Is this really an online double converter (protection class 9)? From the information I could find in the internet, it looks like it's not. Why also the other models from Powerwalker AVR Xxx / SIV series are not classified as such?

I hoped that I could use this for sensitive audio equipment to reduce issues with the ground loop, but it seems to be not the case.

Question

Is this really an online double converter (protection class 9)? From the information I could find in the internet, it looks like it's not. Why also the other models from Powerwalker AVR Xxx / SIV series are not classified as such?

I hoped that I could use this for sensitive audio equipment to reduce issues with the ground loop, but it seems to be not the case.

Accepted Answer

not usable for your application i guess, in and output are NOT galvanically isolated. (i measured/tested)
its just a transformer with 5 taps that switches automatically to keep the output voltage between 180 and 245V for input voltages between 120 (NOT 110) and 250V input
standby use 15-30W (dependent on V-in), probably an auto-transformer, N-in is directly connected to N-out.

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