Other EcoFlow models also has ~30ms interruption in UPS mode (withing from mains power to inverter). It is mentioned in EcoFlow video EcoFlow Lab: Unveil R600 Smart Inverter [time stamp 06:36]
It is disingenuous to characterize Ecoflow's 30ms switchover time between AC pass through mode and running off battery power as "a hiccup in AC power."
They are hardly unique in this - give me a list of other manufacturer's units that do this faster.
And you can avoid the switchover issue entirely, by powering the DP from DC power.
The dual direction inverter - charging board is what made Ecoflow the state of the art in So Gens all the other have been chasing.
That made an hour to 80% possible, previous legacy companies like Goal Zero and Jackery took 10 hours or more to recharge their So Gens.
That reversal and the relay switching takes time - but nevertheless
My Haier quad and my tenant's fridge certainly have never suddenly jumped into a "violent compressor restart" during the 30 ms switch over.
Even running off of Ecoflow's modest 600W output River Max unit, let alone an 1800W output Delta.
Really EEVblog's complaint - and configuration of 3 fridges is fairly unique, what kind are they exactly? Are they industrial/commercial units?
We can look at the specs.