Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
General Engineering
Mechanical Engineering
Electrical Engineering
Aerospace Engineering
Nuclear Engineering
Materials Engineering
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
General Engineering
Mechanical Engineering
Electrical Engineering
Aerospace Engineering
Nuclear Engineering
Materials Engineering
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Engineering
Mechanical Engineering
How to Determine Over-Amperage on Pulley Size Change?
Reply to thread
Message
[QUOTE="erobz, post: 6821356, member: 700856"] One of my projects 54" Diameter FRP Fan, mounted on a 100+ year old roof with a 5000 lbf concrete inertia base for a HCL scrubber system that was significantly underperforming at the time ( nonone likes breathing HCL fumes) . The fan I specked had a 200 Hp motor, everyone thought I was a fool ( a.k.a. young engineer) which was completely justified. I did take some licks on that one ( kind of ). The electrical engineers specified the starter, it was a 16 hr day on install day. Everything finally got hooked up around 10 pm. Everyone held their breath and somewhat timidly flipped the switch ( it was the largest motor in the mill ). Seemed to start fine, relief!... then the breaker kicked...and again...ok let's change the wiring on the motor one of the electricians devised. And ...the breaker still popped. That was a depressing moment...I thought, welp... I'm getting the axe ( everyone else joked - but I could see by the color of their face that it was a real possibility). Luckily I had finished early in shutdown week. The next day we determined it was a significantly undersized started. We needed one rated for high inertia loads. That solved the problem. [/QUOTE]
Insert quotes…
Post reply
Forums
Engineering
Mechanical Engineering
How to Determine Over-Amperage on Pulley Size Change?
Back
Top