Answer / sagar

Q = VIsin(fi)

capacitor current = I = Q/Vsin(fi)

For , 230 v and power factor angle 90 ,then

I = 1/230*sin 90 = 4.32 amp.

If power factor angle is 36.89 (power factor 0.8)
,then

P/Q = kw/KVAR = VIcos(fi)/VIsin(fi)

P/Q = cos(fi)/sin(fi) = Tan(fi)

P = Q tan(fi)

P = 30 tan(36.89) = 30 * 0.75 = 22.5 Kw

Answer / kalanidhi

Current calculation for 200 kvar capacitor


CAPACITOR VOLTAGE CALCULATION

#System Voltage (MV) : 433V (WITH +- 5%)
#Voltage drop across (Maximum) : 433 x -5% = 21.65V
Capacitors working : 411.35 Volts.

CAPACITOR CURRENT CALCULATION
KVAR Calculation at 433 Volts.
KVAR 433 Volt (433)2
= ------------ 200KVAR
(411.35)2

187489
= ----------- 200 KVAR
169208

= 1.1 x 200 KVAR = 221.59

= 221.59 KVAR

Current for 221.56 KVAR at 433 V = 221.59
------------------------ x 1000
433 x 1.732 x 0.6

= 492 Amps.

Answer / mohammad rafique

dear,sir

my answer is 1 kvar = 1.3122 will be

my 2nd answer is 30 kvar= 44.5 kw will be and the mantioned
by powr factor like this,current cos(f1)and (requred cos(f2)

if my answer is correct then i shall be obligged to you

Answer / prasenjit chowdhury

Full load current 350 Amps, Line Voltage 430. 1 KVAR = How many Amps. What is the formula or calculation to sagest the capacitor seating on load.

Answer / srinu

Kvar: 1.732* v*i
1kvar=1000var
I=1000/1.732*415 for three phas
I=1.392amps

Answer / venkatesh o

normally Formula
Kvar= 1.732*V*I*Sin(pi)
If Pure Capacitor 90 Leads so The power factor is Unity(1)
Assume *V=415
*Sin(90)=1(But Reactive power is zero)
since I=Kvar/1.732*V*1 Eg. 1000/1.732*415*1=1.39A
other formula for Determine KW=KVAR/tan(pi)or KW=VIcos(PI)
Assume * cos(0.9)
since KW=KVAR/tan....Equ 1, take the cos invesr is equal to (0.9)=25.8419 ...Equ 2
KW=30KVAR/tan25.8419=61.94KW OR
they are more formulas
* KW=KVAR/tan(pi)
* Kw=KVA*cos(pi)
* Kw=SQroot(KVAZ^2-(KVAr)^2

Answer / botsar joseph antony

Ic=IsinQ1-I'sinQ2
where Q1 = phi1 and Q2 = phi
I is the curent, before correction and I' is the current,
after correction.
Ic is the subject of formula.

Squirrel cage induction motor has constant A slip B stator current C rotor resistance D speed at all load

1 Answers  

i need some project topics along with circuit diagram in the electrical adnd electronics engg and also give ome website regarding projects.my mail id is thenmozhi2k7@gmail.com .please help me.

0 Answers  

Formula to calculate amps rating when we are having only the width & thickness of the coppper ?

2 Answers   BEL,

How do you think they do earthing or grounding in ships and aeroplanes?

9 Answers  

How many types of timer ?which timer are used star delta feeder

1 Answers   BMM Ispat,

What is the Difference Between MCCB & ACB & VCB

3 Answers  

how can we say that stator magnetic field rotates with synchronous speed?can we derive?

0 Answers  

what should be the BDV value Of 11/132kv power transformer

3 Answers  

Dear Sir, we met a disaster with our 62.5 kva genset, after rewinding we informed by our contract engg that due to return current coming in neutral & impropper earthing this happend. But after all set up & load balance we checked & found again we have about 20 to 32 amp return current on neutral. we have 12 airconditioner + 12 mini fridge on single phase line. Pl suggest any idea to solved this problem

3 Answers  

what are the problems that generally occur in power flows??

1 Answers  

WHAT DRESS I SHOULD WEAR WHILE ATTENDING AN INTERVIEW? PLEASE SPECIFY THE STYLE AND COLOUR. CAN A LADY WEAR CHUDIDAR FOR AN INTERVIEW?

6 Answers   Wipro,

What will happen if i connect the delta winding motor to star input.

1 Answers