| 摘要 |
<p>The invention relates to bushings and busbars that include a conductor (1, 1a, b) covered with an insulator (2, 2a, 2b) that dielectrically supports the difference in voltage created between the conductor and the structure (6) where it is located; and the inside of which includes an element configuring the electric field and a connection with the outside of the insulating covering (2, 2a, 2b) to achieve a capacitive coupling, the capacitive current of which flows to an electronic circuit that determines whether or not there is voltage in the conductor. It is characterized in that the element configuring the electric field includes a body of insulating material having dielectric properties that are not affected by temperature variations (8), preferably a ceramic material, to obtain a measurement of the module and phase of the conductor voltage, which is stable with respect to temperature.</p> |
