What is power factor ?What are the benefits of improved
power factor & how. Please explain with examples.?
Answer Posted / mehul g. c.
power facter - it is the sine angle between voltage vecter
and current vecter.
suppose you have 1.5 kw watt motor running on 230 volts and
power facter of your motor is .65 than your current requirement
i =p/volts*power facter
i =1500/230*0.8
i =8.15 amp.
and if you will improve power facter of your motor up to
0.85 than current requirement is
i=p/volts*power facter
i=1500/230*0.85
i=7.67 amp.
as you can see current taken by your motor is less if you
will improve your power facter.
advantages in big inductive machine & load.
1) current is less so losses should be less.
2) less current decrease your cable size & cost
3) voltage regulation should be good.
4) rating of switch gear will less.
and finally you will get some advantages from government if
you have big factory.
| Is This Answer Correct ? | 30 Yes | 6 No |
Post New Answer View All Answers
In motors how many types of cooling systems were used?
how do we calculate length of starting time and repeated starting of a direct online starter?
why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A
what is cathodic protection and why it use in industries?
EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?
what is the effect of vector group while phase sequence of a generator changes,whether the vector group changes or not
What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?
Difference between earthing & grounding.?
What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer
what do you mean by plant earthing system.
Meter p.t. ratio= 3×230/400 , c.t.ratio = 3×1 (2) A what is m.f.
How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?
what is the Transformer Impedence?How can calculate?
Pleae send me last 5 years of Question book about RRB chennai.
what is settable hystersis protection? If any body knows plz kindly post the answer..