Revolution meters are compact, cellular-connected power monitors. Unlike the Tensor, Seeker, Guardian, and Bolt devices, which initiate their own uploads to PQ Canvass, Revolutions do not push their recordings to…
White Papers
Browse our library of power quality technical resources.
441 white papers
Heat Pumps and the Winter Peak
As American homes shift from gas furnaces to heat pumps, the load that used to burn gas now arrives at the residential transformer — in winter, at the coldest hours,…
Reverse Power Flow in Distribution Feeders
Most distribution feeders were planned around one-way power flow: from centralized generation, through substations and feeders, to customer loads. The rapid growth of Distributed Energy Resources (DERs) — rooftop solar,…
Region of Interest (ROI) Snapshots in Merlin™
Power Quality recordings are the primary source of evidence in any PQ investigation. The problem is that these recordings can be weeks long and contain hundreds of captures, which makes…
Merlin™ Document Writer
The Merlin™ Document Writer turns a completed power quality analysis into finished, shareable documents: customer letters, executive summaries, technical reports, regulatory responses, and more. It works from reusable templates that…
Understanding Voltage Phase Angle Jumps
Introduction Modern industrial and utility electrical systems increasingly rely on equipment that responds not only to voltage magnitude, but also waveform timing and phase stability. Equipment trips, transfer events, or…
Understanding Load Diversity and Its Effect on Power Quality
Introduction Your home and the office building down the street both run on electricity from the same utility, but they don’t typically use it in the same way at the…
Understanding Voltage Phase Rotation in Three-Phase Systems
Three-phase power systems depend not only on equal voltages between phases but also on the order in which those phases reach their peaks — a property called phase rotation. Incorrect…
COMTRADE in PQ Canvass
The Common Format for Transient Data Exchange (COMTRADE) defined by IEEE C37.111 and IEC 60255-24 is a file format most commonly produced by protective relays and digital fault recorders, though…
Analyzing Motor Startups with the Bolt
Induction motors are ever popular in today’s world and can be found in most areas of life — industrial, agricultural, and even residential settings. These motors can have high inrush…
Understanding Voltage Stability vs. Voltage Regulation
Voltage stability and voltage regulation are commonly confused concepts, particularly in the context of customer voltage complaints and power quality investigations. These two phenomena differ significantly in both cause and…
Introduction to Ferroresonance
Ferroresonance is a nonlinear electrical phenomenon that can damage transformers, surge arresters, cable insulation, and switchgear — and create dangerous backfeed voltages on conductors that should be de-energized. Although relatively…
