We have recently purchased two R730 server from the Dell representatives in Australia. One of which has undergone a FCC part 15 class A / CISPR 22 test, and fails the conducted emission test at 120V 60Hz. However, it did pass the test at 240V which seems to indicate that the additional current for 120V generates excessive noise to fail the test at around 190kHz. The NATA accredited EMC lab in Melbourne measured a peak of 86.2dBuV when the FCC and CISPR require it below 79dBuV.
All evidences point to the power supply unit as it fails all the way from power-on to power-off. The PSU is a 750W hot-plug Platinum unit with redundancy. Both PSU were tested with the same symptom.
Although it is OK to consume the unit in Australia, our customers come from all over the world, including the United States. We, therefore, need to identify which PSU is safe to operate in US, since Dell products are sold in the US in compliance with the very same FCC regulations.
I would like to find out if anybody has done a FCC part 15 class A or CISPR22 test for EMI/EMC compliance with PowerEdge R730 server or any PowerEdge servers, and managed to pass the certification.