what is phase voltage and line voltage? in line voltage how
415v is obtained?

Answer Posted / will

In star connection: Line voltage = sqrt(3) phase voltage.
In Delta =line voltagae = phase voltage

that means phase voltage is the voltage measured between
the phases e.g between R&Y Y&B R&B.and possible in both
star and delta.

Line voltage is the voltage measured between one line and
Neutral e.g between R&N Y&N B&N .and possible in star.

Is This Answer Correct ?    47 Yes 84 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Please elaborate th´evenin’s theorem?

686


how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment

1160


How many types of circuit loads are there in a common electrical circuit?

676


Is it possible to make a 5P10/ CT Ratio 50/1A Burden 5VA

1222


WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

5583






what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

1765


What is the resistance of the field winding of a d.c. Shunt generator kept low?

629


What is the control action?

632


What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?

1371


What is the difference between AC and DC injection methods for rotor earth fault protection

1686


Which type of questions well asked. ?

1291


How will change the frequency in distribution side?

1363


Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.

1462


How to calculate the phase to phase clearness of HT /// LT bus bar?????

1584


why the colour of insultor stack , petticoat is brown. Is it has some technical reason.

1569