Pls explain about vfd control?Where it is used, Give some
example?
Answer Posted / sakkaravarthi soganur arakonam
VFD variable frequency drives and also known as vvvf
variable voltage variable frequency and also konws vsd
variable speed drives,vfd works on v/f ratio means if
frequency increase voltage will increase at rated voltage
if frequency will increases voltage ramainig constant
its used conveyors ,cranes,higer LT motor,
| Is This Answer Correct ? | 3 Yes | 3 No |
Post New Answer View All Answers
HOW TO CALCULATE THE VT SIZING?
How will calculate losses in an multi core Aluminium LT cable of different sizes & upto what length we can use a LT Cable ?
How to decide DO set rating of Transformer?
i have interview in Pepsi company what type of question will ask please send the question and answeer
what about SAP/MRP regarding manufacturing of electric motors and all drives?
how can we calculate the ratio of caustic soda and water in lrs.
what is the star delta connetion and how can do it a three phase motor with control witing with picture
Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
how ct burden,magnetising current,ratio and knee point voltage are related & derived
why the voltage and current in a long transmission line are called travelling wave?
what do you mean by plant earthing system.
What is the purpose of using busbar mounting fuse?
why booster transformer is used in sumpners test conducted on transformer????
What is the difference between PLC and Embeded system
List examples of current sources?