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Is it possible to add Line Choke & DC Choke both to Altivar 71 drive.

Published date: 13 May 2019

It is not recommended to add a Line Choke & DC Choke both because the voltage drop will be too much inside the choke.This voltage drop increases with the load of motor. The total drop voltage is too important for the product and not allows to assure the good torque to control motor. 
Moreover, Altivar 71 greater than 75 KW Drive supplied as standard with a DC choke, So, it is recommend to use internal DC choke of product or Line choke, but not both together. The harmonic distortion will be the same with internal DC choke or Line choke.

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