What is basic difference between Soft Starters And VFD
drives?

Answer Posted / dikesh patel

we are using soft starter ofallen bradely flex model for
180 kw hall screw motor configuration of s s is in delta
mode i always observer the starting kick around 9oo amp flc
of motor is 180 amp how soft starter is not limiting its
starting current up to 400/500 amp it is almost about the
stardelta kick then how we can say that soft starter is
meant for limiting starting current kick

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

dear all i am kumara now current working in electrical designing of control and relay panel i want learn some substaion design then any book are available. pls mention name and authour

1508


For high frequency application we use which transformer?

1346


Write the force balance equation of ideal dashpot element.

844


i want to model paper for section engg.

1565


What are the different towers used in 132kv transmission line? what are the differences between the P,R,S towers used in 132KV and detailed explanation

1443






I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

1774


how to calculate regulation constants for over head lines? and what are the regulation constant for raccoon conductor at different voltage level and different P.F?

1461


what is thresold of perception

1465


Which device is used for the source of emission of electrons in a crt?

731


What is the difference between the transmission line and distribution line?

663


why sielent pole is used only in hydro generators and not in turbo generators

3353


What is resonant peak?

683


In the ACB breaker capacity is 2000Amp but this each phase taken 1250 But total beldibg load is 600amp or 700amp watt is the problem

1503


Sir, I have applied for the of Jr.engineer(Electrical & Electronics) & ASST. LOCO PILOT at ALL RRB BOARDS. please send me all RRB Boards solved papers in the year of 2001 tO till date. i requested send me the papers to my id as soon as possible (jet_0991@yahoo.com). (This is very urgent) Thank You,

1404


EXPLAIN THE ESSENTIAL FACTORS WHICH INFLUENCES THE CHOICE OF SITE FOR A HYDRO ELECTRIC POWER PLANT

1552