I have 2 Apex 300s and the Hub A1.
When I connect either Apex300 directly to my transfer switch, the results are as expected - 120v and 59.9 Hz consistently (per Kill A Watt tool).
However when I connect either Apex 300, or both, through the Hub A1, the resulting power does not have a consistent frequency - it moves from around 58.5 Hz to 60.5 Hz, cycling every three seconds.
Further, this is observable in powered devices - fridge and microwave - have an audible surge sound matching the three second cycle shown via the meter.
I’m no expert, but this doesn’t seem right, and is concerning that it could damage powered devices over time.
Has anyone else experienced this with their Hub A1 or are folks getting the expected results of consistent frequency output?
Any recommendations on how to address this?
Thanks!
Hello,
Could you please provide the DSP version and SN? Additionally, could you check the frequency displayed next to the AC output icon in the app? We would like to compare it with the data measured by your electricity meter.
Thank you for your cooperation! If you have any other questions, please feel free to let us know.
Hello, Certainly.
DSP version: v2174.09
SN: HA12524000105682
Although I don’t see the frequency in the app next to the AC output icon, when I drill down into the AC output, I see it there. Watching the display for a couple minutes, the frequency fluctuated between 59.9 and 60.8 Hz (screen shots attached).
Thank you!
To update this for anyone seeing it in the future, after some questions and answers from technical support, my HubA1 was authorized for return and replacement.
Latest update - I received a replacement HubA1 unit, but unfortunately the system exhibits the same problem as documented before.
I’ve contacted customer service again and will see where that goes.
Technical support provided firmware updates but that did not improve the behavior. They are looking into it further.
So at this point, I observe the fluctuating frequency now with multiple different HubA1s, different AP300s, different cables, with and without expansion batteries.
I have to ask others out there - does anyone have the HA1 setup and get a constant frequency from their system? (Constant like I get from utility power OR from a single AP300 when not connected to HA1…)
As a reminder, I initially noticed the fluctuation audibly when fridge and microwave motors would surge and change sound. This was confirmed via Kill-a-Watt tool Hz feature.
Thanks for any feedback!
Interesting - I don’t see load frequency displayed on the iOS version of the app; just power. But frequency is visible on Android. I have three AP300 connected to a Hub A1 and will keep an eye on it. I haven’t paid much attention to it before, but I don’t recall ever hearing the appliances surging or changing sound. Have you selectively disconnected your loads to see if maybe one of them is the culprit?
Thanks for your input!
I noticed that as well - frequency was formerly in the iOS app, but vanished with recent / latest version.
Yes I have removed loads and still see the fluctuation with none on the system. (Seen in the app, before, and now via kill-a-watt tool.) Good idea!
Update from BLUETTI Customer Service for anyone interested:
This is a known issue that has been escalated to our product team for in-depth analysis and research. While we do not have an immediate solution or a specific timeline for a fix at this moment, please be assured that we are actively monitoring the situation.
We sincerely apologize that the issue you reported remains unresolved. We fully understand your frustration and truly appreciate your continued patience.
Thank you for your understanding and for giving us the opportunity to improve.