what is the diffrence between dol and star delta strater?
why star delta starter used instead of dol?

Answer Posted / erharisheee51

DOL TAKES FULL LOAD CURRENT WHERE AS STAR DELTA STARTER LIMITS THE STARTING CURRENT BY FIRST STARTS AT STAR THEN CONVERT IN TO DELTA , WHER EIN STAR IT LIMITS BY I/1.732, IN THE PLACE OF STAR DELTS STARTER WE SHOULD NOT USE DOL- DIRECT ON LINE STARTER , WHICH IMMEDIETLY STARTS AT FULL SPEED.

Is This Answer Correct ?    7 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.

1410


I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

1982


I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.

1220


What is center gravity load in substation?

1940


importance of reactive power management

1589






How to calculate the Harmonics losses in terms of cost/unit.

1557


What is zero of the system?

651


Why IR value of the (HT cable Plus synchronous motor) is less while individually having IR values in GΩ?

1352


What is a copper loss or i2r loss pc?

712


Write a note on Treatment for electric shock.

1420


What are the basic elements used for modeling mechanical translational system?

611


I am inpecting a 10kVA UPS what tests should i do and should i observe?

1799


How Self works in DG set

1419


What is 100% protection of generator? Why 100% is not used but 95% is generally used?

625


salam,hi, i need to know what the spesification of 300amp msb...

1597