Monday

This paper covers the evolution of voltmeter training from its inception to the current mandate as of January 1, 2009, from the Department of Energy (DOE) that requires 16 hours of voltmeter training.

Attendees will learn:

• Material covered in the DOE-required course
• Employee skill and knowledge requirements
• Employer responsibilities
• Impact of voltmeter training on technicians in the field
  

Power transformers are critical, capitalintensive assets. This paper will explore advanced diagnostics that should be performed to minimize unplanned outages as a result of apparatus failure.

This paper:

• Identifies routine tests such as power factor, excitation current, turns ratio, winding resistance, dissolved-gas analysis, and more
• Explains advanced testing procedures such as tip-up power factor/capacitance, variable frequency power factor/ capacitance, frequency response of stray losses, and tap check (contact ripple)
• Explores case study examples derived directly from field experiences

The paper will describe the use of Halleffect sensors for adding digital recording and harmonic analysis capabilities to major substation equipment.

Attendees will learn: 

• Use of Hall-effect sensors when monitoring electromechanical relays, circuit breakers, and power transformers
• How to diagnose problems and root causes of equipment failure using Hall-effect sensors
• Review three case studies that illustrate the use of Hall-effect sensors