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Method and Device for Measuring Electrical Quantities

US2015073734A1 · US · A1

Patent metadata
FieldValue
Publication numberUS-2015073734-A1
Application numberUS-201414484184-A
CountryUS
Kind codeA1
Filing dateSep 11, 2014
Priority dateSep 12, 2013
Publication dateMar 12, 2015
Grant date—

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A method and a device for measuring electrical quantities, at least voltage and current, preferably also power, in three-phase systems (L1, L2, L3), wherein, for the three phases (L1, L2, L3), the phase voltages U L1 , U L2 , U L3 ) and phase currents (I L1 , I L2 , I L3 ) are sensed by means of voltage and current sensors ( 2; 3 ), and corresponding voltage and current signals are evaluated in processing means ( 9 ) into measurement data (D) which are displayed on display means ( 21 ), wherein by means of the processing means ( 9 ) the relative phase positions of the voltage signals (U L1 , U L2 , U L3 ) as well as of the current signals (I L1 , I L2 , I L3 ) in comparison with a given phase sequence and therefrom the correctness or incorrectness of the connections of the voltage and current sensors ( 2; 3 ) to phase lines (L1, L2, L3) are determined, wherein corresponding display signals are output for the display means ( 21 ). Therein, preferably also an automatic correction of the measurement is provided.

First claim

Opening claim text (preview).

1 . A method for measuring electrical quantities, the method comprising: sensing phase voltages and phase currents in phase lines of a three-phase system by way of voltage and current sensors connected to the phase lines; and evaluating, by a processor, voltage and current signals that correspond to the sensed phase voltages and phase currents, to form corresponding measurement data that are displayed on a display, wherein said evaluating includes: comparing, by way of the processor, relat…

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What does patent US2015073734A1 cover?
A method and a device for measuring electrical quantities, at least voltage and current, preferably also power, in three-phase systems (L1, L2, L3), wherein, for the three phases (L1, L2, L3), the phase voltages U L1 , U L2 , U L3 ) and phase currents (I L1 , I L2 , I L3 ) are sensed by means of voltage and current sensors ( 2; 3 ), and corresponding voltage and current signals are evaluated in…
Who is the assignee on this patent?
Fluke Corp
What technology area does this patent fall under?
Primary CPC classification G01R21/133. Mapped technology areas include Physics.
When was this patent published?
Publication date Thu Mar 12 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).