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Tripp Lite

RetiredArmy

Gold $$ Contributor
2 weeks ago I decided to order Adams auto throw set up with Fx120i scale. Can anyone tell me if this Tripp lite will be big enough to power it smoothly or will I need something bigger? The only thing that will be plugged into it is the auto system.
Thanks Bill
 

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That is the exact one I have and it works perfectly. Never though about it before but I have actually caught it in action a few times. I have noticed the "Trim" light on several times meaning there is an overcurrent situation. and once even seen the "boost" light on meaning power is low.
HINT,. Dont plug anything else into it but the scale.
 
The problem will be running the stepper motors on the powder measure and trickler - they pull large current spikes when they step. I have no knowledge of what precautions may have been taken in the design of the Autotrickler electronics; common approaches would be the use of zener diodes and/or capacitors to limit the current, and in more sophisticated designs the voltage is ramped rather than abruptly switched. The upshot is that extra capacity is good, especially because UPS ratings are to be taken with a few grains of salt as marketers do strange things with the numbers.
 
As I previosly mentioned (battery), use a 12v motorcycle battery and regulate it down to scale voltage. If the steppers and auto trickler run on the same voltage as the scale but cause voltage spikes I'd create a separate branch to isolate the scale voltage from the AT and steppers.
 
A 3/4 horsepower motor will pull that power when running (depends on load), but the surge current at start is easily 50-100 amps. Using a variable frequency drive to "soft start" brings it way down, usually little more than the run current.
 
This one works good for me.
Amazon.
My setup includes an anti-static mat, with a wrist strap, all sitting on a 1" granite slab.
 

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A 3/4 horsepower motor will pull that power when running (depends on load), but the surge current at start is easily 50-100 amps. Using a variable frequency drive to "soft start" brings it way down, usually little more than the run current.
So, what circuit breaker do you suggest on a 3/4 HP 120 volt motor?
 
Using a conventional thermal circuit breaker, 10 A would be about right if it isn't heavily loaded (it has a delay before it trips); a magnetic breaker would have to be much bigger because it trips almost instantly.
 

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