| 摘要 |
<p>The invention relates to an electric power meter (1) comprising a cut-off member (14), means for the downstream measurement of a downstream voltage at the terminals of an apparatus (4), and processing means (13) for driving the cut-off member between an open state and a closed state and acquiring measurements provided by the measurement means. According to the invention, the meter (1) comprises supply means (R6) for supplying a measurement voltage to the terminals of the apparatus when the cut-off member is open, impedance measurement means connected to the supply means for measuring an impedance (Z) of the apparatus (4), and at least one measurement switch (16) connected to a first measurement resistance (R4) of the downstream measurement means and controlled by the processing means (13) for selectively connecting and disconnecting the first measurement resistance (R4) and the supply means (R6) based on whether a downstream voltage measurement or an impedance measurement is controlled.</p> |
