This application is your tool to estimate the total harmonic current in your electrical system and to calculate your need for active harmonic filtering to reach the desired compensation level. The application prints the summary of the results on the web page and sends a more specific report to your e-mail.

Harmonic Calculator

Please refer to Harmonic Calculator User Guide for help with Harmonic Calculator

Personal information

Please provide your name, company and a valid e-mail address to deliver the report to.

System and supplying transformer information

Please provide basic information of the electrical system and the supplying transformer. Please do not use thousand separators.

Please contact for solutions at higher voltage levels.

4W or 3W connection:

Systems where neutral wire exists can be selected as 4W. 4W connection is needed only when neutral wire currents (harmonics 3rd, 9th, 15th …) need to be compensated (3W by default).

Capacitor bank:


If the installation site is at an altitude higher than 1000 m above sea level, please choose the the elevation from the drop-down list. If the elevation is above 3000 m, please make an inquiry to our sales directly.


Please select the desired compensation level:


Do you want to compensate reactive power with active filters?

Do you have power quality measurements?

Enter the amount of loads:

Do you want to calculate required compensation automatically or select active harmonic filters manually