Loose/open neutrals can present a dangerous and even life-threatening situation in a residential service. The classic voltage symptoms suggesting this condition are one single-phase leg rising in voltage, the other…
Products White Papers
Power quality white papers on Products.
295 white papers in Products
Advanced Harmonic Analysis Through Bulk ProVision Exports
The IEEE 519-2014 harmonic standard calls for several advanced data analysis procedures. Some of these, especially when combining with data from other devices, may be performed in Excel or Matlab.…
PQ Recording Templates
This whitepaper describes the use and customization of PQ recording templates in PQ Canvass, iPowerPad, and in the ProVision software. PMI recording devices can be initialized with many different configurable…
Wireless Power Quality
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.…
Cybersecurity and Cell Communications with the Guardian, Revolution, & Boomerang
Cybersecurity is an important component for any electric utility network device. PMI devices such as the Cell Guardian, Revolution, and Boomerang (Figure 1) generate data from raw voltage and current…
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…
Boomerang Configuration for SCADA Systems
PMI's Boomerang family of products (as shown in Figure 1) is available in multiple form factors and channel configurations. All Boomerangs are capable of communication over either a cellular data…
Using Cycle Stripcharts
Stripchart recording is an important tool for analyzing complex data. It provides a visual means to easily digest extensive quantities of recorded information over long time periods. In most cases,…
Recording Interharmonics with the Revolution
Interharmonics are on the rise because of large non-linear loads and sources being introduced to the distribution network, in particular large Variable Frequency Drives (VFDs) and inverters for distributed generation.…
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…
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…
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…