Laser Cutting

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UPS for 120W CO2 laser engraver (lemm.ee)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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I've been trying to figure out the peak power demands and an uninterruptible power supply that can handle it. There doesn’t seem to be any documentation for this. It just needs to run long enough to power off safely. It's a Trotec speedy 360. Any help would be greatly appreciated!

Edit 360 not 400 and it's an 80W laser

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[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

More directly answered, most CO2 lasers are rated in optical output power. There are a lot of inefficiencies before that, so e.g. the 85% efficient power supply, the (wild-ass-guess) 40% efficient laser, then you have other electrical loads like probably at least a dozen watts of fans, substantial power for motors, lights, controllers, air pumps if you have one...

I would expect a "120w" CO2 laser to have peak power consumption of at least 500w. You can use a kill-a-watt to check out the actual consumption while cutting, frankly I'd probably go with a 750-1200 kVA ups just for substantial fudge-factor.

Curious if you've already bought the UPS and if so how it's gone?