I have suguna 3 hp pump for my agreeculture work.It deliver
the water from 45 feet well .I suffered by powercut.During
powercut i got 2phase supply only .My question is can i
run the pump in 2 phase supply using capacitor?.Can u
explain me how to connect the capacitors?
- 2 Answers
- 3499 Views
- I also Faced
- E-Mail Answers
Answer Posted / wareagle
You can also use capacitors to create a "phantom" 3rd phase
from the other 2. This may be what you have seen, but what
you probably didn't know is that this severely robs the
motor of power capacity. The motor runs severely unbalanced
and has a lot of what are called "negative sequence
currents" because of the 1 phase power and because the sine
waves are 180 degrees apart on the 2 "real" phases,
compared to being 120 degrees out on true 3 phase. Negative
sequence current produces negative torque in the motor and
causes heating without doing useful work, meaning that it
will severely overheat under load. For this reason, you
must derate the motor by at least 50%, some even say 66%.
So that means if you have a 15HP motor, you had better not
need more than 7-1/2 or even 5HP out of it if you are going
to do this.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is meant by positive and negative feedback?
what is the difference between skin effect
is it possible to say motor horsepower number without seeing name plate(when name plate damaged)
how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?
1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?
I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR
What are two contours of nichols chart?
explain the function of brush less dc motor?
What is the formulae of Megger value for a A.C.Motor
can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...
can u describe the method used for protection of transmission line.
how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids
how to calculate the battery AH
State kirchoff current law?
What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?
