Mechanical Services
Gearboxes, Pumps, Blowers & Fans, Extruders, Grinders, Choppers, Shredders, & More
On-Site Field Services
Certified Vibration Analysis, Laser Alignment, Dynamic Balancing, PDMA, Installations & More
Follow us on Facebook for News
It’s truly important to understand the importance of shaft voltage/bearing currents before trying to implement a solution. Sometimes, the best intentions will have less than a desirable outcome.
There is evidence of fluting on inner and outer races, electrical discharge on shaft, bearing ID & OD, housing and rolling elements in the pictures.
0 CommentsComment on Facebook
Some cool pics of a motor winding job in process. Very intricate work handled beautifully by Jeff. A true work of art 🤌
4 CommentsComment on Facebook
Due to the ice storm we will be keeping the offices closed on Monday January 6th. If you have an emergency please call your contact’s cell phone or email us. We will also have the after hours answering service on if you call the main number. Stay safe out there Tri-State!!
0 CommentsComment on Facebook
Here is an interesting picture from our shop today. This motor was found to have a defect via vibration analysis. The vibration analysis indicated that there was a fault occurring from inside the machine. When disassembled one of the magnetic wedges had broken loose and was rubbing the rotor. This rewind was less than 2 years old, so what happened?
The magnetic wedge that was used was not correct for this 2300V, 400HP electric motor. The shape, length and metallurgical composition of the wedge didn’t match the factory specification. As a result, the wedges were able to vibrate in the slot allowing the wedges to deteriorate prematurely. There are other contributors as well, but ancillary contributors.
When you rewind an AC motor with form coils, a key component is making sure that the wedge shape, wedge material, wedge length and slot fill are correct for the machine for reliability purposes. Of course there are many other things to consider as well. As seen in the attached picture there are many variations of wedge shapes. We partner with our suppliers and OEMs to ensure that we are using the proper materials and/or finding ways to enhance the original design.
When you partner with EEMSCO, INC. you have a team at your disposal who can help ensure your assets have the proper materials to meet your application requirements and meet the ANSI/EASA AR100-2020 recommended practice for the repair of rotating electrical apparatus.
We’ve been around for over 100 years and look forward to serving our customers with excellence for years to come.
#reliability #ACmotors #rewind #EASA #EEMSCO #TrustedPartner #VibrationAnalysis
0 CommentsComment on Facebook
You can’t test in quality, but you can ensure quality with the proper tests. In the video below we are using Electrom Instruments Inc iTIG IV and individually surge testing each coil before connection.
These coils are submersible rated and carry the IEEE 522 3.5 p.u. rating. This 2300V motor will be ready for its challenge in harsh environments.
You can rest assured when you partner with EEMSCO, INC. that we will work together to ensure your motor is correct inside and out for the environment/application it’s in.
0 CommentsComment on Facebook
Finishing up pre-VPI testing on this 900HP, 14 pole, 2300V motor for a valued customer of EEMSCO, INC. We trust Electrom Instruments Inc 12kV iTIG IV to perform our component testing in our rewinds. We also use this tester to determine if machines have evidence of PD especially in low voltage VFD applications to find potential faults before they occur.
Great job team! Want to know more, ask below or give us a call!
#easa #eemsco #reliability #acmotor #motorrepair #TrustedPartner
0 CommentsComment on Facebook
