| 摘要 |
<p>A power line (1) wherein an elongated enclosure (4) houses a first and a second conducting line (27, 23), a striplike base portion (63) made of ferromagnetic material, an electric contact portion (71) superimposed on the base portion (63), and a releasable connecting device (64, 72) for connecting the base portion and the electric contact portion. The releasable connecting device (64, 72) permits disconnection of the striplike base portion (63) in the event a portion of the electric contact portion (71) remains in the raised position following extinction of the magnetic field, so that the base portion (63) drops down and establishes a short-circuit connection, indicating a malfunction, between the first and second conducting lines (27, 23).</p> |
