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How to draw Vector Diagram, HV / LV Vectors, Connection Diagram, Testing of Vector Group
An excellent training about Engineering
Power Transformer Vector Group Testing by Voltage Method
Vector Group Test of TransformerThe vector group of transformer is an essential property for successful parallel operation of transformers. Hence every electrical power transformer must undergo through vector group test of transformer at factory site for ensuring the customer specified vector group of transformer. The phase sequence or the order in which the phases reach their maximum positive voltages, must be identical for two paralleled transformers. Otherwise, during the cycle, each pair of phases will be short circuited. The several secondary connections are available in respect of various primary three phase connection in a the three phase transformer. So for same primary applied three phase voltage there may be different three phase secondary voltages with various magnitudes and phases for different internal connection of the transformer. In this lecture I have explained in detail, how to draw & connect Vectors and perform vector group testing.I have explained the concept in a way that you will be able to draw, connect & test vector group without memorizing it.I am always available to reply your question. ThanksMuhammad Kashif
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