It depends what it's for. If it's for power-factor improvement, then it is normally connected in parallel with the load.
Use of rvt in capacitor bank
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!
It depends upon at how much voltage level 400 kvar capacitor bank is used.
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.
Capacitor banks can improve the power factor if the load is leading, which is unusual. Typically in substations capacitor banks are employed to reduce over voltage.
Use of rvt in capacitor bank
The size of the breaker needed for a capacitor bank typically depends on the total capacitance and the system voltage. As a general rule, the breaker should be rated to handle the inrush current during capacitor energization, which can be significantly higher than the steady-state current. It's advisable to consult the manufacturer's specifications for the capacitor bank and adhere to local electrical codes, ensuring that the breaker is also rated for the specific application and environment. A common practice is to select a breaker rated at 125% of the maximum continuous current expected from the bank.
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.
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.
FOR A 24VDC it is best to install a 50v breakdown capacitor to ensure reliability
It doesn't ?
To repair a 680 microfarad capacitor, buy a new one and install it in place of the old one. It is unrealistic to attempt repair of a capacitor.
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).
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.