| 摘要 |
A device of combined protection of single-phase consumers consists of the first input divider, the first rectifier, power unit and the first indicator. The first rectifier output is connected to input of the first low frequency filter. Besides, the device contains aditionally a measuring current changer, a preliminary amplifier, the second input divider, the second and the third rectifier, the second and the third low frequency filter, a reset unit, a microcontroller, a switching unit, a reground, a charger, the second, the third and the forth indicator.
|
