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 insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

1683


give me a clear defination of inductance,and how can u calculate inductance of a motor

2318


what is value of Jin transformer

1638


how to identify vector group of three phase transformer by voltage method?

1153


How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?

2569






please send me privious exam's queation papers of section engineer(electrical).

1600


Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

1715


why we have and use 3 phase not 2 or 4 or other in power system?

1689


we have 15 ampere variyac but we want 30 ampere variyac what we do

1418


please anybody help me to find out the BHEL trainee Exam previous year questions papers . if u ve pls. send it to surekhared@gmail.com

1506


Why space heater is required for each verical bus bar chamber? if one space heater is adequate or not for anti condensation?

2079


Role of active and reactive Power sharing in between two synchronized Generators, Droop Setting role ?

1277


WHAT IS THE MEANING OG (li = 7 In)

1528


Explain few advantages of electric traction system?

586


What is the difference between a verilog task and a verilog function?

666