SFRA stands for Sweep Frequency Response Analysis. This test is very reliable for condition monitoring of physical condition of transformer winding. Why to conduct SFRA test? The winding of Transformer may be subjected to mechanical stresses during transportation, heavy short circuit faults, transient switching impulses &...
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May 15, 2016 admin
Electrical Machines, Power System Protection
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The area of the window and cross-sectional area of the limb are the main dimensions of a transformer; the product of which is directly proportional to the size and weight of the Transformer. Larger this product, bigger and heavier is the Transformer. While designing a...
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May 14, 2016 admin
Electrical Machines
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In this post we will discuss the Magnetizing Inrush Current in a Power Transformer. Magnetizing Inrush urrent in Transformers results from any abrupt changes of the magnetizing voltage. This current in transformer may be caused by energizing an unloaded transformer, occurrence of an external fault,...
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May 8, 2016 admin
Electrical Machines, Power System, Power System Protection
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Brushless Excitation System is a technology for providing the field current to the Synchronous Generator without using Slip Ring and Carbon Brushes. As this method of Excitation i.e. Brushless Excitation System do not use Carbon Brushes, therefore the losses because of contact resistance of carbon...
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May 1, 2016 admin
Electrical Machines, Uncategorized
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