Are there any EMC filters for C2 category for drives supplied by 690V?

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690V supply network is not public network for residential environment. It is industrial network and typically supplied by distribution transformer which is part of installation.
So mains with 690V is typically 2nd environmnent (C3 or C4) therefore this additional EMC filter is not necessary. From this point of view we do not offer additional EMC filters for 690V drives.