CTFLMV-132, Rev1-4.5 DAYS-2016

Cable Fault Location and Tracing, Medium Voltage 4.5 Days, 3.6 CEUs

SCOPE

Medium voltage cable systems are the backbone of electrical systems worldwide, yet often they are the most ignored part of the power system – until there is a failure. One of the most important aspects of medium voltage cable maintenance is “fault location.” Cable systems today have higher failure rates than ever before due to aging, environmental stresses and improper installation. The ability to efficiently locate faults greatly reduces downtime thus outage costs.

Pre-Requisites:This hands-on course is intended for new or experienced electri-cians and technicians that install, maintain, repair or troubleshoot 5-35 kV solid dielectric power cables. The student should havesome field experience and basic knowledge of AC/DC electricity.

PPE Requirements:AVO is committed to the personal safety of each participant and requires appropriate wearing apparel for lab activities. Long pants and ANSI rated “safety toe” work shoes are acceptable as meeting this requirement.

Learning Objectives:Upon completion of this course, the participant will be able to: • Identify medium voltage cable components and causes of

failure. • Utilize safe work practices for cable testing per OSHA and

industry consensus standards. • Trace cable installations with modern cable route tracing

and identification equipment.• Locate secondary faults using earth gradient (sheath fault)

technologies. • Pinpoint faults using magnetic and acoustical tracing

system and arc reflection technologies. • Apply a proven fault locating process; Test, Analyze,

Localize, Locate to locate faults in a comprehensive cablefield lab environment.

Day 1*I. Introduction

A. ScheduleB. Course Outline

II. Introduction To Power CableA. Purpose of Power CablesB. Power Cable ConstructionC. Power Cable TerminationD. Conditions Causing Cable FaultsE. Fault Locating Safety

III. PowerCableIdentification&Tracing

A. Safety PrecautionsB. CableIdentificationC. Tracing Methods and TechnologyD. Direct Coupling Method of TracingE. Signal Tracing Using Integrated

AntennaF. Modes of Operation for the

Receiver

IV. Earth Gradient Fault LocationA. Safety PrecautionsB. Principles of Operation -

MEGGER ESG NTC. Connections and ControlsD. Basic Operation of the Indicator

UnitE. Setting AdjustmentsF. Locating the Fault

Day 2V. TDR Cable Fault Location

A. Safety PrecautionsB. Purpose for Power Cable Fault

LocationC. Principles of OperationD. TimeDomainReflectometer

(TDR)E. TDR Used with the HV Cable

Fault LocatorF. Cable Fault Location TestingG. Evaluation of Test Results

VI. Cable Fault LocationA. Safety PrecautionsB. Purpose for Power Cable Fault

LocationC. Cable Fault Locating MethodsD. Cable Fault Locating

Day 3VII. Cable Fault Location and Tracing

LabsA. CableIdentificationusing

Megger CI Cable IdentifierTestSet

B. Cable Test using a 5/10 kVMegohmeter

C. Cable Fault Pre-locating usingTime Domain Reflectometer

D. Cable Tracing using the MeggerEasyloc Line Location System

E. Earth Gradient Cable FaultLocation using the Megger ESG NT Earth Fault Locator

F. EZ Thump Cable Fault Locationusing Digiphone Acoustic and Magnetic Tracer

G. Fault Tracing Using the MeggerDigiphone Acoustical and Magnetic Tracer

H. Smart-Thump Cable FaultLocation using Digiphone Acoustic and Magnetic Tracer

Day 4I. Cable Fault Locating Tracing

Labs (Continued)

Day 5VII. Conclusion

A. Final ExamB. Completion of Course

Paperwork

*Class scheduling times may vary based on discussions and size of class