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 GOALS
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.