A 3-phase transformer is supplying a 60 KW load at 0.8 lagging PF.The following per-phase values are given:Xeq,s = 2.2 Ohms,XM.s= 880 Ohms.Reg.s =0.8 Ohms,Rc= 1460 Ohms,136.87°,A,and = 1618 36.87°The current I,=84.5Volts.The efficiency of the transformer is:Colont

A) The equivalent circuit is reffered on secondary side Core case of 3ϕ transformer Pc = 3…

A 3-phase transformer is supplying a 60 KW load at 0.8 lagging PF. The following per-phase values are given: Reg.s =0.8 Ohms, Xeq,s = 2.2 Ohms, Rc.s= 1460 Ohms, XM.s= 880 Ohms. -36.87°, A,and P = 1618 36.87° The current I,= 84.5 Volts. %3D The efficiency of the transformer is:

A 3-phase transformer is supplying a 60 KW load at 0.8 lagging PF. The following per-phase values are given: Reg.s =0.8 Ohms, Xeq,s = 2.2 Ohms, Rc.s= 1460 Ohms, XM.s= 880 Ohms. -36.87°, A,and P = 1618 36.87° The current I,= 84.5 Volts. %3D The efficiency of the transformer is:

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 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...

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Concept explainers

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.

Question

A 3-phase transformer is supplying a 60 KW load at 0.8 lagging PF.
The following per-phase values are given:
Xeq,s = 2.2 Ohms,
XM.s= 880 Ohms.
Reg.s =0.8 Ohms,
Rc= 1460 Ohms,
136.87°,
A,and = 1618 36.87°
The current I,=84.5
Volts.
The efficiency of the transformer is:
Colont

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