Size of Capacitor Bank f Electrical Load Detail Supply System 3 Phase Supplay Voltage 415 Volt Supplay Frequency 50 Hz Total Electrical Load 516 Kw Load Current (Enter only if You Know) 897 Amp Efficiency 100 % 1.0 Final Load Current 897 Amp Capacitor Voltage 415 Volt Calculated Old Power Factor (Cosф1) 0.80 0.8 Targeted Power Factor(Cosф2) 0.98 Capacitor Connected in Star Daily Working Hours 24 Hr. Tarrif Charge/Kva 100 Rs Tarrif Charge/Kw 10 Rs Capacitor Cost/Kva 60 Rs Annual Intrest & Depriciation/Capacit 12 % Enter Old Power Factor (Cosф1)
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Size of Capacitor Bank for Power Factor Correction
Electrical Load Detail RESULT (Size of Capacitor Bank & Annual Saving)
Size of Capacitor BankSupply System 3 Phase Leading KVARSupplay Voltage 415 Volt Leading KVAR supplied by each PhaseSupplay Frequency 50 Hz Capacitor Charging Current (Ic)
Capacitance of CapacitorTotal 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 BankFinal Load Current 897 Amp Size of Main Fuse of Capacitor Bank
Size of Circuit Breaker (Nr. This Value)Thermal Setting of Circuit BreakerMagnetic Setting of Circuit Breaker
Capacitor Voltage 415 Volt Size of Cable For Capacitor ConnectionCalculated Old Power Factor (Cosф1) 0.80 Before Power Factor Correction
0.8 Max DemandTargeted Power Factor(Cosф2) 0.98 KVA Demand ChargeCapacitor Connected in Star Unit Consumed/YearDaily Working Hours 24 Hr. Energy Charge/YearTarrif Charge/Kva 100 Rs Total Annual CostTarrif Charge/Kw 10 Rs After Power Factor CorrectionCapacitor Cost/Kva 60 Rs Max DemandAnnual Intrest & Depriciation/Capacitor 12 % KVA Demand Charge
Unit Consumed/YearEnergy Charge/YearTotal Annual CostCapital Cost of capacitorAnnual Inte and DepTotal Annual Cost
Annual Saving Due to Capacitor BankAnnual Cost before P.F Correction: Annual Cost After P.F Correction: Annual Saving
Enter Old Power Factor (Cosф1)
Size of Capacitor Bank for Power Factor Correction
RESULT (Size of Capacitor Bank & Annual Saving) Configuration of Capacitor Bank
282 Kvar Size of Capacitor Bank 282 Kvar
94 Kvar/Phase Capacitor Voltage 415 Volt
392 Amp No of Steps 8 24
5200 μF Targeted Power Factor 0.98 98
3 No of 94 Kvar CT Ratio 300 5
282 Kvar , 415 VoltSteps & Size of Capacitor in Capacitor Bank
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 68.17
4520160 Kwh 8 100 4 94.00 136.34
45201600 Rs
45266100 Rs
527 Kva
52653 Rs Total: 300 12 282.00 409.03 14520160 Kwh
45201600 Rs :Result:
45254253 Rs
16920 Rs Actual Size of Capacitor Bank 300 Kvar
2030 Rs Minimum Main Breaker Rating 613.5 Amp
45256283 Rs Step Combination 1,1,1,1,1,1,2,4,,,,C/K Value 0.58
45266100 Rs Design of Capacitor Bank OK45256283 Rs
9817 Rs
Jignesh.N.Parmar, www.electricalnotes.wordpress.com [email protected]
0.60 0.75
Kw 2.5 $Kva 5 £Star 7.5 €Delta 10 ¥
1 20 Rs
3 2535506075100125150175200225250300400
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