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Keep your staff up to date with training courses from the experts at SHERMCO.
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Most electrical equipment failures are the result of insulation deterioration. Power factor testing is the most effective and common way…
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The power factor correction is a technique of increasing the power factor of a power supply. Switching power supplies without…
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The detection of certain gases generated in an oil-filled transformer in service can be an indication of a malfunction that…
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Insulating oils are used in power transformers to provide cooling, insulation, and protection against corona and arcing. Transformer oils are…
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Measuring transformer ratio from one external terminal to another reveals a great deal of information about the transformer. Transformers are…
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Winding resistance measurements in transformers are of fundamental importance for the following purposes: calculations of the I2R component of conductor losses;…
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Sweep frequency response is a major advance in transformer condition analysis, allowing visualization of the inside of a transformer’s tank…
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After a power or distribution transformer is disconnected from the power grid, or when a DC current is applied to…
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The excitation test is one of many tests typically used to verify the overall “health” of the transformer; it is…
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With an understanding of the construction and maintenance of transformers, you will be able to make informed decisions about the…
This fundamental course was developed for technicians and managers who need to understand electrical power systems: how they are designed,…
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A time current curve (TCC) plots the interrupting time of an overcurrent device based on a given current level. These…
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There are many different types of devices which you can use to test for voltage; it is important to understand…