Research Content

Research content for distribution safety and work practices

Research Content by Topic

Arc Flash

Analysis and protection options for arc flash in medium- and low-voltage scenarios

Downed Conductors

Approaches to detect and prevent live, downed conductors on distribution systems

Grounding

Analysis of grounding and personnel protection on overhead, underground, and vehicle scenarios

Personnel Protection

Evaluation and tests of equipment and technologies to protect distribution workers

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

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

Coupling Between Underground 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

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 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

Grounding and Personnel Protection Practices

Analysis of grounding and personnel protection on overhead, underground, and vehicle scenarios

Personnel Protection

Evaluation and tests of equipment and technologies to protect distribution workers

The content described here is for members of the Distribution Safety and Work Practices project. You’ll need an EPRI username and password.