Answer / jay pandya

i think if in a distribution line if pf becomes leading
then voltage leval increase so it can cause some damages to
the receiving side.

Answer / ankit

i think when the power factor at
distribution side increases, the recieving
voltage increases according to farranti
effect. But at recieving side we dont
require more than rated voltage. It can
damage the equipment by damaging the
insulation, which is not rated for that
much higher voltage....

Answer / sethu

The effects of lower power factors, no matter lagging or
leading, will have the same effects on the system such as to
increase the KVA rating of machines, increase the copper
losses, increase the cost of installation of conductors,
etc. In addition to the above, due to Ferranti effect, the
receiving end voltage will be higher than the sending end
voltage (ie) the voltage regulation will be positive.

Answer / salahudeen

dear frnds,

if pf leads then amount of power form sorce to
compensate reavtive power is very less & current value
reduced hence conductor size & swich gear size also reduced

for any clari

contact

Answer / cv

the load starts supplying reactive power to the grid if the
power factor is leading. it only means that the utility
will be applicable for benefits from the cesu.

Answer / subhani

if power factor is leading then current leads
voltage.so,better regulation can be obtained to some extent
as it increases the receiving end voltage by compensating
the voltage drop caused by lagging reactance if any present
in the netwok as all the daily used loada are lag in
nature.no compensation of line wil b required.it ensures
stability of the system.

Answer / gova

When PF is leading,this will create a same problem like
lagging PF.
i.e current taken from source is increased
Cable size increased
loss increased
eff decreased
regulation poor

Answer / osayamwen osasre anthony

if theirs is high power factor, i.e if the power factor is
close to one:
1.losses in form of heat will be reduced,
2.cable becomes less bulky and easy to carry, and very
cheap to afford, &
3. it also reduces over heating of tranformers.

Answer / subhash suthar

dear reader..,
if the pf is leading the
power system be smooth as
well as cost also decrease..

Answer / narayanan

I think power factor never become leading or more than 1,because cos has maximum value of 1

installation of subsatation of33kv

0 Answers  

What are the different condition monitoring techniques for a motor?

1 Answers   DAE,

what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

0 Answers   Jindal,

1)why the transformer rating in KVA insted of KW 2)why the secondary of ct is shorted and why the PT secondary is open

3 Answers  

This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

0 Answers  

what is power factor

6 Answers  

whats was the problem if neutral and earth got 2volt from the ups output

1 Answers  

what is relation between motor poles & motor current in 3 phase motor

1 Answers  

which transmission is cheaper ac or dc?

10 Answers  

how we calculate capacitor bank mvar for 11 kv distribution networ , and i need releation between capacitor bank with voltage, frequency, current, pf

2 Answers  

volts=230 c=10mf a=??

0 Answers  

Why we are using LA Rating 10kA in 66 kv substation

1 Answers   L&T, NMDC,