Order Publications

Reference: ISH2015_631

Type:
ISH Collection
Title:

Electric fields and arc protection during live-line maintenance

 

Abstracts

Limits of extra low frequency electric fields are defined by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). There are separate values for both public and occupational exposures. In case of live-line maintenance (LLM) - especially at high voltage levels - electric field values above the limits may occur. Conductive clothing acting as a Faraday cage are widely used to shield these fields, but the efficiency of them depends on many different parameters, such as the size of the openings, or the "Faraday-holes". This paper investigates the electrical properties of different clothing with different ways of face protection as a function of the voltage level and the distance from the phase conductor. Critical parameters are also defined. Another important and practical question during high voltage LLM is the inspection of the need of arc protection and/or flame retardancy for a given clothing. Although during these special activity increased safety rules apply, a complete risk analysis has been executed to estimate the possible sources of danger.
 

File Size: 537,3 KB

Year: 2015

 
 
 
Download
Member
FREE free
Non member
FREE free
 

Your AccountYour Account

Password forgotten

Members

may download free of charge all publications including most recent ones


Non Members

may download free of charge publications over three years old and purchase all publications

ContactContact

For any questions in connection with the on-line library, contact:


Publications and Editions Manager

publications@cigre.org