Measurement of 3rd Party Exposure to Rise of Earth Potential

Apr 2013

Electricity Transmission

Reference:

Status: Live

Start Date: Apr 2013

End Date: Unknown

Funding Licencee(s): National Grid Electricity System Operator

Contact: National Grid TO Innovation Team

Funding Mechanism Innovation Funding Incentive

Research Area: None

Core Technology(ies): Health and Safety

Estimated Expenditure: £170,000.00

Introduction: The ROEP at a number of our sites exceeds 650 V (Hot Sites), creating a possible transferred potential hazard to third parties in the vicinity of the site, as a consequence of metallic services to properties e.g. telephone, LVAC, gas, water etc.

The transferred potential hazard may result in personal injury and/or damage to electrical equipment, in particular telecommunications equipment.

Objectives: This project is propose to determine the hot zones and transferred potentials in electrical installations and establishes better procedures for a full risk assessment using probabilistic methods.