what is the principal of star delta starter?

Answer Posted / guna sekhar

induction motor draws 4times the load current of motor intially. so we use star -delta starter to reduce intial current . first the windings connected in star thereby reduces the intial current by 1/../3[root3].after certain time delay its converts winding connection to delta.

Is This Answer Correct ?    6 Yes 8 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

In Electrical 'Single Line Diagram' cable nomenclature shows "2 X 1C X 630sq.mm to be provided for one incomer. The question is how many cable to be proved for one Incomer.

1280


Define super node?

719


I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.

1590


in power generator normaly voltagr betwween esth to neutral is 0 but my work place generator show the volatge is 60v any body know why? thanks

1409


Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.

2885






sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence

1636


how to test and calculat the head and discharge in borewell compressor

1692


What is dynamo function in DG sets and draw block diagram?

1577


What is marx circuit?

643


What tests should i carry over on a newly rewinded DC Generator with voltage rating of 38 volts and current rating of 350 amps, to certify that the machine is OK?

1419


how to estimate wiring ins roughing ins. and boxes

1943


what is meant by k-rating in isolation transformer?what is k9, k14 stands for?

2239


What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?

1540


tell me about eletrical contractor

1514


what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?

1576