Cable Fault Location and Tracing, Medium Voltage

Cable Fault Location and Tracing, Medium Voltage
Cable Fault Location and Tracing,
Medium Voltage
CTFLMV-132, Rev1-4.5 DAYS-2016
4.5 Days, 3.6 CEUs
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 electricians and technicians that install, maintain, repair or troubleshoot
5-35 kV solid dielectric power cables. The student should have
some field experience and basic knowledge of AC/DC electricity.
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.
•
•
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.
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 cable
field lab environment.
SCOPE
Day 1*
I.
Introduction
A. Schedule
B. Course Outline
II.
Introduction To Power Cable
A. Purpose of Power Cables
B. Power Cable Construction
C. Power Cable Termination
D. Conditions Causing Cable Faults
E. Fault Locating Safety
III. Power Cable Identification &
Tracing
A. Safety Precautions
B. Cable Identification
C. Tracing Methods and Technology
D. Direct Coupling Method of Tracing
E. Signal Tracing Using Integrated
Antenna
F. Modes of Operation for the
Receiver
IV. Earth Gradient Fault Location
A. Safety Precautions
B. Principles of Operation MEGGER ESG NT
C. Connections and Controls
D. Basic Operation of the Indicator
Unit
E. Setting Adjustments
F. Locating the Fault
Day 2
V.
TDR Cable Fault Location
A. Safety Precautions
B. Purpose for Power Cable Fault
Location
C. Principles of Operation
D. Time Domain Reflectometer
(TDR)
E. TDR Used with the HV Cable
Fault Locator
F. Cable Fault Location Testing
G. Evaluation of Test Results
VI. Cable Fault Location
A. Safety Precautions
B. Purpose for Power Cable Fault
Location
C. Cable Fault Locating Methods
D. Cable Fault Locating
Day 3
VII. Cable Fault Location and Tracing
Labs
A. Cable Identification using
Megger CI Cable Identifier Test
Set
B. Cable Test using a 5/10 kV
Megohmeter
C. Cable Fault Pre-locating using
Time Domain Reflectometer
*Class scheduling times may vary based on discussions and size of class
D. Cable Tracing using the Megger
Easyloc Line Location System
E. Earth Gradient Cable Fault
Location using the Megger ESG
NT Earth Fault Locator
F. EZ Thump Cable Fault Location
using Digiphone Acoustic and
Magnetic Tracer
G. Fault Tracing Using the Megger
Digiphone Acoustical and
Magnetic Tracer
H. Smart-Thump Cable Fault
Location using Digiphone
Acoustic and Magnetic Tracer
Day 4
I. Cable Fault Locating Tracing
Labs (Continued)
Day 5
VII. Conclusion
A. Final Exam
B. Completion of Course
Paperwork
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