Course 4005: Stray Voltage in Higher Load Density Environments


Course Duration: 1 Day

Course Format: Lecture type format with extensive interaction through example discussion.

Target Participants: Utility managers, engineers, technicians and professionals involved with addressing public safety issues with stray voltage in urban areas and with effective investigation & mitigation strategies.

Key Learning Objectives: This seminar introduces the basics of understanding stray voltage in high density loads areas as to the procedures and equipment suitable for conducting consistent and repeatable evaluations of public and private accessible contact voltage situations in a higher load density urban environment.

Course Instructor

Robert Kolt is a professional electrical engineer with a wide range of engineering skills including over 37 years of utility experience in various aspects of power system engineering. Mr. Kolt has been extensively involved in the field of Power Quality including the preparation of technical specifications, leading national organizations on research and development projects and known internationally as a Power Quality Specialist in the preparation of seminars, courses and technical papers. Previous experience involved with the design, commissioning and troubleshooting of associated HVDC equipment including system operation and maintenance. Recently he has been the Chairman of the CEATI Power Quality Interest Group, a member of the CEA Power Quality Task Group and has extensive involvement in Stray Voltage investigation & research projects with CEATI.

Course Highlights

Although useful measurement protocols and procedures exist for some situations, such as measurements in animal contact areas, there are inconsistencies and differences in the procedures used to conduct an assessment of contact voltage problem across some of the other areas of interest in a high density urban environment.

The course provides recommended practices in three major areas of interest. The first is the residential area, where elevated voltage potentials are experienced near swimming pools, hot tubs, faucets, and other residential contact points. The second is the area deals with a faulted secondary phase conductor coming in contact with a metallic object in a location where contact by a human or by an animal is possible. The third includes induced voltages and measurement protocols for pipelines, fences, and other metal structures. The information provided is based on the CEATI report No. TO54700-5131B.

The course concludes with a summary of the existing knowledgebase of current flow though the body and existing standards that can be useful to set new limits or levels of concern.

The following outlines the course highlights:

  • Introduction and Definitions
  • Fundamentals
  • Effects of Stray and Contact Voltages on Humans and Animals
  • Instrumentation and Other Investigation Hardware
  • General Considerations for Investigations and Surveys of Contact Voltage
  • Stray Voltage Measuring Techniques
  • Urban Areas and Other Energized Object Investigations
  • Levels of Concern
  • Mitigation
  • Established and New Levels of Concern
  • Investigations and Cases Studies
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