What is the need of motor starter?
Answers were Sorted based on User's Feedback
Answer / bharat
In almost all the motors, in starting condition, Armature
current will be very high.
To control that current, starters will be used.
Is This Answer Correct ? | 16 Yes | 1 No |
Answer / harish kumar- greenesol
to control the speed of motor through voltage , and to
start smoothly.also some of the cases we can control the
starting current.
Is This Answer Correct ? | 8 Yes | 1 No |
Answer / vincent omwikha
.To control the starting current of the motor thus avoiding
overheating of the windings.
.To avoid undervoltage hence tripping of other equipments
on the same line i.e for big motors
.Able to vary the speed of the motor
.Provides different starting/stopping points of the same
motor.
.Provides control measures of overcurrent,earthfault i.e
overload relays,circuit breakers,fuses
.Provides power isolation mechanism when one works on the
motor i.e fuses, breakers, isolators
.Able to know the current taken by the motor i.e ammeters
Is This Answer Correct ? | 7 Yes | 1 No |
Answer / mahesh
Normally starter are provided to control & protect the motor during starting & running condition . its help to control the starting current by controlling the voltage & frequency during starting in order to keep the motor winding temperature within the permissible limit.
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / parthi
The starter is used to
limit the starting
current of the motor.
The starting time motor
takes high current(5 to
6 times of its rated
current). This high
current damage the
motor windings. So the
starter is essential for
motor.
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / mrt
to control the armature(dc motor) or stator(slip ring)
current
Is This Answer Correct ? | 1 Yes | 0 No |
Which neutral is use when DG(3 Phase)is running?
current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer
Explain the working principle of Synchronous Generator and Assynchronous generator?
To check the earth condition (In plug points); the voltage between earth and Neutral is in below 5 volts. Is it correct
Why ELCB trip, when neutral touch with ground?
Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?
why rating of motor in HP?
Draw torque - speed curve and load curve of induction motor? mark operating point ?
what is back trip and re-trip in protection schemes? why these two? define me the exact function of these two?
how calculate external illumintion in a compound area. for e.g. there is one open park having 600m2 area and i have to put 40w flouresent tube fitting with pole. how shall i calculate the numbers of fitting.
how many types of cbs?with pcific ratings?
How can we measure MVAR of a 3 phase transformer.....???