What core magnetic balance test of transformer?
How to do this test in a three phase Star delta (star-LV,
Delta-HV) transformer?
How to measure and where to measure?

thanks and regards
Austin

Answer Posted / engr. l.o. osuji

Hi,
You may use either single-pase on the star side of the
transformer as in Answer #2 or apply two line voltages i.e.
apply 415V on A and B terminals on the HV-side of the
transformer and follow the steps of Rajukumar Sripelli in
Answer #5.

Is This Answer Correct ?    6 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain the propagation of harmonics in the network and influence of phase angle of harmonics.

1500


What is bode plot?

811


draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

22134


What type of wiring series or parallel is used for conventional and addressable type FAS & why?

1379


Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

1642






How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?

1512


If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

1741


HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com

1712


What is center gravity load in substation?

1939


what is rocking arrangement in arc heating

1685


why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

2388


I NEED RRB SYLABUS FOR JE ELECTRICAL ,PLEASE SEND TO MY E- MAIL ID joo28_eee@yahoo.co.in

2400


what is the isolation transformer. what is the isolator?

1609


High voltage test procedure of in swgr board. why should measure millivolt drop on testing time?

1636


WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?

1333