The insulation system on certain motor components can be complex. The service center needs to understand what materials are best when. Especially, if we are working with customers to make something better or solve a problem. Here’s a picture of a 700HP DC motor’s interpoles that we reinsulated and processed in house. Insulating materials were carefully picked to ensure proper dielectric strength and heat transfer. To remove any potential air voids which can trap heat, the interpoles were VPI’ed in our epoxy resin from STAR Technology, Inc. and potted with a potting compound which has better heat transfer properties than normal. The end result: They look great, have minimal leakage current, have the ability to transfer heat away from the coil and have a protective coating that will allow them to be in service for many years in harsh environments. Well done team! ... See MoreSee Less
In the electromechanical repair service industry there are several key pieces of equipment that are needed to ensure a electric machine is restored to “as new” conditions. “As new” doesn’t just mean new windings and a new paint job. As an EASA accredited service center we have many QA checkpoints throughout the refurbishment process. One such area is having a burn out oven that has temperature control, chart recording and a few other key attributes to protect the equipment being burned out and employees.
The integrity of the core laminations must not have more than a 20% change in Watts/lb losses pre and post burn to maintain efficiency. If core laminations are burned at too high of a temperature damage can occur to the coating on the lamination steel amongst other things which negatively effect the cores integrity and overall machine efficiency. Maintaining proper core temperature during the burn out process can help achieve that goal.
We partnered with ECO Burn-Off Ovens for this critical step in the refurbishment process. Why? Maintaining part temperature, safety and proper after burner control is crucial for our employees, customers and the environment. They check every box for this. More to come on what this process looks like.
At EEMSCO, INC. we believe that electrical testing is at the core of reliability and data driven decision making. It also validates that our work was done correctly. While it’s true that you can’t test in quality, you can’t ensure quality without proper testing. As a service center it is our responsibility to know which tests need to be performed when, what test values are to be used and what is the acceptance criteria. There isn’t a one size fits all for electrical testing of rotating equipment.
National Electrical Manufacturers Association (NEMA), IEC (International Electrotechnical Commission), IEEE and EASA to name a few set guidelines for the tests that need to be performed and when. It’s up to the service center to understand these tests and apply them correctly throughout the repair/rewind process. It’s so much more than random wound, inverter duty, form coil, medium voltage, high voltage and DC. All of this information has the possibility of creating human error traps.
We partnered with Electrom Instruments, Inc. to find a way to eliminate the possibility of these error traps. In partnership we were able to develop test configurations that give test values and acceptance criteria for each step of the repair/rewind process for every winding type we encounter with the use of our iTIG IV+. These configurations give us the ability to provide a clear and concise tasks for the employees. It eliminates confusion, frustration and anxiety for the employee. It provides data and confidence to our customers that their asset was properly tested in EVERY step of the process as required.
Each motor has a unique electrical signature. We gather that unique signature throughout the repair process and again after the motor has been assembled and store it. If needed we can take our iTIG IV+ on site to perform tests to compare as left to as installed signatures for troubleshooting purposes or documentation purposes. ... See MoreSee Less
It’s not often that you see a DC armature with 5 commutator bars per slot. This 5 HP DC motor, may not be big, but it’s mighty. It can produce over 400% of its rated torque.
This motor will get double processed in our epoxy VPI resin for the harsh environment it’s in. At EEMSCO, INC. we’re ready for projects big or small! ... See MoreSee Less
EEMSCO offices will be closed on Thursday November 27th and Friday the 28th for the Thanksgiving holiday. We hope you all enjoy your time with loved ones! ... See MoreSee Less
Any time you walk through a service center it’s very easy to find works of art.
At EEMSCO, INC. we’ve been curating our insulation system for years. We follow a UL listed system, but we do a few things ourselves to improve upon it. Our biggest improvements are how we process the windings, how stable we keep our resin and when/how we test windings during the refurbishment process.
We do this by sending in resin samples very regularly and making curated and frequent additions to our resin tank to ensure critical attributes of the resin stay consistent and within a very tight tolerance. Our coil partner Precision Coil & Rotorand resin OEM Star Technology Casey Zimmerman are critical to our success. This gives us a very consistent product everytime.
Here’s a result of all that extra time and effort on a 2.3kV motor. This winding truly is a piece of art, however it’s ready to be placed into service where it’ll be put to the test. This motor will just perform day in and day out. Our measure for success - when we refurbish a motor and it goes in service and performs so well our customer forgets that it’s even there.
Awesome article in Plant Services written by our very own Chief Operating Officer Matthew Conville! Well done Matthew. Important information here for all maintenance / operations personnel. ... See MoreSee Less
Often in our posts, we use the term “trusted partner.”We have some customers who work side by side with us to solve problems to make their plant more reliable. Their staff comes and works with our staff to find failures and develop solutions. In one case, we had a customer who had continuous bearing failures on a certain style of shaker motor. They would last anywhere from 6 to 11 months at best. These were fairly large shaker motors at 4kW and had 2319 roller bearings in each end. Through several conversations and a defined plan, we’ve been able to more than double the bearing life of the shaker motor, through a bearing style change and updated PM schedule. One motor was taken out of service to check performance at 23 months and it was doing just fine after an inspection.
The insulation system on certain motor components can be complex. The service center needs to understand what materials are best when. Especially, if we are working with customers to make something better or solve a problem. Here’s a picture of a 700HP DC motor’s interpoles that we reinsulated and processed in house. Insulating materials were carefully picked to ensure proper dielectric strength and heat transfer. To remove any potential air voids which can trap heat, the interpoles were VPI’ed in our epoxy resin from STAR Technology, Inc. and potted with a potting compound which has better heat transfer properties than normal. The end result: They look great, have minimal leakage current, have the ability to transfer heat away from the coil and have a protective coating that will allow them to be in service for many years in harsh environments. Well done team! ... See MoreSee Less
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In the electromechanical repair service industry there are several key pieces of equipment that are needed to ensure a electric machine is restored to “as new” conditions. “As new” doesn’t just mean new windings and a new paint job. As an EASA accredited service center we have many QA checkpoints throughout the refurbishment process. One such area is having a burn out oven that has temperature control, chart recording and a few other key attributes to protect the equipment being burned out and employees.
The integrity of the core laminations must not have more than a 20% change in Watts/lb losses pre and post burn to maintain efficiency. If core laminations are burned at too high of a temperature damage can occur to the coating on the lamination steel amongst other things which negatively effect the cores integrity and overall machine efficiency. Maintaining proper core temperature during the burn out process can help achieve that goal.
We partnered with ECO Burn-Off Ovens for this critical step in the refurbishment process. Why? Maintaining part temperature, safety and proper after burner control is crucial for our employees, customers and the environment. They check every box for this. More to come on what this process looks like.
#EASA #EEMSCO #TRUSTEDPARTNER #ACMOTOR #DCMOTOR REWIND ... See MoreSee Less
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Merry Christmas and Happy New Year to you and yours from our EEMSCO family! ... See MoreSee Less
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At EEMSCO, INC. we believe that electrical testing is at the core of reliability and data driven decision making. It also validates that our work was done correctly. While it’s true that you can’t test in quality, you can’t ensure quality without proper testing. As a service center it is our responsibility to know which tests need to be performed when, what test values are to be used and what is the acceptance criteria. There isn’t a one size fits all for electrical testing of rotating equipment.
National Electrical Manufacturers Association (NEMA), IEC (International Electrotechnical Commission), IEEE and EASA to name a few set guidelines for the tests that need to be performed and when. It’s up to the service center to understand these tests and apply them correctly throughout the repair/rewind process. It’s so much more than random wound, inverter duty, form coil, medium voltage, high voltage and DC. All of this information has the possibility of creating human error traps.
We partnered with Electrom Instruments, Inc. to find a way to eliminate the possibility of these error traps. In partnership we were able to develop test configurations that give test values and acceptance criteria for each step of the repair/rewind process for every winding type we encounter with the use of our iTIG IV+. These configurations give us the ability to provide a clear and concise tasks for the employees. It eliminates confusion, frustration and anxiety for the employee. It provides data and confidence to our customers that their asset was properly tested in EVERY step of the process as required.
Each motor has a unique electrical signature. We gather that unique signature throughout the repair process and again after the motor has been assembled and store it. If needed we can take our iTIG IV+ on site to perform tests to compare as left to as installed signatures for troubleshooting purposes or documentation purposes. ... See MoreSee Less
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It’s not often that you see a DC armature with 5 commutator bars per slot. This 5 HP DC motor, may not be big, but it’s mighty. It can produce over 400% of its rated torque.
This motor will get double processed in our epoxy VPI resin for the harsh environment it’s in. At EEMSCO, INC. we’re ready for projects big or small! ... See MoreSee Less
0 CommentsComment on Facebook
EEMSCO offices will be closed on Thursday November 27th and Friday the 28th for the Thanksgiving holiday. We hope you all enjoy your time with loved ones! ... See MoreSee Less
0 CommentsComment on Facebook
Any time you walk through a service center it’s very easy to find works of art.
At EEMSCO, INC. we’ve been curating our insulation system for years. We follow a UL listed system, but we do a few things ourselves to improve upon it. Our biggest improvements are how we process the windings, how stable we keep our resin and when/how we test windings during the refurbishment process.
We do this by sending in resin samples very regularly and making curated and frequent additions to our resin tank to ensure critical attributes of the resin stay consistent and within a very tight tolerance. Our coil partner Precision Coil & Rotorand resin OEM Star Technology Casey Zimmerman are critical to our success. This gives us a very consistent product everytime.
Here’s a result of all that extra time and effort on a 2.3kV motor. This winding truly is a piece of art, however it’s ready to be placed into service where it’ll be put to the test. This motor will just perform day in and day out. Our measure for success - when we refurbish a motor and it goes in service and performs so well our customer forgets that it’s even there.
Great job team!!!
#ACMOTOR #REWINDS #EEMSCO #TRUSTEDPARTNER #RELIABILITY #EASA ... See MoreSee Less
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Awesome article in Plant Services written by our very own Chief Operating Officer Matthew Conville! Well done Matthew. Important information here for all maintenance / operations personnel. ... See MoreSee Less
Why all inverter-rated motor windings are not the same
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Discover why impulse voltage insulation class (IVIC) is critical when selecting IEC motors for converter duty.0 CommentsComment on Facebook
Often in our posts, we use the term “trusted partner.”We have some customers who work side by side with us to solve problems to make their plant more reliable. Their staff comes and works with our staff to find failures and develop solutions. In one case, we had a customer who had continuous bearing failures on a certain style of shaker motor. They would last anywhere from 6 to 11 months at best. These were fairly large shaker motors at 4kW and had 2319 roller bearings in each end. Through several conversations and a defined plan, we’ve been able to more than double the bearing life of the shaker motor, through a bearing style change and updated PM schedule. One motor was taken out of service to check performance at 23 months and it was doing just fine after an inspection.
Well done team!
#EEMSCO #TRUSTEDPARTNER #ACMOTOR #RELIABILITY #PROBLEMSOLVING ... See MoreSee Less
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