The article introduces the behavior of imbalance Current seen on MX2000-PSM-DC-S two input feeds

INP1 input current is 0

PSM 10 status:
State           Online
Temperature               OK                   
DC Input          Feed    Voltage(V) Current(A) Power(W)
               INP0     52.80    4.90   258.72
               INP1     52.80    3.85   203.28
DC Output         Voltage(V) Current(A) Power(W)  Load(%)
                51.50   8.00    412.00   16.48
Hours Used         90677
PSM 11 status:
State           Online
Temperature               OK                   
DC Input          Feed    Voltage(V) Current(A) Power(W)
               INP0     52.40    9.45   495.18
               INP1     52.40    0.00   0.00  
DC Output         Voltage(V) Current(A) Power(W)  Load(%)
                51.75   9.00    465.75   18.63
Hours Used         36
PSM 12 status:
State           Online
Temperature               OK                   
DC Input          Feed    Voltage(V) Current(A) Power(W)
               INP0     52.80    4.90   258.72
               INP1     52.80    4.20   221.76
DC Output         Voltage(V) Current(A) Power(W)  Load(%)
                51.50   8.00    412.00   16.48
Hours Used         90677

"The DC power subsystem is feed redundant. Each DC PSM can be connected to two separate feeds from different sources that are used to provide feed redundancy. If two feeds are connected, PSM input power will be drawn from the feed with the higher voltage present. There are two PDMs per power subsystem capable of carrying nine feeds each. Connect feeds from one source to one PDM and feeds from the other source to the second PDM of the power subsystem. The primary input of the PSM is a dual redundant feed, INP0 and INP1. Both feeds are active during operation, but both feeds may or may not be providing current."
 

The Current imbalance between Feeds did not indicates any hardware defect so far.

The feed redundancy can be verified by switch off INP0:

• Both input were ON.

PSM 11 status:
  State                      Online
  Temperature                             OK                                     
  DC Input                   Feed       Voltage(V)  Current(A) Power(W)
                             INP0         52.40       9.45      495.18
                             INP1         52.40       0.00      0.00  
  DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                               51.75      8.75       452.81     18.11
  Hours Used                 767

• INP0 was OFF

  PSM 11 status:
  State                      Online
  Temperature                             OK                                     
  DC Input                   Feed       Voltage(V)  Current(A) Power(W)
                             INP0         0.00        0.00      0.00  
                             INP1         52.40       9.10      476.84
  DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                               51.75      8.75       452.81     18.11
  Hours Used                 767

• Based on experience , the Current imbalance can vary from some external triggers, such as swapping power breakers , shaking the power cable on the PDM and etc .

  PSM 11 status:
  State                      Online
  Temperature                             OK                                      
  DC Input                   Feed       Voltage(V)  Current(A) Power(W)
                             INP0         52.40       6.30      330.12 
                             INP1         52.40       2.80      146.72
  DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                               51.75      8.75       452.81     18.11
  Hours Used                 767