This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
The Current Transformers (CTs) of TeSys T are deigned to work under the frequency range between 47 to 63 Hz only.
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.
Released for: Schneider Electric Egypt and North East Africa
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