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A 1000-VA, 230/115-V transformer has been tested to determine its equivalent cir- cuit. The results of the tests are shown below. Open-circuit test (on secondary side) Short-circuit test (on primary side) Vsc = 17.1 V Yoc=115 V Toc = 0.11 A Poc 3.9 W Psc = 38.1 W Isc = 8.7 A 4 Chie Sandry (a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer. Seday (b) Find the transformer's voltage regulation at rated conditions and 45 0.8 PF lag- ging, (2) (3) Pending. (c) Determine the transformer's efficiency at rated conditions and 0.8 PF lagging.

A 1000-VA, 230/115-V transformer has been tested to determine its equivalent cir- cuit. The results of the tests are shown below. Open-circuit test (on secondary side) Short-circuit test (on primary side) Vsc = 17.1 V Yoc=115 V Toc = 0.11 A Poc 3.9 W Psc = 38.1 W Isc = 8.7 A 4 Chie Sandry (a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer. Seday (b) Find the transformer's voltage regulation at rated conditions and 45 0.8 PF lag- ging, (2) (3) Pending. (c) Determine the transformer's efficiency at rated conditions and 0.8 PF lagging.

Power System Analysis and Design (MindTap Course List)
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.9P
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A 1000-VA, 230/115-V transformer has been tested to determine its equivalent cir- cuit. The results of the tests are shown below. Open-circuit test (on secondary side) Short-circuit test (on primary side) Vsc = 17.1 V Yoc=115 V Toc = 0.11 A Poc 3.9 W Psc = 38.1 W Isc = 8.7 A 4 Chie Sandry (a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer. Seday (b) Find the transformer's voltage regulation at rated conditions and 45 0.8 PF lag- ging, (2) (3) Pending. (c) Determine the transformer's efficiency at rated conditions and 0.8 PF lagging.
Transcribed Image Text:A 1000-VA, 230/115-V transformer has been tested to determine its equivalent cir- cuit. The results of the tests are shown below. Open-circuit test (on secondary side) Short-circuit test (on primary side) Vsc = 17.1 V Yoc=115 V Toc = 0.11 A Poc 3.9 W Psc = 38.1 W Isc = 8.7 A 4 Chie Sandry (a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer. Seday (b) Find the transformer's voltage regulation at rated conditions and 45 0.8 PF lag- ging, (2) (3) Pending. (c) Determine the transformer's efficiency at rated conditions and 0.8 PF lagging.
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