Why Submersible Motors Fail – Part 1

As we look at our submersible motors and their usage, we keep one goal in mind. That goal is quality. Quality products and installations equal long service life and long service life generally equals satisfied customers. Over the years, Franklin has reviewed many motors returned from the field. Along with looking at the returned motor itself, Franklin examines numerous applications and systems, looking for problems which contribute to premature motor failure. In the next few issues of Franklin AID we will share with you some of the ways you can avoid application related problems and get the longest life out of your pump installation.

Although several items in this article apply to single-phase motors and systems, the majority is on three-phase installations. Basically there are three types of motor failures; electrical, mechanical, and mechanical failures that progress into electrical failures. In this issue, we will focus on the electrical side. Continue reading