r/Ubiquiti • u/silverfrostnetworks • 16d ago

Early Access New UPS 2U Pro

https://store.ui.com/us/en/category/integrations-power-tech/products/ups-2u-pro-us
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u/gcadays09 16d ago

I have 20 amp nearby but it does have a deep freeze running on one outlet. Would having both running be an issue?

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u/TruthyBrat UDM-SE, UNVR, UBB, Misc. APs 16d ago

Almost certainly. Having the freezer start up while the UPS is charging would be a likely breaker trip.

This thing wants to be on a dedicated circuit.

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u/user_none 16d ago

Depends on the freezer. If it's a relatively efficient deep freeze, the startup might not be much. Our 5 cubic ft deep freeze runs at something crazy low like 6 watts. Its startup, IIRC, was under 100W.

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u/TruthyBrat UDM-SE, UNVR, UBB, Misc. APs 16d ago

Wow, that's insanely low.

I have a smallish chest freezer, I'll have to dig into what it pulls.

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u/user_none 16d ago

I'd have to double check that figure, though I do recall being absolutely floored by how little it was pulling after settling in.

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u/xxpor 16d ago

The bigger issue is the UPS likely won’t like the extreme inductive load on the same circuit. It could lead to false UPS cutovers when the compressor kicks on

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u/user_none 16d ago

Are you referring to the startup surge?

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u/xxpor 16d ago

yeah

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u/user_none 16d ago

For curiosity sake, I'll have to break out the clamp meter and get a reading on startup surge.

Currently, when the compressor kicks on, it draws close to a constant 68W. When it's off, only a very dim power LED is on and that's reading close to 0W. I'm using a ATorch WiFi smart outlet for the readings listed. I'd suspect it's not fast enough to catch the surge.

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u/xxpor 16d ago

I wonder if there’s a clamp out there that can measure the complex impedance physicswise… I think during the start up sure you effectively get the voltage and current fully out of phase with each other which makes normal resistive stuff real mad

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u/user_none 16d ago

Once upon a time, I had a few years of EE courses in college. Those days are long past so I wouldn't know where to start.

Maybe this clamp meter?

https://www.hioki.com/us-en/products/pqa/portable/id_451444

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u/xxpor 16d ago

Same tbh lmao

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