The switch has redundant power supply units (PSs) numbered 0 and 1 that you can monitor for overall health as well as detailed information.
-> show -d properties /SYS/PSslot
where slot is either 0 or 1, corresponding to the PS for which you want to display information.
For example, to display the PS0 state, type:
-> show -d properties /SYS/PS0/PWROK /SYS/PS0/PWROK Properties: type = Power Supply ipmi_name = PS0/PWROK class = Discrete Sensor value = Asserted alarm_status = cleared ->