Locating Primary Faults

COURSE DESCRIPTION

This course is a general introduction to fault location in primary URD cable. The course covers capacitor discharge equipment, how it is used to locate faults, and a demonstration of how to locate a cable fault.

COURSE GOALS

• Describe the features, controls, and functions of the power source for one type of capacitor discharge unit.

• Describe two types of tests commonly performed on primary URD cables.

• Describe how to use capacitor discharge equipment to locate a primary cable fault.

SUBJECTS AND OBJECTIVES

Introduction

• Explain what a ground fault is.

• List the essential components contained in URD fault-locating equipment.

Capacitor Discharge Unit

• Identify and explain the purpose of the controls on a typical capacitor discharge test unit.

• Explain the function of the high potential (hi-pot) test.

• Explain the function of the capacitor (cap) discharge test.

Locating a Primary Cable Fault

• Interpret a system diagram.

• Describe how to verify that a cable is dead.

• Explain how to connect the cables on a capacitor discharge test unit so that it can be used to test for cable faults.

• Describe how to use a pickup and detector with a capacitor discharge test unit.

• Describe how to use a capacitor discharge test unit to pinpoint the location of a fault.