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Isolated DC-DC in series and Buck-Boost Settings

Hello,


After reading all the documentation and contacting various distributors I have conflicting data regarding two Victron products.


Question 1 regarding the Buck-Boost DC-DC Converter 25A / 50A / 100A:

Can you change the output voltage (via USB) while the converter is delivering power or will the output shortly disconnect to apply the settings?


Use case: I need to change the voltage +/- 2/3v while the connected equipment is running.

Got different answers - if maybe someone has it on the table a quick test would provide the definitive answer. The output should be under load.


Question 2 regarding the Orion-Tr DC-DC Converters Isolated:

Some of the equipment is running on 36v. Because there is no step up converter with an output between 30 and 40v one option is to use three isolated DC-DC converters IN SERIES to provide the needed 36. In theory, being isolated, it should work.


Has anyone used a similar setup or has more information if it's the right thing to do?

There is no other option (from what I have found) to have a 36v output.


Appreciate the time, willing to help research anything if it solves the problems.


Adrian

dc systemdesign
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Vance Mitchell avatar image
Vance Mitchell answered ·

Has anyone got a definitive answer on this?

From reading other similar questions it seems unsure as some people are reporting isolation on 48/12 units and others are saying they have no isolation in 12/12 units. (units mentioned were reported to be isolated units ORI481210110 and ORI121210110).

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