sizing capacitor banks power factor correction
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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
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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