| 摘要 |
Electrical quantity measuring device for energy transport lines, operatively associable to the cable of an electric line or equipment thereof, formed by a device for detecting a voltage signal provided with a through capacitor (TV) in metal collar form, arranged coaxially with said cable, connectable to a capacitive divider and a device for detecting a current signal provided with at least a current sensor obtained with a coil (TA) susceptible to being crossed by current due to inductive effect. The coil is obtained on at least one printed circuit board equipped with a central opening, and is formed by radial deposits provided on both faces of the printed circuit board and by electric connections arranged between the deposits of the two faces. Furthermore, an insulating material layer is provided for, placed to at least partially cover the printed circuit board and a metal screen is also envisaged, placed to at least partially cover the printed circuit board. TV and TA are axially assembled and are integrally incorporated in an insulating material matrix delimiting a through hole for the insertion of the cable.
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