In the power system, reactors and capacitors banks are used for VAR support (basically to push up or pull down the system voltage).
In circuits, capacitors and reactors are used for isolation, filtering, coupling, biasing, oscillating, and the list goes on and on.
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
improvement of power factor
P=ie
You can not by-pass the capacitor in an electric motor. Most are capacitor-start motors which require the capacitor to be operational in order to start. If the capacitor is not working then it will need to be replaced.
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.
Reduce the harmonic current in the electrical supply system.
Use of rvt in capacitor bank
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.
You need to explain what you mean by '4 mb'.
They can physically be located almost anywhere. Capacitor banks are typically attached to the bus in substations. Reactors are often tapped off lines.
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!
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 ?
If you are talking about a capacitor bank used for power-factor improvement, then it is rated in reactive volt amperes (var). Otherwise, it is rated in farads (F).