Difference between DOL starter & star Delta Starter? And
where the Dol starter used upto how much HP and whereas
Star Delta vice versa?
Answer Posted / tamil arasu
DOL STARTER STARTING CURRENT IS HIGH.DOL HAVE IN STARTING
TIME MORE THEN 3 TIMES OF NOMINAL CURRENT.BUT S/D STARTER
STARTING CURRENT IS LOW.DOL STARTER NEED 1 CONTACTOR AND
1OLR, S/D NEED 3CONTACTORS,TIMER AND 1OLR FOR FULLY
AUTOMATIC.SEMI S/D NOT NEED FOR TIMER.
UPTO 5 H.P DOL STARTER USED.AND MORE THEN 5H.P USED S/D
STARTER.BUT DOL STARTER ALSO USED FOR ABOVE 15 H.P
ACCORDING TO THE LOAD.INCASE OF WE USING 10H.P MOTOR FOR
WATER PUMP WE HAVE SELECTING DOL AND WE USING FOR SAME H.P
MOTOR FOR MILL WE SELECTING STAR/DELTA.
| Is This Answer Correct ? | 24 Yes | 1 No |
Post New Answer View All Answers
why is using sensor?what is differece between photoelectric and proxmitty?
Explain the laying procedure and laying depth of submarine/subsea power cable for 220/400KV system? Also available cable diameter?
what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.
what is the ms flat constant for calculating earth mat design calculation?
what are inductive and capacitive voltage transformers.what are their applications
how to work droop ct in generating station
What is bridge rectifier and explain with details
What is the drawback of static coefficients?
what is meant by tranformer impedance?
why we cannot protect 100% winding of an alternator by using differential protection?
There is any especial requirement for motor to drive through with VFD?
What are the difference between normal application Transformer and Solar application Transformer?
What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan
5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?