quattroworld.com Forums: they tell you that because the UPS needs to be rated for a bit more than the max draw on the laser

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they tell you that because the UPS needs to be rated for a bit more than the max draw on the laser
Posted by: manualAvant (497) on 2014-02-24 12:30:52 In Reply to: I'm not trying to limit the dimming with the surge protected receptacle. posted by 808MGuy on 2014-02-21 20:36:24	Share \| Report

and nobody provisions their UPS like that, cause they plug other stuff into it.

The surge protector only protects against incoming surges and does not help anything else on the line if it demands power (within ratings) suddenly. Surge protecting everything affected by the laser voltage sag won't do anything, but a UPS would, although it seems kind of silly to put lights on a UPS. You'd also need one that reacted instantly. I suggested a double conversion UPS on the laser because the UPS might be able to compensate and not sag the line.

You didn't specify which Brother, and there is no printer that starts with MFP, so I looked up the MFC-9xxx series, which the *peak* draw is 1188 W, or 9.9 A, so you could protect that with a 2000 VA double conversion UPS which is only like a couple thousand dollars..

This one even says "go ahead, plug a laser into it"

http://www.grainger.com/product/GENERAL-ELECTRIC-UPS-System-12P697

Anyway, the spec sheet listing it at 10A peak should explain your problem and the dedicated line will probably solve it as well.

Brother specs

Thread:

Brother printers - large current draw? - 808MGuy 2014-02-20 18:07:13 (237 views)
- Same. Trips my battery backup as well. - rattyfox 2014-03-02 22:33:07 (168 views)
- 7A is almost 50% of a 15A circuit. Seems legit. - manualAvant 2014-02-21 11:00:38 (175 views)
  - Shouldn't be getting enough voltage dip on a circuit at only 50% load to dim the lights. - 808MGuy 2014-02-21 17:24:51 (182 views)
    - you're talking like a 4A extra increase in power will cause a dip when sudden 7A will not - manualAvant 2014-02-21 18:00:57 (182 views)
      - I'm not trying to limit the dimming with the surge protected receptacle.  -  808MGuy  2014-02-21 20:36:24 (195 views)
        
        they tell you that because the UPS needs to be rated for a bit more than the max draw on the laser   -  manualAvant  2014-02-24 12:30:52 (186 views)
        
        Dedicated 20a circuit is installed. Problem solved but...  -  808MGuy  2014-02-24 18:47:48 (176 views)
- I've noticed that too - Pelican Pete 2014-02-21 08:13:30 (194 views)
  - The printer circuit wasn't the main reason we had them come out - 808MGuy 2014-02-21 10:40:10 (198 views)
- The old HP 4L did the same...weird. - Wowdi 2014-02-20 20:00:40 (173 views)
- Mine does that too. - Brdman* 2014-02-20 18:56:07 (180 views)

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