Explain principle of Soft-starter & how its working???

Answer Posted / esveekayzee

for starting a rated motor with a DOL starter which draws 5-
6 times of load current initially which causes voltage
drops in line while a soft starter takes comparatively less
current and gradually decrease to the rated current.
but the main draw back of soft starter is its torque
remains low at the starting.

Is This Answer Correct ?    4 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

State nyquist stability criterion.

632


How to measure size of cable on a given load

1377


sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

1373


why do we lay up the core of a cable?

1600


how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.

1446






what will happen if OLR CT in all phases are short circuted

1673


What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.

1903


What is electrical grounding?

628


State and define norton’s theorem?

774


in control panel, how can i measuring the distance between one bus bar to another bus bar. then now only for bus bar. in mpcb and contactor also. that means one mpcb to another mpcb how much distance? how can i calculate that.

1835


what is the meaning of neutral displacement ???

2248


According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

3687


How npn and pnp transistor works

630


how can check the resistance of battery contact?

1766


how we sesign the transformer give some specifion regarding design of transformers

1465