Gemini Tinytag Energy Logger Technical Manual page 37

Average and Peak
The 100ms burst of readings is repeated every two seconds
(this is reduced to every five seconds if logging on batteries,
to conserve battery power). The Average Power trace shown
in Tinytag Explorer is the average value over the 5 minute
logging interval - an average of 150 true power calculations.
The Maximum Power trace is the largest value calculated
over the same interval. Maximum Current is calculated on the
same basis.
Per-Phase Power
In some configurations Tinytag Explorer will display three
separate traces for the power transferred by each of the three
phases. This is in addition to the Overall Power trace.
The per-phase power traces are calculated assuming that the
load is wye connected. That is, that all the current in each phase
returns through neutral. This assumption is often entirely true,
for example if the three phases power lighting and office circuits.
The per-phase power traces can be used to judge the balance
between those circuits.
If the three phase load is delta connected then it is not
physically possible to break down the overall power into per-
phase components. The per-phase traces are meaningless
and should be ignored. Only the Overall Power trace is
useful.
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