IEEE 1243:1997

Name: IEEE 1243:1997
Brand: IEEE

Withdrawn

GUIDE FOR IMPROVING THE LIGHTNING PERFORMANCE OF TRANSMISSION LINES

Withdrawn date

07-21-2023

Published date

12-16-1997

Publisher

Institute of Electrical & Electronics Engineers

1 Overview
1.1 Scope
1.2 Purpose
1.3 Disclaimer
2 References
3 Definitions and Acronyms
3.1 Definitions
3.2 Acronyms
4 Route selection
4.1 Lightning frequency of incidence
4.2 Route effects
4.3 Structure height
4.4 Soil resistivity
4.5 Adjacent environment
5 Shielding
5.1 Shielding angle
5.2 The final leader step
5.3 Structure height
5.4 Shielding and engineering
5.5 Shielding of the center phase
5.6 Overhead ground wire size and operating losses
6 Insulation
6.1 Effect of voltage waveshapes
6.2 Effect of insulation levels and insulation type
6.3 Wood or fiberglass in series with insulators
6.4 Effect of power-line voltage
7 Tower footing impedance
7.1 Composite line performance
7.2 Supplemental grounding
7.3 Counterpoise
7.4 Resistance of complex footings
7.5 Special grounding effects
8 Special methods of improving lightning performance
8.1 Additional shield wires
8.2 Guy wires on transmission towers
8.3 Ground wire on separate structures
8.4 Line surge arresters
8.5 Unbalanced insulation on double-circuit lines
8.6 Active air terminals
Annex A (informative) Isolated bonding of wooden structures
Annex B (normative) The FLASH program
Annex C (informative) Bibliography

The effects of routing, structure type, insulation, shielding, and grounding on transmission lines are discussed.

DocumentType	Standard
ProductNote	THIS STANDARD ALSO REFERS TO ΑΝSI C2−1997, ANSI C29.8-1985
PublisherName	Institute of Electrical & Electronics Engineers
Status	Withdrawn

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