Many AMR (automatic meter reading) systems rely on PLC (power line communication) signals for data transfer. These signals travel on the 60Hz distribution network and can be affected by power…
White Papers
Browse our library of power quality technical resources.
432 white papers
Networking Revolutions and Canvass
Recently, PMI augmented the functionality of the Revolution power quality analyzer by integrating it with the Canvass power quality portal. This white paper reviews the requirements for getting a Revolution…
An Overview of DNP3 and the Boomerang Point Map
DNP is the mnemonic for Distributed Network Protocol and it is used to describe a method of communication between various types of data acquisition and control equipment. It plays a…
ProVision Recording Inspector
The Recording Inspector is a new ProVision feature for finding lost files, classifying files by category or recorded data, and combing through large file sets for a certain data type.…
Revolution Access via the Canvass Web Interface
PMI is excited to announce support for Revolution analyzers in Canvass, our cloud-based data analysis software. Utilizing Revolutions with Canvass makes it possible to view graph types that are not…
Techniques for Analyzing Motor Startups
This paper covers the setup fundamentals and techniques required to obtain the high-quality waveform capture needed to analyze a motor startup. It also reviews the basic electrical characteristics of a…
Defining Interharmonics
Interharmonics are frequency components at non-integer harmonics of the line frequency. The proliferation of large DC-converter variable speed drives and wind/solar inverter generation has led to an increase in interharmonic…
Three-Phase Motor Start Causes Voltage Dips
In many cases when a local utility customer complains of voltage problems, it can often be traced back to a neighboring electrical load change that has caused voltage dips on…
Using the CBEMA Curve in ProVision
The ability to record CBEMA data points is a feature that is new in PMI Revolution recorders with firmware 5.66 or later. It is also available as part of a…
Boomerang Networking Options for SCADA and Canvass
PMI's Boomerang monitor is a versatile product, with configurations capable of sampling voltage, current and power. These analyzers are accompanied by powerful analysis software through PMI's Canvass web application or…
Measuring Neutral Voltage Drop with the Eagle 120
This paper shows why the Eagle 120 measures a different voltage potential between the neutral and ground and why the neutral's voltage is elevated above ground under a load condition.…
Interharmonics in ProVision
Recording interharmonic data is a new feature available in certain PMI recorders. Recording of interharmonics is a new feature in the Revolution, and requires at least the firmware version 5.66…
