Many PQ investigations end with a follow-up recording to verify a problem has been corrected and to gather a baseline for any further issues. Analyzing the “before” and “after” recordings…
White Papers
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Separating Voltage Sags from Steady State Voltage Readings
Ensuring that service voltage is within ANSI limits is a basic but important step in delivering power. Sophisticated programs such as Conservation Voltage Reduction (CVR) and volt/VAR optimization require continuous…
UPS Power Quality Case Study
In this white paper, power quality issues that can result from an Uninterruptible Power Supply (UPS) are discussed. Covered are the basic operational concepts of the more popular types of…
Quickly Creating PQ Reports
The ProVision Publication Wizard is a quick way to create finished documents from individual graphs and reports. Use the wizard to create publication templates for different PQ applications, and then…
Measuring Power
The Revolution is a powerful tool for measuring and recording power quality information. With ProVision, there are a wide variety of ways to display and analyze many different types of…
Advanced E-Mail Alerts in Canvass
One of the most popular, and useful, features in Canvass is the Distribution List, which allows any chosen alert or event, from any Canvass-enabled device, to be transmitted by email…
Alert Level Programming and Analysis
The proliferation of cellular networks has allowed for quick access to information when it is needed. This quick access to information is available from all of PMI's cell enabled products…
Blondel’s Theorem: One Less Connection for Three-Phase Power
Polyphase power networks are among the most common networks for power transmission. They offer key advantages over single-phase networks. A polyphase system allows the same power to be distributed with…
Analyzing Voltage Sags with Event Change
Identifying the sources for voltage sags can be a somewhat complicated task. Graphs such as waveform capture can obscure the essentials with an RMS-based voltage sag. PMI provides a triggered…
New ProVision Release for Handling Large PQ Recordings
With the introduction of the cell Guardian, 1 GB of memory in a PQ recorder is increasingly common. Although the resulting large files can provide a wealth of data, they…
CBEMA-ITIC Analysis with Stripcharts
The ITIC curve (formerly CBEMA) is a performance-oriented standard for electronic equipment manufacturers. The standard gives a method for classifying and plotting voltage events on a specially constructed graph that…
Recording for NEC 220 Compliance
Utility customers who are expanding operations or adding load must comply with National Electric Code Article 220 to determine if any electrical upgrades are needed. Many customers will ask the…