| 摘要 |
The present invention relates to a voltage detecting device of a power distribution board, by which electric shock is prevented by sensing a voltage applied to a trunk line of a high voltage distributing board, a low voltage distributing board, an electric motor control panel, and a panel board. The voltage detecting device of a power distribution board senses not only a high voltage applied to a trunk line of a high voltage distributing board but also a low voltage applied to a trunk line of a low voltage distributing board, an electric motor control panel, and a panel board. To this end, the voltage detecting device according to the present invention comprises: a voltage distributing unit connected with a first trunk line having a high voltage applied thereto, and distributing the voltage applied to the first trunk line into at least two voltages; a set voltage limit circuit unit provided with one of the voltages distributed in the voltage distributing unit or provided with a voltage applied from a connected second trunk line, and limiting the provided voltage to have a predetermined voltage volume; a rectifying unit for rectifying the voltage provided from the set voltage limit circuit unit; and a voltage dip unit for dropping the voltage provided from the rectifying unit to be equivalent to or lower than a predetermined voltage. |
