• Overview

• Services Programs

• Consulting & Condition
       Assessment Services
• Power Transformer Services
• Rotating Machinery Services
  • On-line partial discharge
  • Electromagnetic interference survey
  • Iso-phase bus condition assessment
  • Generator condition assessment
  • Motor condition assessment
• Power Cable Services
• Network & Substation Services
• 
• Laboratory Services

• Equipment Rentals

• Doble Resource Library

• Web-based Training

Electromagnetic Interference Survey

An Electromagnetic Interference (EMI) Diagnostics survey from Doble is an online, non-invasive test that can detect a wide variety of defects in generators, motors and associated electrical system components. Trending data is not required and maintenance recommendations can be provided on the very first test. EMI data collection follows the international standard CISPR 16. The test equipment is very sensitive and measurement accuracy is traceable to national standards.

EMI Diagnostics has been successfully performed on electric power systems since 1980. It has been proven with over 8,000 successful field tests on more than 500 different designs with over 70 types of defects and conditions identified, catalogued and verified.

The acquired radio frequency spectrum, or EMI signature, is unique for each physical location and defect present within the electrical system. EMI Diagnostics can detect a wide variety of electrical and mechanical system component defects in:

• Generators
• Motors
• Transformers
• Iso-phase bus
• Cables
• Switchgear
• Associated electrical system components