3-1-10 Distribution Capacitors Flashcards
The farther apart the plates of a capacitor are, the more capacitance there is.
False
The insulation used in a typical distribution capacitor is usually __?__ or polyethylene film.
oiled paper
If operating properly, the resistor in a capacitor will drain the voltage to 50 volts or less in __?__.
5 minutes
Distribution capacitors installed on a(n) __?__ can improve the power factor right back to the generator.
distribution system
Motors that cause inductive reactance in a circuit increase the overall __?__ of the circuit.
impedance
Most distribution capacitors on distribution circuits are installed to boost distribution voltage and to __?__.
reduce line loss
The 2/3-2/3 location rule for placing distribution capacitors on a distribution line means the capacitor bank is placed about 2/3 of the distance from where the voltage has dropped by 2/3.
True
The plates of a capacitor are made up of two long sheets of __?__.
aluminum
Less current is needed to supply a load if there is less impedance on the line.
True
The resistor inside a capacitor is connected between the __?__.
two terminals
Multiple rolls (plates) inside a capacitor can be interconnected in series or parallel.
True
Current flows into a capacitor only while the __?__ is rising in an AC circuit.
voltage
A distribution capacitor’s main function is to increase the change in voltage of an AC circuit.
False
In an electrical power system, most distribution capacitors are connected __?__.
in parallel
Distribution capacitors work by improving the power factor from the installation point back to the source.
True
On a radial circuit where there is severe voltage flicker, distribution capacitors would be connected __?__.
in series
This lesson points out __?__ types of controls that can be used on electrical oil switches to switch distribution capacitors on or off.
5
Distribution capacitor banks in a substation are normally surrounded by a fence with danger signs and are __?__.
set up on insulators
A 300-kVAR capacitor bank connected on a 25-kilovolt wye system will draw __?__. Round up
7 A
A 300-kVAR capacitor bank will draw __?__ if connected to a 12.5/7.2 kilovolt system.
13.8 A
If a charged capacitor is returned to service, the voltage will drop dramatically.
False
When energizing a capacitor and proper contact is not made the first time with the cutout, you should wait __?__ before trying again.
5 minutes
