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Size of Capacitor Bank

Supply System 3 Phase Leading KVAR

Supplay Voltage 415 Volt Leading KVAR supplied by each PhaseSupplay Frequency 50 Hz Capacitor Charging Current (Ic)

Capacitance of Capacitor

Total Electrical Load 516 Kw Required Capacitor is

Load Current (Enter only if You Know) 897 Amp Required Size of Capacitor BankEfficiency 100 % 1.0 Protection of Capacitor Bank

Final Load Current 897 Amp Size of Main Fuse of Capacitor Bank

Size of Circuit Breaker (Nr. This Value)

Thermal Setting of Circuit Breaker

Magnetic Setting of Circuit Breaker

Capacitor Voltage 415 Volt Size of Cable For Capacitor Connection

Calculated Old Power Factor (Cos1) 0.80 Before Power Factor Correction

Enter Old Power Factor (Cos1) 0.8 Max Demand

Targeted Power Factor(Cos2) 0.98 KVA Demand ChargeCapacitor Connected in Star Unit Consumed/Year Daily Working Hours 24 Hr. Energy Charge/Year

Tarrif Charge/Kva 100 Rs Total Annual Cost

Tarrif Charge/Kw 10 Rs After Power Factor Correction

Capacitor Cost/Kva 60 Rs Max Demand

Annual Intrest & Depriciation/Capacitor 12 % KVA Demand Charge

Unit Consumed/Year

Energy Charge/Year

Total Annual Cost

Capital Cost of capacitor

Annual Inte and Dep

Total Annual Cost

Annual Saving Due to Capacitor Bank

Annual Cost before P.F Correction:

Annual Cost After P.F Correction:

Annual Saving

Size of Capacitor ank for Power Factor CorrectElectrical Load Detail RESULT (Size of Capacitor

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282 Kvar 282 Kvar

94 Kvar/Phase 415 Volt392 Amp 8 24

5200 F 0.98 98

3 No of 94 Kvar 300 5

282 Kvar , 415 Volt

784 Amp Step Actual kvar Power Ratio Kvar Amp

588 Amp 1 25 1 23.50 34.09

588 Amp 2 25 1 23.50 34.09

3919 Amp 3 25 1 23.50 34.09

560 Amp 4 25 1 23.50 34.09

5 25 1 23.50 34.09

645 Kva 6 25 1 23.50 34.09

64500 Rs 7 50 2 47.00 68.174520160 Kwh 8 100 4 94.00 136.34

45201600 Rs

45266100 Rs

527 Kva

52653 Rs Total: 300 12 282.00 409.03 1

4520160 Kwh

45201600 Rs

45254253 Rs

16920 Rs 300 Kvar

2030 Rs 613.5 Amp

45256283 Rs

45266100 Rs

45256283 Rs

9817 Rs

Targeted Power Factor

Actual Size of Capacitor Bank

Minimum Main Breaker Rating

Step Combination

OK

C/K Value

Design of Capacitor Bank

CT Ratio

1,1,1,1,1,1,2,4,,,,

Size of Capacitor Bank

Capacitor VoltageNo of Steps

0.58

Configuration of Capacitor Bank

Jignesh.N.Parmar,

www.electricalnotes.wordpress.com

jiguparmar@yahoo.com

ank & Annual Saving)

Steps & Size of Capacitor in Capacitor Bank

:Result:

http://www.electricalnotes.wordpress.com/http://www.electricalnotes.wordpress.com/http://www.electricalnotes.wordpress.com/http://www.electricalnotes.wordpress.com/http://www.electricalnotes.wordpress.com/

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0.60 0.75

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Kw 2.5 $

Kva 5 Star 7.5 Delta 10

1 20 Rs

3 2535506075100125150175

200225250300400

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