Description: This document describes the recommended procedure for measuring insulation resistance of armature and field windings in rotating machines rated 1 hp, 750 W or greater. It applies to synchronous machines, induction machines, DC machines, and synchronous condensers. Contained within this document is the general theory of insulation resistance (IR) and polarization index (PI), as well as factors affecting the results, test procedures, methods of interpretation, test limitations, and recommended minimum values.
Get This Standard
Buy Purchase a copy of this standard Buy
Buy VuSpec CD ROM This standard can be purchased as part of the following VuSpect CD:
- IEEE Electrical Machinery Collection Buy
Access with Subscription Standards Online subscribers can access this standard in IEEE Xplore Digital Library. Access Learn More