| 摘要 |
PURPOSE:To sharply reduce thyristor switch elements. CONSTITUTION:Thyristor switch elements Sh11-Sh13 are connected to three-phase distribution lines U, V, and W, with the polarities directed in one direction. The thyristor switch elements Sh11-Sh13 are ignited by the gate signals form a controller CNL. The controller CNL sends out a gate signal when the current on load side from a current transformer CT becomes a preset value or more. |
