Orbis ANRET Serie Manual De Uso página 73

17) Time and date page
The time and date are displayed in dd-mm-yy format
Press "pK" to display the time lapsed from the start-up of the instrument,
expressed in hours and tenths of an hour
Press "up" ( ) to return to the starting page
Note: from the first setting onwards, the time and date will flash.
These will also flash in the peak value pages.
MEASUREMENT/CALCULATION METHOD
The voltage and current measurements are taken in TRMS (True RMS) by
means of sampling and analogue-digital conversion.
The following formulas are used to calculate the system values:
System voltage
System current
Active system power
Reactive system power
Apparent system power
System power factor
Total reactive energy
Mean active system power
pK
h
V 1 + V 2 + V 3
V =
I 1 + I 2 + I 3
I =
P = P 1 +P 2 +P 3
Q = Q 1 +Q 2 +Q 3
A =
PF =
A
E = E 1 +E 2 +E 3
Er = Er 1 +Er 2 +Er 3
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User's Manual - ANRET Q-R / M-R
h
3
3
(algebraic sum)
P + Q
2 2
P