Orbis ANRET M-MULTI Manual De Uso página 42

9) Reactive energy page
The total reactive energy is
displayed
When the " " key is
A Sys
pressed on the reactive
energy indication, the partial
reactive energy meters for
each phase are added
These meters are zeroed
when the sum of the reactive
partial energy ratings for the phases increases the total reactive energy value
Press the " " key again to return to the reactive energy page, and use
A Sys
the " " key to go to the display of the frequency page
V
10) Frequency page
The frequency is displayed (in field L1)
Press the " " key again to return to
V
the display of the concatenated voltage
page
MEASUREMENT / CALCULATION METHOD
The voltage and current values are measured 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 power rating of system
Reactive power rating of system
Apparent power rating of system
k
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 =
- 40 -
User's Manual - ANRET M-MULTI / Q-MULTI
L1
k
M
V
L2
A Sys
W
L3
PF
Wh OK
M k
varh Prg
L1
L2
L3
k M
3
3
(algebraic sum)
(algebraic sum)
P + Q
2 2
L1
k
M
V
L2
A Sys
W
L3
PF
Wh OK
M
varh Prg
k
M
V
A Sys
W
PF
Wh
OK
varh Prg