| 摘要 |
The invention relates to generation, conversion and distribution of electric energy, in particular to shields, boards and panels, parts thereof and accessories.A control system for a universal shield comprises a bracket and a contactor control panel in parallel to which a thyristor control panel is connected through a power switch of stator circuit. The bracket has two pair of reverser contacts, one pair of reverser contacts is connected with coils of contactor of the contactor panel, and a second pair of reverser contacts is connected in the thyristor control panel by means of an interposing relay. The system provides reliability growth by means of using separate circuits for control of contactor and thyristor panels in case of switching power feed circuit of a drive. |
