Hello Gents
Redsnake, there is a three lead set for supply but one wire not used (not my design) good observation though. Edison, this particular Drive pulls paper off of a web roll so while motor is idle the brake keeps tension on paper. Bill, I have installed a lot of motors this should have...
Hello Folks
We let the smoke out of a 230V Drive cooling fan motor, one leg is neutral the other 230VAC for a Heidelberg printing press . Sent it out for rewinding and it came back looking really nice however when I energized it, no joy! It just hummed and I felt resistance while nudging it in...
Hello Jeff
But Jeff is doing this something that when the machine jams it just stops while drive remains energized casing an unsafe condition for operators?
Chuck
I agree with Panter and think the test voltage is too low, Here is a link I found with recommendations on page 6.
http://www.techni-tool.com/site/ARTICLE_LIBRARY/Megger%20-%20The%20Complete%20Guide%20to%20Electrical%20Insulation%20Testing.pdf
Chuck
My guess is you can perform that operation with a continuous rotating disc having an arm offset from center so there might not be a need to reverse motor.
Chuck
Here is a good picture of typical Mercury switch, Link I kind of miss these thermostats as compared to the programmable ones which complicate things in an office filled with woman in their forties.
Chuck
Yes yes!,I agree with that, My first thoughts were based on my experience with an identical old motor we had, the brushes appear low to me and I think with age those clock springs weaken causing bounce although the OP did say brush pressures were ok. Motor is very clean and appears to have been...
Sounds to me like you have a problem, I would second guess myself as well. I would recheck the Megger on a known good winding different motor or simply leave the leads open and check for infinity. Try a simple ohm test see if you get a reading. Still in doubt borrow a Megger from a local sparky...
Hello Gunnar
Yes a little post partum posting, after searching and reading on line I decided to pull the post. "Remain silent and be thought a fool, open your mouth and remove all doubt"
Thank you for the clarification on that.
Chuck
I have also Bill, odds are the failure would be on load side of motor and that would be felt with the wiggle meter on shaft. I found the dang magnet would float on top of rotor when free and catch at various points with each turn. I have tried to re-epoxy one once but the opposing forces were...
