Transformer 1 400/115V transformer Electrical Machines Transformer test results Open Circuit Iron Losses (Pi) 1.5W Current (I) 8.3mA Short Circuit Voltage Short Circuit (Vsc) Current (Ip) 38V 0.124A Voltage Primary 400V Copper Losses (Pc) 2.2W Transformer 2 230/12V transformer | Open Circuit Iron Losses (Pc) 2.5W Current (I) 32.5mA Short Circuit Voltage Short Circuit (Vsc) Current (Ip) 50V 0.88A Voltage Primary 230V Copper Losses (Pc) 3W regulation is (Res cos (0) + Xessin (0)) is (Rescos (0) + Xessin (0)) + Vs × 100%

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 3.19MCQ: With the American Standard notation, in either a Y-or-Y transformer, positive- sequen quantities on...
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Please work out the voltage regulation using the information in the images

Transformer 1
400/115V transformer
Electrical Machines
Transformer test results
Open Circuit
Iron Losses (Pi)
1.5W
Current (I)
8.3mA
Short Circuit
Voltage Short
Circuit (Vsc)
Current (Ip)
38V
0.124A
Voltage Primary
400V
Copper Losses (Pc)
2.2W
Transformer 2
230/12V transformer |
Open Circuit
Iron Losses (Pc)
2.5W
Current (I)
32.5mA
Short Circuit
Voltage Short
Circuit (Vsc)
Current (Ip)
50V
0.88A
Voltage Primary
230V
Copper Losses (Pc)
3W
Transcribed Image Text:Transformer 1 400/115V transformer Electrical Machines Transformer test results Open Circuit Iron Losses (Pi) 1.5W Current (I) 8.3mA Short Circuit Voltage Short Circuit (Vsc) Current (Ip) 38V 0.124A Voltage Primary 400V Copper Losses (Pc) 2.2W Transformer 2 230/12V transformer | Open Circuit Iron Losses (Pc) 2.5W Current (I) 32.5mA Short Circuit Voltage Short Circuit (Vsc) Current (Ip) 50V 0.88A Voltage Primary 230V Copper Losses (Pc) 3W
regulation
is (Res cos (0) + Xessin (0))
is (Rescos (0) + Xessin (0)) + Vs
× 100%
Transcribed Image Text:regulation is (Res cos (0) + Xessin (0)) is (Rescos (0) + Xessin (0)) + Vs × 100%
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