IEEE 1243:1997
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
GUIDE FOR IMPROVING THE LIGHTNING PERFORMANCE OF TRANSMISSION LINES
21-07-2023
16-12-1997
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
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| ProductNote |
THIS STANDARD ALSO REFERS TO ΑΝSI C2−1997, ANSI C29.8-1985
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| PublisherName |
Institute of Electrical & Electronics Engineers
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| Status |
Withdrawn
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