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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
= not used
2
U
U
L3
N= U
N
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
-N
n
nRMS
L2
-N
L3
-U
L1
L2
-U
L2
L3
P,Q,S,cos phi for each of 1st..50th harmonics
-U
L3
L1
Total power
=
I
I
1
L1
=
I
I
2
L2
=
I
I
3
L3
or
by IEEE1459 / 3 Watt meter method
S
= S
+ S
S
1
P
= P
+ P
S
1
Q
= Q
+ Q
S
1
3 phase power measurement
= U
1
L1
= U
3
L3
L2
= U
-N
L1
= N-U
L3
=
-
U
U
L3
L1
U
is computed
3
=
I
I
1
L1
=-
-
I
I
I
is computed
2
1
3
2
=
I
I
3
L3
Power Quality Recorder SICAM Q80 7KG8080, Operating instruction
Computations
Power computation
* I
nRMS
in accordance with DIN40110
Vektorielle Addition
+ S
Arithmetische Addition
2
3
+ P
2
3
+ Q
2
3
Power computation
E50417-B1074-C419-A2, Release 12.01.2015
E-53
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