Ignored/ edited Power Usage sensors keep coming back as alert

This issue concerns Dell Networking N1548P devices.

Several of our Dell N1548P switches are alerting because there is a power usage of 0W. This is not the correct value, but is not my main issue.

When i disable alerting for these sensors, they will disappear for a while, but after next inventory, they will pop back up as alert. My manual disabling has reset. This results in many 'false positive' alerts continuously popping up. 

I also tried to set a manual value of 0W, but unfortunately has the same results. The error will disappear for a while and return after an inventory.

Could you please help me solve this issue?
I am looking forward to your findings.

Kind regards,
Erik Bos