Analyzing Transformer Sound with a Phone – Poor Man’s Analysis
So, you are out on a job and there is a noisy transformer - you know, that humming noise that we are all familiar with. However, something doesn't sound quite…
Machine Learning IoT in a Box: Lessons from the SMRP Conference
Lately there has been a lot of discussion about the differences surrounding electric motor prognostics with expert systems and machine learning IoT devices. The difference became glaringly obvious right before…
How to Evaluate an Electric Motor with Voltage Variance and Unbalance
Voltage variation and unbalance are defined separately within NEMA MG-1. However, in real-life applications these conditions exist at the same time. In this paper we will discuss combined voltage variations…
Review of Power Quality Data on a Traditional Grid Environment Part 3
Why are utility-scale wind and solar important to stability In parts 1 and 2 we identified two different locations as examples of incoming voltage at locations that are either connected…
Review of Power Quality Data in a Traditional Grid Environment Part 1
Figure 1: Part of Data Analytics Project The condition of incoming power has a direct impact on the electrical reliability of a plant. As the conditions surround electrical equipment they…
Interactive Low and High Frequency FFT ESA/MCSA Datasets
Interactive ESA/MCSA spectra at the end of this post. These interactive charts go along with the following https://theramreview.com articles: https://theramreview.com/part-1-whats-behind-mcsa-and-esa-anyways/ https://theramreview.com/part-2-whats-behind-mcsa-and-esa-anyways/ https://theramreview.com/part-3-whats-behind-mcsa-and-esa-anyways/ More can be found in the associated code…
A Quick Demo of MCSA Raw Data in Python Part 3
In Parts 1 and 2 we used 10kHz sampling data in current to take a look at an electric motor. In this part we will look at high and low…
A Quick Demo of MCSA Using Raw Data in Python – Part 2
The data behind the second part of the series on https://theramreview.com. Note: this is for demonstrating the concepts behind MCSA/ESA, vibration and other similar spectral data analysis and should not…
A Quick Demo of MCSA Using Raw Data in Python – Part 1
Done in Jupyter Notebook to demonstrate some of the concepts behind MCSA/ESA/Vibration and any other data of this type. This will be very basic - DO NOT USE for product…
Challenge Data: What did the motor studies really say?
Taking data at face value can result in bad decisions for your physical asset management programs. In this white paper (circa 2017) MotorDoc LLC evaluated the electric motor studies on…