Does the SURT line need derating if operated continuously from battery?

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I know the SURT line (specifically the SURT6000XLIX547 is what I am deploying) has double conversion, so whether running on AC input or bat...

My application is to use the SURT for extended periods from a large battery bank (not the built-in 5Ah 192V modules) so I am wondering if any de-rating is needed for the SURT when running continuously from battery input. My guess is that the heat production is not much different than normal double-conversion operation, but I may be overlooking something.

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