The time and cost of deploying PQ instrumentation only to return later in order to retrieve it (without the guarantee that the PQ anomaly has occurred) is often times exorbitant.…
White Papers
Browse our library of power quality technical resources.
169 results for “revolution” — Clear
Understanding IEEE 1159 Definitions
It is very important to have recommended guidelines and practices in place regarding power quality monitoring with the use of consistent terminology and definitions of power quality phenomena. This is…
Quantifying Residential Voltage Sags
Voltage sag complaints are one of the most common in residential applications. Despite complaints, many residential voltage sags are not actually troublesome, or caused by the utility. Quantifying sag events…
Power Quality Recorder Setup Basics (Part 2)
This whitepaper is a continuation of WP241 (Recorder Setup Basics). In part one the details and relative memory consumption of interval recording was discussed along with the associated controls for…
IEEE 519 Harmonics in Residential Locations
IEEE 519 specifies the measurement technique and limits for harmonics in a wide variety of locations, from transmission through distribution. For the first time, the 2014 edition also provides separate…
Power Factor Correction Capacitors and Harmonics: How PFC Capacitors Affect Harmonic Levels
Power networks have become increasingly more complex with the rapid growth of non-linear loads. These additions place significant burden on a network, resulting in a reexamination of today's installations. This…
Cell, WiFi, and More with the New Cell Guardian Meter Socket Recorder
PMI has just introduced a major redesign of the Guardian meter socket power quality analyzer. This white paper will focus specifically on the new Cell Guardian recorder and cover the…
Electrical Undervoltage and Power Quality
In this whitepaper, the term undervoltage is explained, some typical causes of undervoltages are given, and the effects of undervoltage on customer loads is described. IEEE 1159-2009, IEEE Recommended Practice…
Hardware for Power Quality and Distribution Monitoring
PMI offers an array of monitoring devices for just about any utility distribution monitoring need. Data needs, location, and communications requirements are all factors involved in selecting the right monitor…
Software to Diagnose Power Quality Issues
Data analysis is the key to understanding and solving engineering problems on the distribution system. PMI offers three types of software tools to speed the analysis process, and help manage…
Adjusting Waveform Capture Sampling Rates
Waveform capture is one of the most important data types available for PQ analysis. The sample-level data provides detailed information for voltage disturbances such as oscillatory transients, notches, sub-cycle overvoltages…
Voltage Notching Effects on Harmonic Distortion
Notching is a voltage waveform distortion resulting from short-duration high current pulses. These distortions typically present themselves graphically as a “notch” in the time domain representation of the waveform. The…
