Order Publications

Reference: 512

Technical Brochures

Final Report of the 2004 - 2007 International Enquiry on Reliability of High Voltage Equipment - Part 4: Instrument Transformers



Results from a world wide utility survey of failures and service experience with instrument transformers rated for 60 kV and above are presented. The surveyed service experience comprises 1 290 335 single phase instrument transformer years. Statistical information about 690 major and 2 489 minor failures - such as origin, cause and failed subcomponent - are provided. In addition, failure frequencies as a function of voltage level, technology, age, design and maintenance strategy are presented.

File Size: 2,8 MB

Pages NB: 193

Study Committee:  A3 ?

WG (TF): WG A3.06

Year: 2012

FREE free
Non member
FREE free

Your AccountYour Account


may download free of charge all publications including most recent ones


Non Members

may download free of charge publications over three years old and purchase all publications