Power factor (PF) is calculated and PF=cos(phi) where phi is the phase angle of the current running through a load. To find the phase angle of the current, one must know the voltage drop across the load and the total impedance (capacitance + resistance) of the load and then use Ohm's Law to find the current. The total impedance of a capacitor is 1/(j*w*C) where j = sqrt(-1), w = 2*pi*f (f = frequency), and C is the capacitance.
To find the correct value of capacitance for a PF of 0.9 lag, you need to know the total impedance of the load which includes the value of the resistance and the configuration of the load (parallel, series, or some combination).
Adding a capacitor bank makes absolutely no difference whatsoever to the amount of energy consumed (in kilowatt hours). The capacitor bank might reduce the load current, but this does not affect the amount of energy consumed. Anyone who tries to sell you a 'capacitor bank' in order to save you energy is selling a SCAM!
Cable sizing is based on amperage of the load. The rating of the capacitor bank and the voltage at which it operated need to be stated to give an answer.
Use of rvt in capacitor bank
A: Its purpose is to correct the power factor of the line.
It depends upon at how much voltage level 400 kvar capacitor bank is used.
Adding a capacitor bank makes absolutely no difference whatsoever to the amount of energy consumed (in kilowatt hours). The capacitor bank might reduce the load current, but this does not affect the amount of energy consumed. Anyone who tries to sell you a 'capacitor bank' in order to save you energy is selling a SCAM!
Cable sizing is based on amperage of the load. The rating of the capacitor bank and the voltage at which it operated need to be stated to give an answer.
It is calculated by knowing what the reactive power is that has to be countered.See related links below.
You need to explain what you mean by '4 mb'.
Use of rvt in capacitor bank
A: Its purpose is to correct the power factor of the line.
Series reactors may be used in switching in capacitor banks. These are used to minimize the transient voltage spikes on the system resulting from switching in a capacitor bank.
The primary reason for a capacitor bank in an electrical substation is for power factor correction. There may also be some secondary purpose for the capacitor bank but the primary reason is power factor correction.
capacitor bank
It depends upon at how much voltage level 400 kvar capacitor bank is used.
It doesn't ?
The most common method of improving the power factor of a load is to connected a capacitor or capacitor bank, of appropriate reactive power (expressed in reactive volt amperes), in parallel with the load.