Dingfeng Capacitor---Capacitor Bank In Power System

Nov 27,2017
Dingfeng Capacitor---Capacitor Bank In Power System

three phase power capacitor bankpower capacitor

Discharge Device

Each capacitor unit or bank shall be provided with a directly connected discharge device. The discharge device shall reduce the residual voltage from the crest value of the rated value UN to 50 V or less within 1 min, after the capacitor is disconnected from the source of supply. There must be no switch, fuse or any other isolating device between the capacitor unit and the discharge device.

A discharge device is not a substitute for short-circuiting the capacitor terminals together and to earth before handling.

power capacitor


t = time for discharge from UN Jr to UR(s),
R = equals discharge resistance
C = rated capacitance (pF) per phase,
UN = rated voltage of unit (V),
UR = permissible residual voltage
k = coefficient depending on both resistance and capacitor unit connections, Value of k to be taken as per IS13340

Configuration of Capacitor bank

A delta-connected bank of capacitors is usually applied to voltage classes of 2400 volts or less.

In a three-phase system, to supply the same reactive power, the star connection requires a capacitor with a capacitance three times higher than the delta connected capacitor. In addition, the capacitor with the star connection results to be subjected to a voltage √3 lower and flows through by a current √3 higher than a capacitor inserted and delta connected.

As the top three capacitor manufacturers in Wengling, we have engaged in producing capacitor for over 28 years and we are trying to be better.We believe one day Dingfeng Capacitor will exist in every corner of the world by means of its reliable quality and good reputation. By the way, Dingfeng sincerely welcome all the friend to visit our company and hopes to have a good communication and double-win partnership with all of you cause Dingfeng capacitor is always on the way to be better! Your views are the driving forces of Dingfeng! I hereby on behalf of all the members of Dingfeng, thank all of you for the long-term supporting and concerning of our growth.

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