Description

• This is a device that creates a low-resistance path for electric current, to allow it to pass around another point in the circuit.
• These Capacitor shave several uses in the electric power systems.
• They are utilized as sources of reactive power by connecting them in line-to-neutral.
• Electric utilities have also connected capacitors in series with long lines in order to reduce its impedance.
• This is particularly common in the transmission level, where the lines have length in several hundreds of kilometer.
• Shunt capacitors are usually called power factor correction capacitors, although they also serve other functions and provide multiple benefits, which will be discussed in the succeeding paragraphs.
• Also, they are used at all voltage levels from end-user utilization to extra high voltages.
• A shunt capacitor at the end of a feeder results in a gradual change in voltage along the feeder.
• Ideally, the percent voltage rise at the capacitor would be zero at no load and rise to maximum at full load.
• However, with shunt capacitors, percent voltage rise is essentially independent of load.
• Thus, automatic switching is often employed in order to deliver the desired regulation at high loads, but prevent excessive voltage at low loads.
• Moreover, capacitor switching may result in transient over-voltages inside customer facilities.
• See the dimension/size in data sheet given.