Thyristor switching device TKEP

The device is designed for automatic load switching from the main power source to the backup power source in power supply systems of I category of AC voltage 380V.
Functionally, the device consists of two identical arms: if you look from the front side of the cabinet, the upper 3 BTK blocks are taken as the main arm (the first), and the lower ones are taken as the backup arm (the second).
The CBU and BTK units are interconnected by a serial CAN interface, through which all units are controlled and communicated. The code board determines whether the BTK belongs to a certain arm and a certain phase.
The main arm is connected to the main load power supply, and the backup arm to the backup power supply.
Each BTK contains an output voltage sensor, a valve conductivity sensor, a fusible link for backup short-circuit protection, an output current sensor, a fusible link breakage sensor, indicators displaying current and voltage output, and a switch....