Interested to Buy Any Domain ? << Click Here >> for more details...
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
- 4378 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
Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803
Differentiate between induced emf and self inductance?
I need HT sphere gap calibration table. Can any body help me.
WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT
Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.
What is the disadventage of gland earthing(power cable) if any. ?
what's the requirement of Dy11d0 connection of 3 phase transformer?what's use of it?
How LT megger works ?
WITCH CARDS IN USE IN FIRE CONTROL PANEL.
Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?
what is the difference between megger and earth resister ??
What is the Resposiblity of Electrical Utility Engineer
Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?
What is the unit of attenuation?
how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.
