Capacitor Banks Variation With Voltage and Frecuency

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SUMMARY

The discussion centers on the adjustment of a 480 V, 200 kVAr capacitor bank originally designed for 60 Hz operation when relocated to a 390 V, 50 Hz environment. The capacitive reactance at 60 Hz is calculated using the formula X_{60} = P/V^2. To find the reactance at 50 Hz, the ratio of frequencies is applied: X_{50}/X_{60} = 60/50. This method allows for the determination of the new power rating of the capacitor bank at the altered voltage and frequency.

PREREQUISITES
  • Understanding of capacitive reactance calculations
  • Familiarity with electrical power formulas
  • Knowledge of frequency and voltage relationships in capacitor banks
  • Basic electrical engineering principles
NEXT STEPS
  • Research how to calculate capacitive reactance for different frequencies
  • Learn about the impact of voltage variations on capacitor bank performance
  • Explore the design considerations for capacitor banks in varying operational conditions
  • Study the effects of frequency changes on reactive power in electrical systems
USEFUL FOR

Electrical engineers, power system designers, and technicians involved in the installation and maintenance of capacitor banks will benefit from this discussion.

biguelo
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Hi,

I have a 480 V, 200 kVAr and 60 Hz capacitor bank. I need to move this bank to a location with 390 V and 50 Hz, I wonder what would be the resulting power of the bank.

Regards.
 
Engineering news on Phys.org
Find value of capacitive reactance at 60 Hz
X_{60}=\frac{P}{V^2}. Now its value at 50 Hz is found from
\frac{X_{50}}{X_{60}}=\frac{60}{50}.
From the value of X_{50} and using new voltage 390 V you can find resulting power rating of your capacitor bank.
 
Thanks for the reply.
 

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