22
aTCA-80606PA
7.3 AC Power Supply Units (PSUs)
The AC PSUs with front-to-back airflow are hot-pluggable from the front side. The Shelf
Manager can monitor the PSUs through the IPMC of the fan tray. The fan tray access the
PSUs through an I2C bus to CAN bus bridge on the Power Distribution Board, since the
PSUs only support CAN bus communication.
Table 8: Basic Specifications for the PSUs
230 V Operation
Input Voltage nominal
230 VAC
Input Voltage Range max.
176V AC – 290V AC
Input Frequency Range
45 Hz - 66 Hz
Output Voltage
53.5V DC
Input Current
< 17 A
Output Power
3000 W
115 V Operation
Input Voltage nominal
115 VAC
Input Voltage Range max.
85V AC – 175V AC
Input Frequency Range
45 Hz - 66 Hz
Output Voltage
53.5V DC
Output Current
< 17 A
Output Power
1250 W
See Huawei R4850XX Series Data Sheet for detailed information.
Figure 8: Power Supply Unit
