what is the working difference b/w softstarter and
Variable frequency drive ?

Answer Posted / senindra123

soft starters is using for smooth starting only which will
be by paseed while running.

variable frequency drives are using for smooth atarting and
running. while running we can control the speed of the
motor also.

Is This Answer Correct ?    18 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain the operation principle, advantages and disadvantages of the following converters: a) A 12 pulse converter b) A Switch-mode inverter c) A thyristor inverter

1498


how can we say that stator magnetic field rotates with synchronous speed?can we derive?

1308


Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

1204


How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

1890


Explain about how is it working Earth fault'relay and wahts the resistance value of earth bed

1032






What is bridge rectifier and explain with details

1485


What is the disadvantage in proportional controller?

638


Why do we require transformer with less specific weight if supply frequency is increased?

1129


how to estimate wiring ins roughing ins. and boxes

1958


1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

1406


3 phase induction motor connection star or delta while using ac drive motor is .75 to 5.5 kw

1528


why wire sizes are 3/29 or 7/29 and why not wire sizes are 2/29 or 6/29?

4663


how to select fuse rating for a 3-phase motor ???

1347


On what cycle does thermal power plant operate?

654


What will happen if a dc source is given to a tubelight. Will it work or wont it work....

1492