A few thoughts:
- That DateTime format with the Z is a fairly standard output for time series data - It’s really just UTC time with decimal seconds, though from what I have seen of Sense Power Quality CSVs, none of the timestamps includes the decimal seconds. But that may mean also mean truncation that is independent formatting. Sense might have a more exact time for the event, but truncate / round. I wouldn’t necessary read it as now second samples.
- In that same vein, the detection period has to be 17msec or greater because there is no consistent way to compute RMS (AC) voltage without seeing a full 60Hz cycle.
- If you want to post or PM me the raw CSV, I can do a quick analysis run like the one below. I find this to be the most useful for seeing what’s going on with the power events - It shows what combos of L1 and L2 out-of-bounds are occurring. I haven’t seen a single case where either L0 or L1 have an event that have the leg both above and below the trigger range.
