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12.1.2.4 Measurement channel overview
X
= always present
Xi
= present if current is measured
Xt
= present if the associated trigger has been activated
O
= able to be switched on/ off (optional)
-
= not present
Bold and italic entries are required for the EN 50160.
Measurement intervals: the interval written in bold print is to be used for compliance with the standard EN 50160.
For all channels, it's possible to calculate a histogram and the cumulative frequency subsequently.
Measurement
Voltage
Ux_rms_mean*
Ux_rms_min
Ux_rms_max
Ux_rms_redu
Ux_THD_mean
Ux_harmn_mean
with x=1..4; n=1..50
Ux_frz_mean
with z=1..10
Current
Ix_rms_mean
Ix_rms_min
Ix_rms_max
Ix_rms_redu
Ix_THD_mean
Ix_TDD_mean
Ix_harmn_mean
with x=1..4; n=1..50
Ix_frz_mean
with z= 1..10
Frequency
Frequency
Frequency_min
Frequency_max
Symmetry
Unbalance_rms
Measurement intervals
and comments
3 s, 10 s
1 min, 5 min, 10 min, 15 min, 30 min
1 h, 2 h
Mean of the voltage RMS value
Minima in the aggregation interval
Maxima in the aggregation interval
Reduced time plot (maximum resolution: 1/2
cycle)
THD ( voltage total harmonic distortion)
Voltage harmonics
Arbitrary monitored fixed frequencies
(e.g. interharmonics)
3 s, 10 s
1 min, 5 min, 10 min, 15 min, 30 min
1 h, 2 h
Mean of the voltage RMS value
Minima in the aggregation interval
Maxima in the aggregation interval
Reduced time plot
THD ( current total harmonic distortion)
TDD current
Current harmonics
Arbitrary monitored fixed frequencies
3 s, 10 s, 30 s, 1 min, 5 min, 10 min
Mean of system frequency
Minima in the aggregation interval
Maxima in the aggregation interval
3 s, 10 s
1 min, 5 min, 10 min, 15 min, 30 min
1 h, 2 h
3-phase
current
4-wire
X
X
O
O
X
X
X
O
O
Xi
O
O
Xi
Xi
O
Xi
O
X
O
O
X
X
Power Quality Recorder SICAM Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 12.01.2015
Computations
E-55
3-phase
Single-line
current
3-wire
X
X
X
X
O
O
O
O
X
X
X
X
X
X
O
O
O
O
Xi
Xi
O
O
O
O
Xi
Xi
-
Xi
O
O
-
Xi
O
O
X
X
O
O
O
O
X
-
X
-
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