Two three phase transformer A and B having the same no-load line voltage ratio 3300/400 V supply a load of 750 KVA at 0.707 power factor lagging when operating in parallel. The rating of A is 500 KVA; its resistance is 2% and reactance is 3%. The corresponding values for B are 250 KVA; 1.5% and 4% respectively. Assuming that both transformers have star connected secondary windings, calculate: (a) The load supplied by each transformer (b) The power factor of each transformer. (c) The secondary line voltage of the parallel circuit
Two three phase transformer A and B having the same no-load line voltage ratio 3300/400 V supply a load of 750 KVA at 0.707 power factor lagging when operating in parallel. The rating of A is 500 KVA; its resistance is 2% and reactance is 3%. The corresponding values for B are 250 KVA; 1.5% and 4% respectively. Assuming that both transformers have star connected secondary windings, calculate: (a) The load supplied by each transformer (b) The power factor of each transformer. (c) The secondary line voltage of the parallel circuit
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
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Transcribed Image Text:Two three phase transformer A and B having the same no - load line voltage ratio 3300/400 V
supply a load of 750 KVA at 0.707 power factor lagging when operating in parallel. The rating
of A is 500 KVA; its resistance is 2% and reactance is 3%. The corresponding values for B are
250 KVA; 1.5 % and 4% respectively. Assuming that both transformers have star connected
secondary windings, calculate:
(a) The load supplied by each transformer
(b) The power factor of each transformer.
(c) The secondary line voltage of the parallel circuit
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