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Basics
12.1
12.1.1 Preface
The first step will be to introduce basic ideas from the SICAM Q80 7KG8080 measurement philosophy which are the
basis for using the device correctly. This knowledge is crucial, since already when you set up a measurement, it's
necessary to know what settings influence your results, and which ones don't.
12.1.2 Measurement types
12.1.2.1 Connected channels and power measurement
Three modes for power measurement are available:
1 phase power measurement
2 phase power measurement
3 phase power measurement
12.1.2.2 Explanation of symbols
12.1.2.2.1 Device terminals
SICAM Q80 7KG8080
U1 = Voltage measurement input 1
(also channel designation in the display)
U2 = Voltage measurement input 2
U3 = Voltage measurement input 3
U4 = Voltage measurement input 4
SICAM Q80 7KG8080 - 1
U1 = Voltage measurement input 1
(also channel designation in the display)
U2 = Voltage measurement input 2
U3 = Voltage measurement input 3
U4 = Voltage measurement input 4
12.1.2.2.2 Designations of the voltages in the three-phase network
U
= Voltage of Line 1 to Ground
L1
U
= Voltage of Line 2 to Ground
L2
U
= Voltage of Line 3 to Ground
L3
N = Neutral line potential
I1 = Current measurement input 1
(also channel designation in the display)
I2
= Current measurement input 2
I3 = Current measurement input 3
I4 = Current measurement input 4
U5 = Voltage measurement input 5
U6 = Voltage measurement input 6
U7 = Voltage measurement input 7
U8 = Voltage measurement input 8
I
= Current in Line 1
L1
I
= Current in Line 2
L2
I
= Current in Line 3
L3
I
= Current in neutral line
N
Power Quality Recorder SICAM Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 12.01.2015
Computations
E-51
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