Symptom
When a customer uses a multimeter to check the input currents of the two power supplies for the OptiX BWS 1600G, it is found that one input current is 36.5 A and the other is 31.3A. The two power supplies are different.
Cause analysis
When the difference between the voltages of the two power supplies is greater than 0.7 V to 1 V, the equipment is switched to the power supply with higher voltage.
When the difference is smaller than 0.7 V to 1 V, the power supplies share the load but not in an absolute average; thus, the input currents of the two power supplies are different.