Appendix B – INFORMA PMD-A Functions
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Appendix B – INFORMA PMD-A Functions
Power Quality Parameters
Power quality parameters can be distinguished between steady state phenomena and non-
steady state phenomena.
Steady State Phenomena
In these phenomena, INFORMA PMD-A records PQ parameters continuously at 10-minute
intervals and/or a user-defined time interval.
Steady state phenomena = continuous recording (10-minute recording and or user-defined
time interval)
•
Power frequency (10-second)
•
Magnitude of supply voltage
•
Flicker
•
Voltage unbalance
•
Harmonics
•
Inter-harmonics
•
Mains signaling (3-second)
•
Over deviation and under deviation
Non-Steady State Phenomena
In these phenomena, INFORMA PMD-A records PQ events/Triggered recordings (DSI,
RVC).
Non-steady state phenomena = triggered recordings/PQ Events
•
Voltage dips/sags, swells, and interruptions (DSI)
•
Rapid voltage changes (RVC)
Power Line Frequency (10-second)
The power frequency is recorded by measuring the time between two positive zero
crossings of the signal.
10-second frequency is a single value derived from configured reference channel, with time
tag, and flagging information. The frequency calculation complies with IEC 61000-4-30.
Summary of Contents for INFORMA PMD-A
Page 1: ...User Manual www qualitrolcorp com INFORMA PMD A Data Acquisition Unit Document ID 40 08557 01...
Page 7: ...Contents Contents iv www qualitrolcorp com References 240...
Page 8: ...About This Manual 1 www qualitrolcorp com Chapter 1 About This Manual...
Page 12: ...Overview 5 www qualitrolcorp com Chapter 2 Overview...
Page 15: ...Components and Specifications 8 www qualitrolcorp com Chapter 3 Components and Specifications...
Page 58: ...Installation 51 www qualitrolcorp com Chapter 4 Installation...
Page 86: ...Configuration 79 www qualitrolcorp com Chapter 6 Configuration...
Page 108: ...Configuration 101 www qualitrolcorp com Figure 6 22 PQ Free Interval Continuous Recording...
Page 120: ...Maintenance 113 www qualitrolcorp com Chapter 7 Maintenance...
Page 126: ...Maintenance 119 www qualitrolcorp com Figure 7 7 Voltage Calibration...
Page 166: ...Appendix B INFORMA PMD A Functions 159 www qualitrolcorp com Figure B 9 RMS Envelope PQRVC...
Page 199: ...Appendix D License Information 192 www qualitrolcorp com Appendix D License Information...
Page 246: ...References 239 www qualitrolcorp com References...