DC machine

Overspeed on a series wound DC machine, a lesson learnt

Well, it seems I’ve generated a great deal of interest with my post regarding an accidental over speed of a DC motor we had repaired. Just last week, I posted a photo of a DC motor armature after it had been accidentally overspend, after we had rewound it. Here’s the original post A great learning experience I posted it to …

rewinders repair workshop

Everyone knows the importance of core loss testing, but why do so many rewinders dismiss it?

“One of the most important quality assurance tools in the motor rewinding trade is the core loss tester Websites and promotional material from electric motor rewind companies from around the world tend to push one message “Quality Electric Motor Rewinds”, after all, nobody is going to admit to being sub-standard in a competitive industry. But what amazes me, is how …

Motor Rewinding - Man or Machine?

Motor Rewinding – Man or Machine?

It seems on a few of my earlier posts that I’ve inadvertently added to the repair v replace argument for electric motors. On this post I just want to show my respect for the skilled craftsmen who, day-in day-out, rewind motors. Now just to show and I guess a few of you cannot un-see the motor winding picture above, what …

Comparing a repair versus new for an electric motor. Which is better?

Comparing a Repair Versus New for an Electric Motor. Which is Better?

The picture at the top of this post is a repaired ABB electric motor just about to leave our UK workshop. It’s not a big motor and there’ll be many people saying things like ‘it’s not worth repairing’,  ‘you’ll be better off buying new’, ‘A repair isn’t as good as a new motor’ and “you’ll lose efficiency if you repair it’. Well …