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SME2-IS - Manual - 06- 2021
MEASUREMENTS, LOGICAL STATES AND COUNTERS
5 MEASUREMENTS, LOGICAL STATES AND COUNTERS 5 MEASUREMENTS, LOGICAL STATES AND COUNTERS
All variables are shown on the display,Thyvisor and communications.
Measurements
Direct
RMS fundamental phase currents I
L1
, I
L2
, I
L3
RMS fundamental phase voltages U
L1
, U
L2
, U
L3
RMS fundamental residual current I
E
RMS fundamental residual voltage U
E
Capacitive voltage divider voltage V
2
67N measurements
Residual current I
E
Residual voltage U
E
Phase shift of I
E
relative to U
E
PhiE
Calculated
Phase-to-phase voltages U
12
, U
23
, U
31
Maximum current between I
L1
-I
L2
-I
L3
I
Lmax
Minimum current between I
L1
-I
L2
-I
L3
I
Lmin
Mean current between I
L1
-I
L2
-I
L3
I
L
Maximum voltage between U
L1
-U
L2
-U
L3
U
Lmax
Mean voltage between U
L1
-U
L2
-U
L3
U
L
Maximum voltage between U
12
-U
23
-U
31
U
max
Mean voltage between U
12
-U
23
-U
31
U
Phase shift measurements
Phase shift of I
L1
relative to U
L1
PhiL1
Phase shift of I
L2
relative to U
L2
PhiL2
Phase shift of I
L3
relative to U
L3
PhiL3
Phase shift of I
L1
relative to U
23
Alpha1
Phase shift of I
L2
relative to U
31
Alpha2
Phase shift of I
L3
relative to U
12
Alpha3
Phase shift of U
E
relative to I
E
PhiE
Sequences
Direct sequence voltage U
1
Reverse sequence voltage U
2
Power measurements
Total active power P
Total reactive power Q
Total apparent power S
Power factor CosPhi
Second harmonic
Phase current second harmonic (I
L1-2nd
, I
L2-2nd
, I
L3-2nd
)
Maximum percentage ratio of phase current second harmonic/fundamental component
(I
-2nd
/I
L
)
3rd harmonic measurements
Phase current third harmonic I
L1-3rd
, I
L2-3rd
, I
L3-3rd
4th harmonic measurements
Phase current fourth harmonic I
L1-4th
, I
L2-4th
, I
L3-4th
5th harmonic measurements
Phase current fth harmonic I
L1-5th
, I
L2-5th
, I
L3-5th
Average phase currents
Fixed mean phase currents I
L1FIX
, I
L2FIX
, I
L3FIX
Mobile mean phase currents I
L1ROL
, I
L2ROL
, I
L3ROL
Phase overcurrents I
L1MAX
, I
L2MAX
, I
L3MAX
Minimum phase currents I
L1MIN
, I
L2MIN
, I
L3MIN
Average phase-to-phase voltages
Fixed mean phase-to-phase voltages U
12FIX
, U
23FIX
, U
31FIX
Mobile mean phase-to-phase voltages U
12ROL
, U
23ROL
, U
31ROL
Maximum phase-to-phase voltages U
12MAX
, U
23MAX
, U
31MAX
Minimum phase-to-phase voltages U
12MIN
, U
23MIN
, U
31MIN
Average measures at 10 s
10 s mean phase currents I
L1IST
, I
L2IST
, I
L3IST
10 s mean phase-to-phase voltages U
12IST
, U
23IST
, U
31IST
10 s mean active power P
IST
10 s mean reactive power Q
IST
10 s mean THD of current I
L3
THD-I
L3IST
10 s mean THD of U
L3
THD-U
L3IST
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