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Question
Explain principle of Soft-starter & how its working???
 Question Submitted By :: Arpit
I also faced this Question!!     Rank Answer Posted By  
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 1
in this starter we using mainly 2 contrctor. 
Is This Answer Correct ?    35 Yes 20 No
Vipupk
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 2
soft stater working in 2 contectter in use by stating
current in soft stater load in full rpm in dol contecter
 
Is This Answer Correct ?    15 Yes 25 No
Vipul
 
 
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 3
In soft staretr current is gradually increased which is
save the power loss & also the motor friction in
unnecessarily used.
 
Is This Answer Correct ?    21 Yes 15 No
Sushil
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 4
soft starter also use to prevent the motor heats up & loss
of wear & tear of friction losses.
Also soft starter use to prevent the loss of power.
 
Is This Answer Correct ?    18 Yes 12 No
Sushilkumar
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 5
Softstarter is used for good starting tourch with lesser
starting current
 
Is This Answer Correct ?    23 Yes 4 No
Prashant
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 6
Soft starter is a device which controls satarting Current
of the motor. it start the motor from 0 to 100% slowly.
meanwhile it save the electrical power and reduce the loses
and starting tarque.
 
Is This Answer Correct ?    21 Yes 4 No
Muhammad Ashraf
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 7
motor life time is increased
reduces mechanical stress on motor
power is saved
 
Is This Answer Correct ?    5 Yes 8 No
Asif Khan
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 8
Mainly Induction Motor takes 5-6 times of FLC while starting
in DOL mode.So soft starter is used to start the motor for
reducing starting current and smooth starting.Softstarter
which gives the voltage from 30% to 100% percentage of
voltage by certain time(Its in seconds) to the motor.By
means of thyristor softstarter is controlling the
voltage.After 100% voltage reached,the inbuilt DOL bypass
contactor is come into picture.
Advantages of softstarter:Motor life be good,Mechanical
equip life be good.
Disadvantage:It is mainly not applicable for heavy starting
load,Harmonics
 
Is This Answer Correct ?    24 Yes 2 No
Boopathiraj.s
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 9
Soft starter mainly used to start reduced viltage and reduced
frequency prportional to voltage which in turn keeps v/f ratio
 
Is This Answer Correct ?    0 Yes 11 No
Satyanrayan
 
  Re: Explain principle of Soft-starter & how its working???
Answer
# 10
Soft starter is a device which controls satarting Current
of the motor. it start the motor from 0 to 100% slowly.
meanwhile it save the electrical power and reduce the loses
and starting tarque.
 
Is This Answer Correct ?    8 Yes 2 No
M.a.bhatti
 

 
 
 
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