The YH-8451BDR is a 3Y power part from Yihua Electronics. It is a 3-phase, AC/DC power module that can be easily connected with other Yihua AC/DC systems. It has a voltage rating of 380-1050VAC, a frequency range of 50-60Hz, and an output power of up to 25kW. It is made up of four parts: a main board, an LCD display, a signal board, and a transformer. The main board is responsible for power management with its built-in UPYH and MCU boards. The LCD screen allows the user to easily monitor status, parameters, and settings. The signal board facilitates communication with other AC/DC systems. The transformer is used to reduce voltage and output power. This 3Y power module can provide reliable and efficient power to a variety of applications.