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Line Reactor Sizing

Include Line reactor diagram

Benefits of a Line Reactor

1. Minimizing Nuisance Overvoltage Trips Due To Line Transients
2. Reducing Input Line Current Harmonics from VFDs
3. Improving VFD Power Factor and Reducing Line Losses with Reactors
4. Minimizing Line-Side Fuse Operation During Unsymmetrical Voltage Sags

http://www.schaffner.com/mediapool/files/mediaPool46.pdf

Selecting impedance for the line reactor

Line reactor applications generally require an impedance of 3% or 5%. However, some of the high power applications use an impedance of 4% or 5% to increase the line current quality and reduce the attenuation.

1. Determine the HP (horse power) rating or the Current rating of the drive or motor.
2. Select the supply voltage (208, 240 , 480, or 600 volts).
3. Determine the percent impedance required for the application.
4. From the table below, select the Catalogue No. of the reactor corresponding to the current /HP, voltage, and the percent impedance.
5. For each Catalogue No. selected, the inductance, dimensions, and the weight are given in the following two pages.

http://www.pioneerelectric.ca/Products/LineReactors.pdf