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Do you have to disconnect the EMC filter on the ATV600/900 using a Ungrounded Delta system?

Issue:   
Do you have to disconnect the EMC filter on the ATV600/900 using a Ungrounded Delta system?
 
Product Line: 
ATV600 ATV900 Process drives 
 
Environment:  
Ungrounded Delta or High resistance grounded power systems.
 
Cause:  
N/A
 
Resolution:   
Yes, The older version of the installation manual did not show Ungrounded Delta as a requirement, but that has been updated..
ATV600 series Installation Manual available here:  
https://www.schneider-electric.us/en/download/document/EAV64301/
ATV900 series Installation Manual available here:  https://www.schneider-electric.us/en/download/document/NHA80932/
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