can u please tell me how VFD(variable frequency) drive is
used as a energy saver....?
Answer Posted / eswara rao
There are some applications where the the discharge
of a pump/fan are not constant. for the required output, it
is required to control the output valve or damper. For this
type of applications, the motor takes almost same power
whether the output is 0% or 100%
For this type of applications, VFD's are more
advantagious. Instead of controling the discharge by
controlling the output valve, if it is controlled by motor
frequency it saves the power according to the speed of the
motor.
VFD draw the power according to the speed of the
motor. So, for variable discharge applications, VFD's are
suggestible for smoother operation along with power saving.
Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
what are the advantage and dis-advantage of 3 phase 4 wire energy meter?
Dear Brother can u tell the proper size selection of cable & the fault level calculation of braker, busbar etc. pls mail me at azeemk30@gmail.com
What is the Load Capacity of Panther conductor (0.2) and dog conductor (0.2)
What is slip in an induction motor?
what clearance required for 4.5 mva dry type transformer?
How does cost of generation from hydropower plant compare with other sources of electricity?
what purpose to use excaiter in DG.?
In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)
I HAVE A 50A MCCB AS PER DESIGN LINE WIRE CONNECT UPWORD SIDE AND LOAD IS CONNECTED TO DOWNWARD SIDE TO THE MCCB.IF NOW ANY ONE CHANGE SUPPLY & LOAD(WISEVERSA) WHAT HAPPENS ? DOES MCCB OPERATION OR WORKING FUNCTION NORMAL IF YES THAN WHY THERE ARE MARKED LINE & LOAD ON MCCB.
before synchronizing an alternator,power factor is leading ,why?
The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current
with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....
Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above
How test for Ddo vector group test condition?
in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses? the second question is-generation is depends on LV winding? or LV winding design for generation voltage?