Standard icon


C57.139-2015 - IEEE Guide for Dissolved Gas Analysis in Transformer Load Tap Changers

Description: General types of load tap changer (LTC) mechanisms, breathing configurations, and electrical designs, described for reference for determining methods of testing and evaluating dissolved gases in mineral-based transformer oils in LTCs, are discussed and recommended in this guide. Measurements of dissolved gas concentrations in the LTC oil are required to implement this guide. This guide is not manufacturer specific, rather category specific. ** Downloads file posted at
  • Status: Active Standard Help

Get This Standard

Buy Purchase a copy of this standard Buy External Link
Buy VuSpec CD ROM This standard can be purchased as part of the following VuSpect CD:
- IEEE Power, Distribution & Regulating Transformers Collection: VuSpec™ Buy
Access with Subscription External Link Standards Online subscribers can access this standard in IEEE Xplore Digital Library. Access Learn More