High Voltage Terminations
COURSE DESCRIPTION
High-voltage cables are manufactured to exact specifications so that they can withstand a variety of mechanical and electrical stresses. When a high-voltage cable is terminated for a connection to a circuit or equipment in a substation or switchyard, the termination must also be made to exact specifications. If this is not done, the termination could become a weak point in the circuit.
COURSE GOAL
This program describes the components of high voltage terminations and demonstrates how high voltage terminations are made.
SUBJECTS AND OBJECTIVES
Cable Construction
Describe how voltage stress can cause a cable to fail.
Identify the main components of a high-voltage cable.
Describe the function of each component of a high-voltage cable.
Principles of Cable Termination
Explain how a high voltage termination provides voltage stress control
Explain how a high voltage termination provides protection against tracking.
Explain how a high voltage termination provides a seal to the environment
15-kV Class PILC Cable Preparation
Identify the components of a PILC cable.
Describe or demonstrate how to prepare a three-conductor PILC cable for termination.
15-kV Class PILC Cable Termination
Describe or demonstrate how to build a stress cone on a three-conductor PILC cable.
Describe or demonstrate how to attach connector stems.
Describe or demonstrate how to install and assemble a pothead onto a cable.
Describe or demonstrate how to seal a three-conductor PILC cable termination.
69-kV Solid Dielectric Cable Preparation
Identify the components of a high-voltage solid dielectric cable.
Describe or demonstrate how to prepare a single-conductor dielectric cable for a termination.
69-kV Solid Dielectric Cable Termination
Describe or demonstrate how to apply the tapes used to make a termination on a single-conductor 69-kV solid dielectric cable.
Describe or demonstrate how to install the insulator hoods and connector for a taped termination on a single-conductor 69-kV solid dielectric cable.