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Power Monitors, Inc.
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Tools you need. People you trust.
Tools you need. People you trust.

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Learn about the origin of the GE Flicker Curve and how to apply it using PMI tools.

The GE Flicker, developed by General Electric in the 1930’s, is one of the oldest and most common flicker standards used today.

The GE Flicker Curve is based on studies done on a correlation of human perception of light flicker in reference to voltage fluctuation over time.

All current PMI recorders have the capability of generating Flicker Reports and use the GE Flicker Curve as bases for the default trigger settings.

Some of PMI recorders are also setup to record other more resent flicker standards.

Since light flicker is very subjective, a utility customer can always modify the recorder’s Flicker Report settings to be more or less sensitive than the default GE Flicker Curve.

The PMI Recorder’s GE Flicker Report is a very useful tool for documenting and tracking down the cause of voltage fluctuations that create annoying light flicker to utility customers.

#geflickercurve #powermonitoring #powerquality
https://hubs.ly/H0ccZSx0
Application of the GE Flicker Curve
Application of the GE Flicker Curve
library.powermonitors.com

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Join us this Thursday at 2 PM EDT for our NEW white paper review: Transferring ProVision Recordings to PQCanvass

#provision #pqcanvass #powermonitoring #powerquality

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It's not too late to join us, TODAY at 2 PM EDT for our weekly Ask-a-Pro on our latest white paper topic, Holdoff and Aggregation with Canvass Alerts!

#holdoff #aggregation #canvass #powermonitoring #powerquality

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NEW White Paper: Transferring ProVision Recordings to PQCanvass

Unlock the benefits of ProVision's ability to sync recordings with PQCanvass.

There are several reasons to upload ProVision recordings to PQCanvass.

Uploaded files allow for the sharing of recordings with users that have the same PQCanvass account. Uploaded recordings can also be graphed in PQCanvass allowing side by side graphing with Boomerang data, and other recordings.

PQCanvass can be used as a central repository for ProVision recordings, allowing you to view recordings from diverse locations and differing devices without the need to install ProVision. This is possible because PQCanvass is web-based, allowing users to use devices, such as tablets, that cannot run ProVision.

Another benefit is that PQCanvass can replace localized central repositories that require IT departments to setup.

When ProVision recordings are transferred to PQCanvass, they are converted to the newer NSF recording format for transfer, if they are in the older XSB or XSF formats. The original recording is left in place in its original format. The NSF format is required for viewing in PQCanvass.

#provision #pqcanvass #powermonitoring #powerquality

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Read how holdoff and aggregation settings in Canvass allow for greater control and detailed notifications.

This white paper provides insight on how to set the granularity of alerting, thus avoiding notifications of unwanted momentary interruptions or other temporary events.

Frequently, some events are short enough that notification is not needed. These short events can result in a flurry of emails or text messages for a problem that’s already resolved on its own. Receiving a flood of notifications for these short events can cause notifications of unresolved events to go unnoticed. Holdoffs can be used to ignore these events when they are short enough that immediate notification.

#holdoff #aggregation #canvass #powermonitoring #powerquality

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Check out this week's Ask A Pro Webinar: Understanding RMS Measurements, this Thursday at 2 PM EDT
#rmsmeasurements #powermonitoring #powerquality

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Read this white paper to understand the best method for measuring voltage and current in an AC system.

This paper discusses how to take instantaneous readings for a voltage or current waveform and convert them to their Root Mean Square (RMS) value. It also explains how to analyze a single-cycle of the waveform in both the time and frequency domains.

Plus, we take a look at the decomposition of the voltage waveform into its individual harmonic frequency components in order to get an understanding of where the instantaneous voltage value comes from.

Finally, using Parseval’s Theorem, we are able to convert the frequency domain values produced by the waveform capture of a Variable Frequency Drive (VFD) to calculate the IRMS of the complex waveform, showing that the RMS value encompasses all harmonic information.

#rms #powermonitoring #powerquality
Understanding RMS Measurements
Understanding RMS Measurements
library.powermonitors.com

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Join us this Thursday, May 3rd at 2 PM EDT to review our popular white paper: Power Transformer K-factor #powertransformer #kfactor #powermonitoring #powerquality

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Understand the importance of Power Transformers' K-factor and follow these simple steps to verify transformer content and load.

In this white paper I review K-factor in regards to power transformers, how K-factor is defined and calculated and how K-factor is used.

K-factor is a way of rating or de-rating a transformer’s handling capacity in the presence of a non-linear load, with the goal of preventing transformer overheating.

The normal range of the K-factor is from 1 to 50.

A K-Factor of 1 indicates a purely linear load with no harmonics, while a K-factor of 50 would indicate a severely non-linear load very rich in harmonics.

The higher the K-factor rating on a transformer, the larger the nonlinear load it is designed to handle without overheating.

Heat is one of a transformer’s largest enemies and can lead to a reduction in its lifespan, or even failure.

#powertransformer #kfactor #powermonitoring #powerquality
Power Transformer K-Factor
Power Transformer K-Factor
library.powermonitors.com

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Review Using Iron-Core CTs with us, this Thursday at 2 PM EDT #tlarcts #powermonitoring #powerquality
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