However, the output frequency range of Altivar Variable Speed Drive varies from 0 Hz to 400 Hz. So when the TeSys T is placed in the downstream of the Variable Speed Drive, the CTs of TeSys T will not be able to sense the current values correctly, as the frequency of the current is not as per design specifications.

This will affect the TeSys T working and the outcome will not be the actual.  So, it is not recommended to use the TeSys T in downstream of the Altivar Range Variable Speed Drives.