Normally the
starter used to
reduce the
starting
current.but the
dol starter do not
it,so why we use
it?
- 4 Answers
- 8309 Views
- I also Faced
- E-Mail Answers
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
How Can you do Maintenance of ACB of 2000Amperes
1600 KVA ka transformer hi aghar lt side par 800A aur voltage 420 ho to HT side ki cable ki rating keya ho gi?
What is difference between slip rings and carbon burushes?
what will be project cost for 100 kv transformer connection under oyt scheme.
Why and when NGR panel required. Is it necessary to design a NGR panel for a 6.6kV Alternator paralleling with Grid????
The power factor of the fixed load is 0.8, now the p.f is varying from 0.8 to 0.5.
what is difference between speed mode and torque mode in motor?? explain in simple words please.
Why use the vcb at high transmission system ? Why can’t use acb?
What is the range of the stator resistance of 3 phase induction motor?
what is two point starter?
what is the difference between switch yard to residential area.and how much required it.
physical identification of HT & LT panel
Which type of motor is used in trains, what is the rating of supply used explain working principal?
it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?
in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?
