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SME2-IS - Manual - 06- 2021
TECHNICAL CHARACTERISTICS
3.8 MONITORING AND CONTROL FUNCTIONS
Oscillograph
[1]
Format
COMTRADE
Recording method cyclic
Sampling frequency 32 samples per period
Trigger settings:
• Pre-trigger time 0.05...1.00 s (step 0.01 s)
• Post-trigger time 0.05...60.00 s (step 0.01 s)
• Output triggers K1...K5
• Input triggers IN1...IN6
• Manual control Thyvisor, remote control
Sampled channel settings:
• Instantaneous currents i
L1
, i
L2
, i
L3
, i
E
• Instantaneous phase voltages u
L1
, u
L2
, u
L3
, u
E
Measurement channel settings
(Analogue 1...12):
• Frequency f
• Phase currents I
L1
, I
L2
, I
L3
• Calculated residual current I
E
• Phase voltages U
L1
, U
L2
, U
L3
• Calculated residual voltage U
E
• Phase-to-phase voltages U
12
, U
23
, U
31
• Phase shift (I
L1-
U
L1,
I
L2-
U
L2,
I
L3-
U
L3
) Phi
L1
, Phi
L2
, Phi
L3
• Phase shift (I
L1-
U
23,
I
L2-
U
31,
I
L3-
U
L3
) Alpha
1
, Alpha
2
, Alpha
3
• Phase shift (U
E-
I
E
) Phi
E
• Forward and reverse sequence voltage U
1
, U
2
• Phase current second harmonic I
L1-2nd
, I
L2-2nd
, I
L3-2nd
• Percentage ratio of phase current second harmonic/fundamental component
(I
-2nd
/I
L
)
Digital channel settings (Digital 1...12):
• Input status UD, RVS, Anin, caX89, ccX89
• Output status K1...K5
3.9 MEASUREMENTS
Measurements
Sampling frequency 256 s/p
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
Note 1 This function requires a license, contact Thytronic to purchase it
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