what is vfd(variable frequency drive)?type of vfd.

Answer Posted / faiyaz ahmad

VFD-vfd stand for variable frequency drive-its controller which is used to control the motor turbine and cooler fan in the process industries its control the speed of motor and cooler fan it can increase the speed and decrease the speed of motor.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

1711


Explain Gas Turbine startup and shutdown sequences

3814


Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...

1836


what is interlock system and why we use of this?

1445


For what reason would you possibly be compelled to make use of a Smith Predictor. Explain the idea behind the operation of this device.

1502






How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer

2314


why we are using magnet for calibration of gas detector?

1810


I installed the smartplant instrument v8, but can not be opened, that always said: "INTools 2007 hardlock no found". So Could you help me how to do for that?

1642


principle of automatic votage regulator

1670


Difference between ultra sonic flow meter

1553


wich is coming the first HAZOP OR SIL

2313


how can leve transmetter calibate in feild .and also put cv and flow plz .....

1770


Describe how to use megger to measure the earth resistance and insulation resistance

1701


Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem

1734


what diffrence b/w plc s7200,300,400

1680