Energy consumption around the workshop

[esantoro]

About a year ago I was curious to know how much energy these 441 clones consume.

Today, I received a P3 International kilowatt measuring device and have been going around the workshop measuring kwh usage.

Please correct me if my usage of kwh is not correct.

1. 75 watt incandescent lamps consume .00133 kwh per minute.

2. 441 with servo motor consumes .0005 kwh per minute. To get this result, I ran the machine with a #25 needle but no thread for 18 minutes straight. Consumption during that time was .01 kwh.

Notes: slow, controlled stitching on one or two layers of 5/6 oz chrome tanned pulled 45 watts/1.45 amps. Four layers of the same pulled 48 watts/1.66 amps.

Moderately fast stitching of one or two layers of 5/6 oz chrome tanned pulled 72 watts/1.58 amps.

Sitting idle the machine draws 3 watts/.03 amps

As we get older, the toys only become more practical.

Ed

[TwinOaks]

you did adjust your calculations to allow to direction of rotation didn't you?

[Luke Hatley]

Ed........make some more Bags .........you have entirley too much

time on yours hands............

[tonyc1]

About a year ago I was curious to know how much energy these 441 clones consume.

Today, I received a P3 International kilowatt measuring device and have been going around the workshop measuring kwh usage.

Please correct me if my usage of kwh is not correct.

1. 75 watt incandescent lamps consume .00133 kwh per minute.

2. 441 with servo motor consumes .0005 kwh per minute. To get this result, I ran the machine with a #25 needle but no thread for 18 minutes straight. Consumption during that time was .01 kwh.

Notes: slow, controlled stitching on one or two layers of 5/6 oz chrome tanned pulled 45 watts/1.45 amps. Four layers of the same pulled 48 watts/1.66 amps.

Moderately fast stitching of one or two layers of 5/6 oz chrome tanned pulled 72 watts/1.58 amps.

Sitting idle the machine draws 3 watts/.03 amps

As we get older, the toys only become more practical.

Ed

Ed, do you mean the servo motor uses power when it is not in use? I have no idea what amount of power is used in my workshop but the house and workshop usually runs 750 - 800 dollars a quarter.

Tony.

[UKRay]

I agree with Luke, Ed. Get back to work and stop playing with those toys!

Ray

[esantoro]

Now I can say that Walden Bags is a green company.

I'm working on the real stuff:

http://www.etsy.com/view_listing.php?listi...r=&includes[]=tags&includes[]=title

And I have a couple of black bags I'm finishing up.

Does this mean no one wants to hear about my new infrared thermometer pistol and the temperature of the neighbor's cat?

ed

"It is in procrastination that we work through the complexities of other areas of life. Or it just makes us so behind that we are forced to stay up till 4 am to get the real work done. But the sleep that comes later is bliss."

---Confucious Ed

[tonyc1]

Now I can say that Walden Bags is a green company.

I'm working on the real stuff:

http://www.etsy.com/view_listing.php?listi...r=&includes[]=tags&includes[]=title

And I have a couple of black bags I'm finishing up.

Does this mean no one wants to hear about my new infrared thermometer pistol and the temperature of the neighbor's cat?

ed

"It is in procrastination that we work through the complexities of other areas of life. Or it just makes us so behind that we are forced to stay up till 4 am to get the real work done. But the sleep that comes later is bliss."

---Confucious Ed

Ed, you didn't answer my question re. the servo motor!

Tony.

[esantoro]

If the red power light is on, but the stitcher is not actually in use, power is still being consumed. I'm not sure how much energy is consumed by a constant 3 watt/.03 amps. I'll leave the power on overnight with the meter attached and report back.

I have also heard that leaving the power on when the machine is not in actual use is not good for the motor and will shorten its lifespan.

I know that energy rates varyby geography, but what do some of you pay per kilowatt hour?

ed

Ed, do you mean the servo motor uses power when it is not in use? I have no idea what amount of power is used in my workshop but the house and workshop usually runs 750 - 800 dollars a quarter.

Tony.

[UKRay]

Does this mean no one wants to hear about my new infrared thermometer pistol and the temperature of the neighbor's cat?

Okay, I'll buy it. What part of the neighbor's cat have you been sticking your thermometer pistol in then, Ed?

[Vikti]

The deal is with motors is that it takes more power to get the thing started than it does to keep it running, so running it for 18 minutes isn't showing you the true power usage because when you sew your constantly starting, stopping, speeding up and slowing down the machine. Those power meters are really for something like refrigerators and computers as well as other stuff that you turn on and leave on for hours on end.

Damon the mad electrician

(who happens to be studying motors in school at this time)