Power Factor Correction
Posted 21 June 2009 - 02:00 AM
How can we add capacitor bank to a new installation which has inductive loads such as motor and fluorescent lights without knowing the total power factor?
Posted 21 June 2009 - 06:43 AM
Probably you would not do without a special automatic appliance which monitors the disbalance and regulates capacitance needed.
Posted 21 June 2009 - 07:06 AM
All the best, I hope having not said an utter nonsense.
I meant doing it on the major feeder at that place - applying appropriate cap-s and with all the safety measures.
Posted 21 June 2009 - 12:57 PM
Yes, I understand that but what I meant was how do we estimate the size of capacitor bank(bulk correction) during the designing stage of a new electrical system, say for a high rise building or an industrial plant? Are we supposed to take in account the power factor of each load which will be connected to the system? Is there any other method?
Posted 21 June 2009 - 05:27 PM
Posted 02 July 2009 - 03:28 AM
Posted 04 July 2009 - 05:32 AM
You do need to have some idea of what the reactive current is before you can neutralise it.
If you have motors on the supply, it is normal for the name plate to indicate the full load power factor.
From this information, you can calculate the reactive current for each motor. You can then add all the reactive curents and apply correction for this current.
The best method is to measure the reactive current or the power factor.
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