ELECTRIC MOTOR & MECHANICAL SERVICES.

Eemsco

1 week ago

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

Eemsco

3 weeks ago

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

Eemsco

1 month ago

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

Eemsco

2 months ago

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