| 摘要 |
<p>PURPOSE:To make it possible to reduce a circulating current in a cable shielding layer through composite three-phase factors in charging current, along with a small increase in potential in the shielding layer. CONSTITUTION:In a power feeding line laid to feed power to electric equipment, at least each one end of shielding layers 8u, 8v, 8w, and 6 of feeders and a neutral conductor are connected to the ground together in a place. In this case, since the cable shielding layers 8u, 8v, and 8w of the feeders are put in so-called cross-bond connection, an induced voltage is canceled out for each cross-bond section.</p> |
