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Appendix B – INFORMA PMD-A Functions
Energy
The following calculations are possible for 3U+3I-star cabling (Ph-Ph type).
Voltage
Current
10 seconds
10/12 cycle
calculation
U
Calculation
rms (1/2)
10/12 cycle
calculation
170
Parameters
Three Phase Distorted
Power
Single phase power factor
Three phase power factor
cos phi
Harmonic Power
Crest Factor
Parameters
Frequency
RMS
Zero Sequence
Positive Sequence
Negative Sequence
Unbalance and Zero
Unbalance
Harmonics (up to 50th
order)
Inter-harmonics (up to 50
order)
THD( THD, THD Odd,
THD Even)
Flicker
instantaneous(Pinst)
Flicker short term (10
minutes)-Pst
Frequency (10 minutes)
Signaling Voltages (3)
Under and Over Deviation
RMS
Zero Sequence
Positive Sequence
Negative Sequence
Unbalance and Zero
Unbalance
RMS
Harmonic (up to
th
50
order)
Inter-harmonics
TDD
k-Factor
Total Nos.
150
864
Total Nos.
150
th
147
32
150
147
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1
3
1
3
6
8
1
3
1
1
1
2
9
3
1
3
6
3
1
1
1
2
3
3
3
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