AUTOMATIC RE-ACTIVATION DEVICE Russian patent published in 2021 - IPC H02H3/06 H01H47/10 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, namely the protection of power supply devices from short circuit and providing uninterrupted power supply of automation actuators during transient electrical processes. The device contains a series-connected terminal “Input”, the first converter, normally closed fixed and movable contacts of the first switch, the terminal “Output”. The second converter is connected between the fixed open contact of the first switch and the “Common” terminal. The high-frequency current source is connected to the fixed open contact of the first switch through the normally closed contacts of the second switch. The control inputs of the first and second switch are combined and connected to the output of the D-trigger. The information output of the first and second converter is connected to the input of the first and second comparator, respectively, the input of the reference voltage of each of which is connected to the first and second reference voltage source. The output of the first comparator is connected to the input of the pulse generator, the output of which is connected to the input of the D-trigger. The first input of the logic element 2AND is connected to the output of the initial state setting circuit, the input of which is connected to the output of the power source. The input of the pulse expander is connected to the output of the second voltage comparator, and the output of the pulse expander is connected to the second input of the logic element 2AND.

EFFECT: ensuring the protection of the device from false triggering.

1 cl, 2 dwg