How to calculate KW saving for power factor correction from
0.92 to 0.98 at 350KW load?

Answer Posted / adil naseem(pakistan)

cos(pi1)=0.92 //old power factor
cos(pi2)=0.98 //desired power factor
the forlmula for saving of Kw is:
total Kw= 350kw



Saving KW = total kw * (tan(pi1) - tan(pi2))
=350 * (0.4259 - 0.203058)
=77.9947Kw is the answer!(100% correct)

Is This Answer Correct ?    8 Yes 9 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is Fault level? why it is calculated? how will u decide same for our plant?

1572


solar inverters was not connected to the nuteral link .this nutwral possible to any other systems

1353


Explain bypass capacitor?

654


what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)

2140


how to calculate IR value of 33KV cable ??

1342






why the field winding in dc motor is not short circuited eventhough dc supply is applied across the winding

1410


how to Select Lighting arrester? What r the parameters to be considered for the selection of Lighting arrester ?

1197


hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

1628


Hi.. I am a BE GRaduate in E&E. I have 8.5 Experience in Tendering & Estimation field. I have done SAP SD course few years back. But due to some reason i failed to get job in that field and continued my own field. Now I am thinking of changing into SAP seriously. How should i go ahead???

1478


how to calculate the capacitor to maintain power factor?

1668


How to calculate the multiplying factor for energy meter with ct ratio given

1545


whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

1047


TRAFO 1. WHY BREATHER IS USED. 2. WHY OIL GOES DOWN IN CONSERVATOR TANK. 3. WHY WE ARE TAKING OIL SAMPLE TAKING FROM BOTTOM OF TRANSFORMER. 4. HOW TO CHECK IR VALUE OF TRANSFORMER. 5. WHY OLTC HAVING BUCHHOLZ TRIP ONLY; WHY NO ALARM. 6. OFF LOAD TAP CHANGER OPERATION PROCEDURE. 7. TR. SHUTDOWN / ISOLATION PROCEDURE. 8. WHEN THREE TRS. IN PARALLEL, ONE TR. IS NOT SHARING THE LOAD – WHAT IS REASON AND WHAT YOU WILL DO. 9. WHY TR. HAS OLTC IN HV SIDE. 10. WHAT IS % IMPEDANCE. 11. WHY TR. RATING IN MVA. 12. WHAT IS VECTOR GROUP IN TR. 13. CONDITION FOR PARALLEL OPERATION OF TRS. 14. WHAT IS TERTIARY WINDING. WHERE IT WILL BE. 15. IF TR. TRIP ON BUCHHOLZ OR TAP CHANGER RELAY, WHAT YOU WILL DO. 16. DIFFERENCE BETWEEN OIL TEMP. AND WINDING TEMP. PROTECTION 17. HOW WINDING TEMP. IS MEASURED IN CAST RESIN TR. 18. DIFFERENT TYPES OF FAULTS IN TR. Trafo - Page-1 of 2 19. WHAT HAPPENS WHEN TR. CHARGED FROM LV. 20. WHAT WILL YOU DO IF MEGGER READING SHOWS ZERO BETWEEN LV WINDING AND EARTH. 21. CAN WE INTERCHANGE BUCHHOLZ RELAY OF MAIN TANK AND OLTC TANK. 22. IF THE LINE BETWEEN BREATHER AND CONSERVATOR TANK 23. LOCKED, WHAT WILL HAPPEN DURING LOAD CYCLE. 24. WHAT IS THE FUNCTION OF OIL SEAL IN BREATHER. 25. WHAT ARE LOCATIONS FOR BUCHHOLZ RELAY FIXED IN POWER TR. 26. WHAT ARE CHECKS IN POWER TR. DURING MAINTENANCE. 27. WHAT IS IMPORTANT WHEN WE CHECK OLTC OPERATION DURING MAINTENANCE. Trafo - Page 2 of 2

2003


how much GROUND & NEUTRAL VOLT maintain in data center.

1540


How to calculate earth wire load by formula

1970