Power Factor Correction Application Guide | Improving Power Factor
Phone  :  586.979.9955
Fax  :  586.979.9484

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Application Guide for Power Factor Correction


Power factor can be increased (improved) by adding power factor correction capacitors to the plant power distribution system.  This reduces the amount of reactive power, and thus the total power generated by the utility.  Consider the case shown in Figure 2.

In this case the utility provider applied a penalty formula when the power factor fell below 85% resulting in a monthly penalty of $650.00.  Also, to provide 812 kW active power to the 1500 kVA transformer is loaded to approximately 78% capacity (1160/1500 = 77.3%).

To improve the power factor to a value greater than 85%, a PFCC with a capacitance of 410 kVAr is added to the system.  This improves the power factor to 89%, and reduces the required total power to 913 kVA as shown in Figure 3.

The user, operating with the same active power, but now with capacitors installed, has eliminated the $650.00 monthly penalty.  Estimating labor and material at $7,400.00 results in an ROI of less than 12 months.

Total power is reduced by 247 kVA (1160 - 913 = 247).  This reduces the load on the 1500 kVA transformer from 78% to 60%, freeing up more capacity for the addition of future loads.

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MYRON ZUCKER INC. products are designed to:

  • Improve power factor
  • Eliminate utility penalties or surcharges
  • Increase available distribution capacity
  • Mitigate harmonic distortion
  • Protect sensitive equipment
  • Decrease downtime
  • Reduce line losses and associated cost
  • Comply with industry standards


Myron Zucker, Inc.
36825 Metro Court
Sterling Heights, MI 48312
Phone: 586.979.9955
Fax: 586.979.9484
Email: [email protected]