In today's advanced industrial contexts, accurate diagnosis and subsequent repair of electrical equipment are essential to assure the equipment's continuous efficient operation and production. It is recommended for participants to ask questions at any point during and after the session. It is also advised for delegates to bring up any particular concerns they may have with this course.

Course Objectives:

To develop a structured approach to electrical troubleshooting using common terminology and to provide troubleshooting methods and solutions for various electrical equipment and control systems problems.
To develop a better understanding of various test equipment used in electrical troubleshooting.
To develop a better understanding of various electrical equipment and control systems design, functionality and failure modes.
To better understand work practices, which allow for successful troubleshooting including job plans.
To provide examples of successful troubleshooting techniques and ‘hands on’ experiences plus case studies and group problem solving exercises.
To provide troubleshooting methods and solutions for various electrical equipment and control systems problems.

Who Should Attend?

This course is intended for Electrical Maintenance Engineers, Supervisors and Technicians working in maintenance related roles who need either a greater awareness of, or to become more proficient in, the troubleshooting of electrical equipment and control systems and electrical maintenance activities. Because the methods and examples are generic, personnel from all industries will benefit.

Course Outlines:

The Technology Of Electrical Equipment

Definitions and descriptions of electrical equipment used in industrial applications including:

Source Equipment – transformers

power supplies (UPS)
batteries
generators

Switching Equipment – switchgear

motor control centre (MCC)
disconnects
contactors
overload relays
starters
neutral ground resistors (NGR)

Control Equipment – variable frequency drives (VFD)

programmable logic controllers (PLC)
distributed control systems (DCS)
power monitoring and control
relays and timers
limit switches
temperature switches
pressure switches
level switches
speed switches
vibration switches
safety and shutdown switches
motor/feeder protective devices

Load Equipment – motors (AC induction, asynchronous, DC)

heaters
solenoids
valve actuators
signaling and alarm devices

Troubleshooting Applicable To The Above List

methods
terminology
principles
special techniques

Test Equipment

digital volt meter (DVM)
oscilloscope or oscillograph
megger
hi-pot tester
frequency meter
ammeter (inline, clamp-on)
power meter (watt, VAR)
current transformer
specialized equipment

Typical Problems/Failures

common mode failures
phase imbalance
contact pitting/arcing
electronic control component failure
blown fusing
damaged windings
worn bearings
damaged brushes
burnt ballasts
damaged excitation circuits
battery cell failure
inverter/rectifier failure
high voltage bushing failure
switch failure
ground fault

Typical Troubleshooting Job Plan Development

identify troubleshooting step sequence
prepare procedures
documentation
follow-up
regulatory requirements
training

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