second rigid sub-portion that are connected to one another at an abutment location by at least one second antivibration element.