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Tyler Voss Membership & Communications Specialist+1 314 993 2220tvoss@easa.com
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Gene Vogel EASA Pump & Vibration Specialist
The most basic tool a vibration analyst uses is the vibration spectrum. The spectrum is a graphic illustration of the frequencies present in a vibration signal and their relative amplitudes. A good way to understand the spectrum is that it is a “bar graph” of the frequencies, with hundreds of individual vertical frequency “bars” across a range of frequencies. Most spectra are displayed with only a single dot for the highest amplitude in each frequency bar, so the graph appears as a jagged line reflecting those highest amplitudes for each bar. The highest frequency in the graph is called the fmax and the number of bars in the graph is known as the “number of lines of resolution.”
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This 40-page booklet provides great advice for obtaining the longest, most efficient and cost-effective operation from general and definite purpose electric motors.
This booklet covers topics such as:
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The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.
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Recommended Practice for the Repair of Rotating Electrical Apparatus This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.
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Revised May 2024 The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.
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