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First of all, 60 Kvar, 460 Volts, Automatic power factor Capacitor. Capacitors for capacitor bank. (Power factor corrections). In addition to this, This is a star -delta for 3 phase motor called (locally in Iraq as Dalender connection) which it used to increase the high starter current. it's capacitor to avoid dropping the signal power of input source when the input gets turbulent suddenly. Finally, In short, it is storage of electrical energy e. I. Voltage to maintain the required voltage needed in that power supply cabinet.