Kindly give the brief explanations for checking 12.5 kvar
440V, 25 KVAR 440V, 12.5KVAR 690V, 25 KVAR 690V capacitors
microfarad values. what is the microfarad values for the
above four type of capacitors, and give the formula
explanations briefly. I know F-50HZ, voltage, and capacitor.
1)If this is only 1 capacitor and this is the voltage
between capacitor terminals:
Cap=10^9*Q/(Voltage^2*2*pi*frequency) if Q is in kVAR and
capacity in microFarad.
pi=3.14159
Cap=10^9*12.5/(440^2*2*pi*50)=205.5 mF
2)If this is reactive power of 3 capacitors in Y connection:
Voltage at a single capacitor terminals will be 440/sqrt(3)
=440/1.73=254 V
Reactive power of a single capacitor will be 12.5/3=4.167
kVAR
Then the capacity of a single capacitor will be :
Cap=10^9*4.167/(254^2*2*pi*50)=205.5 mF
3)If this is reactive power of 3 capacitors in Delta
[Triangle] connection:
Voltage at a single capacitor terminals will be 440 V
Then the capacity of a single capacitor will be :
Cap=10^9*4.167/(440^2*2*pi*50)=68.5 mF
If Q=25 kVAR Voltage=440 V then the capacity of a single
capacitor will be :
single and Y=411 microF ; Delta=137
If Q=12.5 kVAR Voltage=690 V then the capacity of a single
capacitor will be :
single and Y= 83.6 microF ; Delta=27.85
If Q=25 kVAR Voltage=690 V then the capacity of a single
capacitor will be :
single and Y= 167 microF ; Delta=55.7 microF
Is This Answer Correct ? | 1 Yes | 0 No |
will we have to design the UPS differently for both i.e. if we want to connect the two batteries in parallel and/or we want to connect the two batteries in series ?
1) Why distributiion system decided 11 kv, 33 kv, 66 kv, 132 kv, 220 kv, 400 kv, 2) In 3 Phase line terminal of capacitor, why used for power factor improvement. 3) Why used rating KVA in transformer?
what r PID controllers?why they r used?what is there purpose?plz Explain in detail
How many types of AC current?
can a generator with 15AH specified battery for starting can be connected to a battery of greater capacity?
What is Tan Delta Test
I have raw material for making Compact-Choke for flourscent lamp of 40 Watts. We are suppose to get 0.4 amps output at end. but we are getting 0.42 or 0.44 amps and above. We have done many testings in different but nothing worked out. Please suggest me how to get the correct output. We are using 1. core winding of 700 windings of aluminium 2. E-shape iron fillings and I-shape iron fillings to surround the winding.
how can see the ac indoor or out door ac which Tr
How to decide whether A / B / C / D curve type MCB should be used?
HI, I want to buy a new Xformer to my plant. what are the main parameter should I check ( Xformer rating is 16 MVA)
What are the advantages and disadvantages of negative feed back?
Types of circuit breaker