Wave notching is a type of voltage distortion that appears as a very fast, repetitive dip or "notch" in the sinusoidal waveform of an AC power system. This periodic disturbance…
Identify Resonance & Distortion With PQ Canvass 3D Graphs
Modern loads convert the utility AC voltage into DC for use internally; this process generates harmonic currents. Harmonic currents can necessitate transformer derating, introduce voltage distortion, and even cause false…
Delta (Line to Line) Voltage
In the world of electrical engineering and power distribution, understanding the relationship between different voltage types is essential. One of the key distinctions in three-phase power systems is the difference…
Line and Phase Voltage in PQ Canvass
PQ Canvass now supports viewing RMS Voltage in a virtual Delta hookup (Line-Line) when the device is hooked up to a Wye configuration (Line-Neutral) and initialized as such. This feature…
Voltage Imbalance and Its Impact on Waveform Distortion
Voltage imbalance, also referred to as voltage unbalance, is an important power quality issue that can lead to significant operational problems in customer equipment. It occurs when the magnitudes or…
PQ Canvass and Cybersecurity
PQ Canvass is PMI's next-generation web-enabled power monitoring and analysis platform. Deploying PQ Canvass as a web application provides a number of benefits: analyzing recordings while the recorder is still…
Auto-Correction of CT Hookup
Sometimes when hooking up CTs for a device, a user will inadvertently place the CTs in the wrong configuration. Maybe the channel 2 CT was placed on the third phase…
60Hz Phasors and Extended PQ Measurements
This white paper walks the reader through a method to take basic core PQ measurements and derive several other measurements (such as 60Hz power, Voltage and Current THD, distortion power…
Introduction to PMI View
Power Monitors' PMI View is a cutting-edge iOS and iPadOS application for performing power quality analysis in the field, bringing the full capabilities of PMI's advanced recording devices to your…
Disconnecting a Power Quality Recorder
This whitepaper covers the proper method used to disconnect power quality recorders and remove them safely from their location. Following the proper disconnection sequence eliminates or minimizes generating and recording…
Using the Revolution Mounting Bracket
The PMI mounting bracket provides a variety of methods to temporarily or permanently attach a Revolution or 3-phase Boomerang to a metal enclosure, mounting plate, or many other points. Internal…
Understanding Recording Modes
Recorders connected in ProVision have two primary modes: Standby mode and Ready mode. Each of these modes has a distinct purpose, and some recorder operations in ProVision require the recorder…
