Normally the
starter used to
reduce the
starting
current.but the
dol starter do not
it,so why we use
it?
Answer Posted / m s venkateswara rao
Normally Starters are used to reduce the starting current. But selection of the starter is based on the type of application whether starting torque is required high, medium, normal.Normally any motor during starting will take 4 to 5 times of full load current.Up to 10 Hp usually will use DOL because of motor full load current is 13 Amps and during starting will take 65 Amps as a result supply system dos not get affect. Above 10 HP usually motor full load currents are high and during starting will draw high starting current which will affect out supply system ie voltage drop, for which all associated equipment connected with the system will be affected.Usually above 10 HP motors with a application of medium torque will use star/ delta starter to reduce starting current. If the application is required high starting torque will use dol starter irrespective of the rating of the motor.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is corkscrew rule?
What is the necessary condition for stability.
Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.
How can we checked Killo Watts of Motor & Alternator?
I need the list of Universities who have summer intake for BS degree in Electrical Engineering.?
What is the formula of frequency ?
how to calculate earth fault relay current and CBCT ratio
WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB
what is protection class current transformer.
who many types of fire explane with exmple
which types of relay used in acb and vcb?
Why the magneti fields are not passes from southpole to north pole
what kind of quetions will ask in BHEL in interview? Plz help me?
LET ME NOW MORE ABOUT icu and ics for circuit breaker. how we calculate the rating of circuit breaker and i c u and ics values
Differentiate between magnetic field and magnetic flux?