DEVICE AND METHOD FOR MEASURING ELECTRICAL CURRENT IN AN ELECTRICAL CONDUCTOR

DEVICE AND METHOD FOR MEASURING ELECTRICAL CURRENT IN AN ELECTRICAL CONDUCTOR

The disclosure relates to a device for measuring electrical current in an electrical conductor (2), the device comprising: a measuring circuit configured to be connected to the electrical conductor, the measuring circuit comprising: a resistor based measuring circuit comprising a resistor (10), a tr...

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Hauptverfasser: KLINGHULT, Gunnar, AGARDH, Kåre, ROSQVIST, Björn
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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creator KLINGHULT, Gunnar
AGARDH, Kåre
ROSQVIST, Björn
description The disclosure relates to a device for measuring electrical current in an electrical conductor (2), the device comprising: a measuring circuit configured to be connected to the electrical conductor, the measuring circuit comprising: a resistor based measuring circuit comprising a resistor (10), a transformer based measuring circuit comprising a current transformer (20) comprising a primary coil (20a), connected in series with the resistor (10) of the resistor based measuring circuit, a first inverter (12) configured to transform a first digital signal using a transfer function being an inverse of a transfer function representing the resistor based measuring circuit; a second inverter (22) configured to transform a second digital signal using a transfer function being an inverse of a transfer function representing the transformer based measuring circuits; and a signal combiner (5) configured to combine the transformed first and second digital signals, thereby providing a digital signal representing the electrical current in the electrical conductor. The disclosure also relates to a method for measuring electrical current in an electrical conductor.
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subjects MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title DEVICE AND METHOD FOR MEASURING ELECTRICAL CURRENT IN AN ELECTRICAL CONDUCTOR
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