Research Content
Arc Flash
Analysis and protection options for arc flash in medium-voltage and low-voltage scenarios
Downed Conductors
Approaches to detect and prevent live, downed conductors
Grounding
Analysis of grounding and personnel protection on underground, overhead, and vehicle scenarios
Personnel Protection
Evaluation and tests of equipment and technologies to protect distribution workers
SIFs
Approaches to reduce serious injuries and fatalities
Research Content by Type
Arc Flash Videos
EPRI and utility videos
Guarding Downed Conductors
Video for training workers guarding downed conductors
Identifying Patterns of Downed Conductors
Training for operators to identify patterns of live, downed conductors
Personnel Protection and Grounding for Underground Cables
Video covering personnel protection and grounding on underground cables
Proper Wear of Arc-Rated Clothing
Short video describing the importance of buttoning and tucking arc-rated FR shirts
Tests on Personnel Protection and Grounding on an Overhead Line
Video covering staged tests of personnel protection and grounding on an overhead line
Video on High-Impedance Faults and Downed-Conductor Detection
Background on research on downed conductors
Video on Vehicle Grounding and Ground Hazards around Distribution Circuits
Practical takeaways from tests and analysis of hazards at ground level
Arc Flash in a Padmounted Switch
Models the arc flash incident energy based on tests of PMH padmounted switches
Comparison of TCC Clothing Curves
Compare TCC curves for different scenarios and assumptions
Coordination of Burndowns on Overhead Conductors
Compares burndown curves of various overhead conductors to the clearing times of relayed circuit breakers
Coupling Between Overhead Lines
Models coupling from electric and magnetic fields
Currents and Fields from Two Underground, Coupled Cables
Models coupling from an underground cable to a nearby abandoned cable
Ground-Potential Rise from Line-to-Ground Faults
Models the ground-potential rise from a fault on an overhead line
Ground-Potential Rise from Line-to-Ground Faults (IEC)
Models the ground-potential rise from a fault on an overhead line
Impacts of a DER Grounding Bank on Arc Flash
Models the impact of a DER grounding bank on the clearing time and incident energy
Impacts of a DER Grounding Bank on Arc Flash with Phase and Ground Relays
Models the impact of a DER grounding bank on the clearing time and incident energy for both phase and ground relays
Personnel Protection on Underground Systems: Adjacent Fault
Models touch voltages induced on a cut cable during a fault on a parallel cable
Personnel Protection on Underground Systems: Ground-Potential Rise
Models touch voltages induced on a cut cable during a fault where there is a ground-potential rise at the substation
Sizing Temporary Protective Grounds
Size TPGs based on fault duty
Utility Antenna Attachment Requirements
Requirements from selected utilities, including structure requirements and minimum separations
A Safety Clamp to Protect against Burndowns when using Line Hose
Reduce hazards to workers from burndown of conductors at rubber coverup
Downed Conductors from Arc Damage
Arcing damage and burndowns on bare and covered wire
Forensics Analysis of a Corroded Automatic Splice
Failure due to corrosion
Forensics Analysis of a Failure of an Automatic Splice
Failure due to improper installation
Content Details
Arc Flash
Analysis and protection options for arc flash in medium- and low-voltage scenarios
Live, Downed Conductors
Approaches to detect and prevent live, downed conductors on distribution systems
- Detecting Live, Downed Conductors
- Burndown Hazards
- Equipment Failures that can Cause Downed Conductors
- Backfeeds on Distribution Systems
- Video: Guarding Downed Conductors
Grounding and Personnel Protection Practices
Analysis of grounding and personnel protection on overhead, underground, and vehicle scenarios
- Fundamentals of Grounding for Personnel Protection
- Grounding and Personnel Protection on Overhead Systems
- Grounding and Personnel Protection on Underground Systems
- Understanding Hazards
- Protection Options and Guidelines
- Different Scenarios
- Examples of Work Methods
- Questions and Answers
- App: Personnel Protection on Underground Systems: Adjacent Fault
- App: Personnel Protection on Underground Systems: Ground-Potential Rise
- Video: Personnel Protection and Grounding for Underground Cables
- Vehicle Grounding and Personnel Protection
Personnel Protection
Evaluation and tests of equipment and technologies to protect distribution workers
- Electrical Performance of Plastic Guards
- Electrical Performance of Footwear for Distribution Workers
- Personal Voltage Detectors
Serious Injuries and Fatalities
Approaches to reducing SIFs
- SIFs Library
- 2024 SIFs Workshop
- 2024 Underground Workshop
- 2023 Overhead Workshop
- 2023 Underground Workshop
- Fast Trips during Hot Line Tags
The content described here is for members of the Distribution Safety and Work Practices project. You’ll need an EPRI username and password.