Here are some before and after pictures of a 1000HP, 575V definite purpose VFD driven motor after a complete refurbishment including a rewind with magnetic wedges. Our team at EEMSCO, INC. takes pride in making the equipment look better than new when it is returned. Not only does it look better than new, it will perform as good or better than new. This particular motor is an IEC frame. The coil insulation scheme from the OEM requires that the motor be tested to higher than standard values on it’s electrical tests, due to the VFD configuration it is connected too.
All rewinds at EEMSCO are tested at values that meet or exceed the NEMA MG-1 Part 31 or IEC 60034-18-41 standards for inverter duty rated systems. The acceptance criteria has changed in 2024 and 2025. This means that our surge test and high potential test values are higher than the normal values. We conduct partial discharge testing on the windings to ensure they are PD free up to the values required by the standards. Part of meeting the IEC 60034 standard states that the motor must pass it’s high potential test completely assembled and all wires terminated on terminal blocks. These tests don’t ensure a quality rewind, they prove it. You can’t test quality into your process, but you can surely validate quality work by testing properly.
As the industry continues to advance, so do we. Just as we have over the last 100+ years.
Thank you team for your dedication to serving your internal and external customers with excellence. That is the EEMSCO “way”!
200/200HP, 4/6 pole, 2.3kV motor with 72 slots. It’s not a PAM winding and has 2 sets of leads (one for each speed). Coils only have 1 pitch and 2 coils per slot like a standard form coil would. Connection for each winding is 1Y. ... See MoreSee Less
A rush 2300V, 1179RPM, 450HP, high starting torque fan motor rewind. This sleeve bearing machine needed a rush rewind. In 3 weeks, we had it back to the customer. This could have been done a week quicker, but we require sample coils and fully fit and test them prior to a rewind.
What a great morning today EEMSCO, INC. We had a customer come in and witness test a 1968 40HP GE DC motor. The speed range on this motor is 650 to 1750. It ran like a top. Work included, new shaft, rewind armature, rewire field frame and fabricate custom bronze sleeve bearings. The application is so sensitive to vibration that standard rolling element bearings are not an option.
It’s ready for service and will be able to operate a long time!
The burnout oven is going around the clock right now at EEMSCO, INC.
We have multiple rush rewinds in the shop, along with many other standard lead time rewinds.
Here are 3, 2300V rewinds. A 350HP, which we’ll upgrade to 400HP, a 500HP and a 450HP rush rewind.
Also, a picture of a 125HP water cooled rush rewind.
All of these will be processed in our Class H epoxy resin. Our VPI and overdip processing has been curated to provide a winding that lasts in harsh environments.
A big thank you to our team for going all in to serve our customers with excellence.
A customer of EEMSCO, INC. was picking up ball spin frequency during a vibration analysis. They removed this critical 800HP, 2.3kV compressor motor before it got worse and reconditioned the motor on a rush basis. Dissecting the bearings we confirmed ball spin by looking at the rolling elements and races.
By proactively pulling this motor, they were able to save significantly on rental fees, unplanned downtime and lower repair costs as only superficial mechanical work was required to return this motor back into service, outside of our standard reconditioning.
Here are some before and after pictures of a 1000HP, 575V definite purpose VFD driven motor after a complete refurbishment including a rewind with magnetic wedges. Our team at EEMSCO, INC. takes pride in making the equipment look better than new when it is returned. Not only does it look better than new, it will perform as good or better than new. This particular motor is an IEC frame. The coil insulation scheme from the OEM requires that the motor be tested to higher than standard values on it’s electrical tests, due to the VFD configuration it is connected too.
All rewinds at EEMSCO are tested at values that meet or exceed the NEMA MG-1 Part 31 or IEC 60034-18-41 standards for inverter duty rated systems. The acceptance criteria has changed in 2024 and 2025. This means that our surge test and high potential test values are higher than the normal values. We conduct partial discharge testing on the windings to ensure they are PD free up to the values required by the standards. Part of meeting the IEC 60034 standard states that the motor must pass it’s high potential test completely assembled and all wires terminated on terminal blocks. These tests don’t ensure a quality rewind, they prove it. You can’t test quality into your process, but you can surely validate quality work by testing properly.
As the industry continues to advance, so do we. Just as we have over the last 100+ years.
Thank you team for your dedication to serving your internal and external customers with excellence. That is the EEMSCO “way”!
#EASA #ACMOTORS #REWIND #VFD #RELIABILITY ... See MoreSee Less
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Happy 4th everyone!! ... See MoreSee Less
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Here’s a fun one!
200/200HP, 4/6 pole, 2.3kV motor with 72 slots. It’s not a PAM winding and has 2 sets of leads (one for each speed). Coils only have 1 pitch and 2 coils per slot like a standard form coil would. Connection for each winding is 1Y. ... See MoreSee Less
0 CommentsComment on Facebook
A rush 2300V, 1179RPM, 450HP, high starting torque fan motor rewind. This sleeve bearing machine needed a rush rewind. In 3 weeks, we had it back to the customer. This could have been done a week quicker, but we require sample coils and fully fit and test them prior to a rewind.
Very proud of our team!
Well done everybody! ... See MoreSee Less
0 CommentsComment on Facebook
What a great morning today EEMSCO, INC. We had a customer come in and witness test a 1968 40HP GE DC motor. The speed range on this motor is 650 to 1750. It ran like a top. Work included, new shaft, rewind armature, rewire field frame and fabricate custom bronze sleeve bearings. The application is so sensitive to vibration that standard rolling element bearings are not an option.
It’s ready for service and will be able to operate a long time!
Great job team! ... See MoreSee Less
0 CommentsComment on Facebook
Check out our logo from 1935! Very cool Art Deco style. Might have to use it again??🤔🤔 ... See MoreSee Less
0 CommentsComment on Facebook
The burnout oven is going around the clock right now at EEMSCO, INC.
We have multiple rush rewinds in the shop, along with many other standard lead time rewinds.
Here are 3, 2300V rewinds. A 350HP, which we’ll upgrade to 400HP, a 500HP and a 450HP rush rewind.
Also, a picture of a 125HP water cooled rush rewind.
All of these will be processed in our Class H epoxy resin. Our VPI and overdip processing has been curated to provide a winding that lasts in harsh environments.
A big thank you to our team for going all in to serve our customers with excellence.
#REWIND #ACMOTOR #RELIABILITY #TRUSTEDPARTNER ... See MoreSee Less
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Another successful refurbishment at EEMSCO, INC.
Here’s a 2500HP, 4.16kV, 4 pole vacuum train motor.
Great job team!
#EEMSCO #TRUSTEDPARTNER #EASA #MOTORREPAIR ... See MoreSee Less
0 CommentsComment on Facebook
A customer of EEMSCO, INC. was picking up ball spin frequency during a vibration analysis. They removed this critical 800HP, 2.3kV compressor motor before it got worse and reconditioned the motor on a rush basis. Dissecting the bearings we confirmed ball spin by looking at the rolling elements and races.
By proactively pulling this motor, they were able to save significantly on rental fees, unplanned downtime and lower repair costs as only superficial mechanical work was required to return this motor back into service, outside of our standard reconditioning.
Well done everyone!
#rcfa #TrustedPartner #acmotor #motorrepair #eemsco VIBRATIONANALYSIS ... See MoreSee Less
0 CommentsComment on Facebook