IEEE 1665-2009

IEEE 1665-2009 is a technical guide for the rewind of synchronous generators rated 1 MVA and above, covering both 50 Hz and 60 Hz machines. It addresses the practical engineering steps involved in restoring generator windings, insulation systems, and related construction details after repair or refurbishment. For power and industrial equipment owners, this standard helps support consistent rewind practices, better documentation, and more reliable machine performance. It is an inactive standard, but it remains relevant for reference and legacy equipment work.

What is IEEE 1665-2009?

This guide provides a focused framework for rewinding synchronous generators used in power generation and industrial applications. IEEE 1665-2009 is intended to help define acceptable practices for rebuilding stator and rotor windings, selecting suitable materials, and maintaining electrical and mechanical integrity during repair. It is especially relevant where generator performance, insulation condition, and long-term serviceability must be preserved. As a technical document, it supports more uniform decision-making when evaluating rewind procedures for larger rotating machines.

Where is IEEE 1665-2009 used?

IEEE 1665-2009 is commonly applied in maintenance shops, generator overhaul facilities, and utility or industrial repair programs that service synchronous generators. It is relevant to equipment used in power stations, process plants, and other facilities where large rotating generators operate at 50 Hz or 60 Hz. The guide may also be used when specifying rewind work, reviewing repair reports, or comparing contractor methods for machines rated 1 MVA and above. Its context is practical repair engineering rather than general electrical design.

Why is IEEE 1665-2009 important?

For rewind projects, IEEE 1665-2009 helps bring consistency to repair planning, materials selection, and workmanship expectations. That matters because generator rewinds can affect insulation life, thermal behavior, electrical performance, and overall reliability. Using a recognized guide can reduce variation between vendors and support clearer procurement and acceptance reviews. It also helps maintenance teams document repair decisions and manage risk when returning large synchronous generators to service.

• Synchronous generators, 1 MVA and above
• 50 Hz and 60 Hz machine applications
• Rewind practices and repair guidance
• Insulation, winding, and rebuild considerations
• Legacy reference for generator maintenance work