Installation and maintenance of synchronous motors

Synchronous motors are installed in numerous applications within the Pulp and Paper industry, and their reliability is essential to the successful operation of a mill. Critical steps in the installation of synchronous motors are frequently misunderstood and maintenance practices often overlook the most-common causes of motor failure. Limitations on time and resources may exacerbate these deficiencies, but a carefully-planned installation and maintenance program will not burden a mill with excessive work and will ultimately increase reliability of the equipment. The purpose of this paper is to present basic installation theory, as well as a summary of maintenance practices for optimal reliability. Grouting, alignment and protection methods will be discussed to achieve correct installation. Maintenance practices including electrical testing will be discussed along with examples and references.