what is the diffrence between dol and star delta strater?
why star delta starter used instead of dol?
Answers were Sorted based on User's Feedback
Answer / manish
Direct On Line( DOL) starter takeS Full load current
Ist=Ifl But STAR/DELTA starter which during starting of
motor , connected terminals with STAR which limits Ist
=Ifl/1.732*Ifl. Thus starting current can keep with in
limit.
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / 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 |
Answer / sivananda samantara
dol strater used in small amount of load sector,stardelta
strater used in big amount of load.stardelta used for
control first pick load then convert to normal by timer
setting.
| Is This Answer Correct ? | 6 Yes | 2 No |
why capacitor rating measure in KVAR. ?
Im designing APFCR Panel for 600 KVAR.I need to calculate the full current so that i can choose the capacity of isolator/Breaker.Kindly suggest with formula.
Is there any decided or standard frequency to check the meager testing of transformer, DG set, LT Panel in the industries in a year. I means how many times we should be check the same.
what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network
WHY THAT THREE COLORS CHOOSEN IN 3 PHASE? WHAT IS MEAN BY RYB?
in star connected 4wired transmission system ,what happen if the neutral is grounded . or not grounded. which is significant and y
Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?
which type of motor using in drilling machine ? & who to produce very high torque in drilling machine?
1 Answers National Drilling Company,
Why single phase induction motors are not self starting ?
what is ramping rate of generator
why the voltage transmission is always in a multiple of 11? e.g. 110 V, 220 V, 33 kVA, 11 kVA
What is the function of the generator exciter?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)