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The selections for the configuration are presented in the description of the user interface in the system manual.
3-phase current
4-wire system
3-phase current
3-wire system
Terminal
Channels
designation
displayed
3xU, 3xI
U
= U
U
1
L1
U
= U
U
2
L2
U
= U
U
3
L3
N
U
= U
12
U
= U
23
U
= U
31
I
L1
I
L2
I
L3
Terminal
Channels
designation
displayed
circuit
3xU, 2xI - ARON
U
U
L1
U
U
U
L3
N
N= U
U
12
U
23
U
31
I
L1
I
I
L3
3 phase power measurement
-N
for Lines n= 1,2,3 each
L1
S
=U
* I
-N
n
nRMS
L2
-N
L3
-U
L1
L2
-U
L2
L3
-U
L3
L1
P,Q,S,cos phi for each of 1st..50th harmonics
=
I
I
1
L1
Total power
=
I
I
2
L2
=
I
I
3
L3
3 phase power measurement
= U
1
L1
= leer
2
= U
3
L3
L2
= U
-N
L1
= N-U
L3
=
-
U
U
U
is computed
L3
L1
3
=
I
I
1
L1
=
-
I
I
I
is computed
2
1
3
2
=
I
I
3
L3
Power Quality Recorder SIMEAS Q80 7KG8080, Operating instruction
Computations
Power computation
nRMS
Power computation
E50417-B1074-C419-A1, Release 07.05.2010
E-47
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