Transmission Line Installation
COURSE DESCRIPTION
Transmission line installation is a complex job that requires extensive planning, careful coordination or manpower and equipment, and a thorough mastery of construction procedures and techniques. This training program focuses on the part of that job involved with installing conductors on a structure.
COURSE GOAL
The tasks that are covered included planning the job, pulling wire, sagging wire, and clipping-in, which is the process of permanently attaching a conductor to a string of insulators.
SUBJECTS AND OBJECTIVES
Job Planning
Explain some of the basic considerations for planning a transmission line installation job.
Describe or demonstrate how to determine the length of wire needed for stringing, how to calculate the average span length, and how to calculate a ruling span.
Explain what guard structures are and when they are used.
Job Preparation
Explain the basic preparation necessary for stringing wire.
Describe some of the basic equipment that must be assembled in preparation for stringing wire.
Explain where the equipment necessary for stringing wire is generally placed on the section of line being strung.
Explain why it is important to pull wire under tension.
Pulling Conductor
Describe or demonstrate how a pilot line is pulled into position.
Describe or demonstrate how a bull line is pulled into position.
Describe or demonstrate how a conductor is pulled into position.
Explain the basic concerns associated with the pulling process.
Sagging, Part 1
Explain the purpose of sagging wire and basic considerations that must be taken into account when sagging wire.
Explain the preparations that must be made in order to sag wire.
Describe or demonstrate how a dynamometer can be used for sagging wire.
Sagging, Part 2
Describe or demonstrate how a transit or a sagging scope can be used for sagging wire.
Describe or demonstrate the stopwatch method of sagging.
Clipping-In
Demonstrate and explain the basic process of clipping-in.
Identify some additional items that may be installed on transmission lines.