| 摘要 |
A device relates to electric engineering. The device comprises three phase conductors A, B and C, street light conductor D, zero conductor N, photo sensor, bidirectional triode thyristors, a lighting lamp; first bidirectional triode thyristor connects zero conductor N and street lighting conductor D; second bidirectional triode thyristor connects phase C and street lighting conductor D; the lighting lamp is connected to street lighting conductor D and zero conductor; in addition, a power unit, a microcontroller, a switching unit, a bidirectional triode thyristor and a voltage sensor are incorporated; the power unit is connected to phase C and zero conductor N; first output of the power unit is connected to first input of the switching unit, outputs of which are connected to control inputs of first and second bidirectional triode thyristors; power unit second output is connected to microcontroller second input, output of which is connected to switching unit second input; photo sensor is connected to microcontroller first input; third bidirectional triode thyristor is connected to street lighting conductor D and zero conductor N, a control unit is connected to phase C and zero conductor N, output of the control unit is connected to control input of third bidirectional triode thyristor; voltage sensor is connected to street lighting conductor D and zero conductor N due to additional connection of street lighting conductor D to zero conductor for every support. Application of the said construction extends functional capabilities of the five-wire electric network automatic control device due to connection of street lighting conductor to zero conductor for every support. |
