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CIRCUITO CONDIZIONATORE, GRUPPO E SISTEMA PER LA MISURAZIONE DI UN SEGNALE ELETTRICO

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  • Title:
    CIRCUITO CONDIZIONATORE, GRUPPO E SISTEMA PER LA MISURAZIONE DI UN SEGNALE ELETTRICO
  • Author: Gallinelli, Francesco ; Liccardo, Annalisa ; Svaluto Moreolo, Delio
  • Subjects: MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; TESTING
  • Description: Conditioner circuit (1) of an electrical signal configured to be connected between a detection circuit (100), which is in turn in electromagnetic connection with a conductor cable (L1, L2, L3, 2) of an electrical distribution network through which an alternating current l(t) to be measured flows, and having at least one first signal output (101) and at least one second signal output (102), and at least one meter apparatus (200), the meter apparatus (200) having at least one signal input (201) and at least one signal output (202) and being configured to receive in input an current electrical signal (i1(t), i2(t), i3(t), i(t)) and to measure, based on that current electrical signal (i1(t), i2(t), i3(t), i(t)) received at the input, the alternating current (l1(t), I2(t), l3(t), l(t)) flowing through the conductor cable (L1, L2, L3, 2) of the electrical distribution network as well as, based on the supply voltage provided at its ends, the respective electrical energy. The conditioning circuit (1) comprises a signal amplifier stage (3), comprising a first signal input (31), a second signal input (32) and a signal output (33). The amplifier stage (3) is configured to receive in input, at its first signal input (31), a first voltage signal v1(t) output by the detection circuit (100) at the first output signal (101) thereof and a second voltage signal v2(t) output from the detection circuit (100) at the second signal output (102) thereof, amplify the difference between the first voltage signal v1(t) and the second voltage signal v2(t) thus received, and output a corresponding amplified voltage signal V(t), at the signal output (33). The conditioning circuit 1 also comprises a voltage-to-current converted stage (4), including a first signal input (41), a second signal input (42) and a signal output (43). The voltage-to-current converter stage (4) is configured to receive in input, at its first signal input (41), the amplified voltage signal V t), convert the amplified voltage signal V(t) into a current signal (i1(t), i2(t), i3(t), i(t)), and output the current signal (i1(t), i2(t), i3(t), i(t)) thus converted, at its signal output (43), wherein the converted current signal (i1(t), i2(t), i3(t), i(t)) is comprised within a current operating range for the meter apparatus (200).
  • Creation Date: 2022
  • Language: Italian
  • Source: esp@cenet
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