Motor running trough VFD, if voltage reduced speed will be?

Answer Posted / gennadiy

Yes, the voltage in the simpliest V/f control is decreased proportionally with the speed decreasing. V~f in linear V/f control and V~f*f in parabolic V/f control (for pumps and fans).

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what are the different kind of cables used for transmissions?

817


which type of stability limit is higher,steady state or transient? why?

1552


for compensate 315mh inductance ,how many capaciance required?

1699


what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1585


What is the practical way to calculate the cable size for known ampere load?

1033






Where servomechanism is used?

724


should %impedance be high or low in a power transformer? if so why?

1566


Hi, Next week Iam appearing RRB exam for section engineer. So help me to get modal question papers for this position. Iam very thankful to you. Whether question will be fully techanical format or general form. Please give me a details regarding this exam.

1548


what is the maximim current drawn by 1 phase and three phase welding machine

1532


Pl. give me checklist for installation & commissioning of machine tool.

1869


why we are using earth pit in sub stations.?

1684


What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)

1239


What is contract demand in solar system?

1241


What is the difference between vector surge relay (78) and Pole slip relay (98G)

774


Whether amorphous core transformer is commercialized or not:Name of company making amorphous core transformer and what are different rating?

1453