Electrical engineering courses

Maintaining & troubleshooting electrical equipment

Ref No: 2015052

COURSE DESCRIPTION
This course utilizes lectures, student participation, videos, LCD slides, a workbook, and the International Electrical Testing Association (NETA) “Maintenance Testing Specifications.” This course addresses the main elements of Electric Distribution Equipment Maintenance: safety; equipment and system principles and operation; inspection, test, evaluation, and maintenance procedures; and electrical maintenance programs.
Discussion of electric safety procedures includes safety awareness, minimum approach distances, care and use of personal protective equipment, lockout-tagout, safety grounding, step and touch potentials, and special hazards of electric power distribution equipment. This course covers electrical safety training as required by OSHA (Occupational Safety and Health Administration – USA) for qualified electrical workers.
The types of equipment and systems presented include cables and buses, switchgear circuit breakers, liquid-filled and cast-coil/dry-type transformers, instrument transformers, meters and protective relays, surge arresters, and capacitors. Discussions include equipment operation and descriptions of the various inspection, testing, evaluation, and maintenance procedures available for the equipment and the test equipment and outage requirements for the various procedures.  The course will include references to British (BS), European (IEC), and United States (ANSI, IEEE, NEC) engineering standards. Participants are encouraged to bring their system single-line diagrams and recent problems for discussion during and after class. Practical electrical inspection, test, evaluation, and maintenance training based on NETA Maintenance Testing Specifications and the course director’s 36 years experience in the electric power field will be presented.

COURSE OBJECTIVES
Upon completion of this course, you will have gained a working knowledge of: 
Electrical, magnetic, and dielectric principle necessary to understand electrical equipment operation. 
The operation and use of electric power distribution equipment and systems. 
The safety hazards related to electric equipment maintenance and use of proper safety precautions. 
Proper inspection, testing, and maintenance procedures necessary to minimize failures and extend equipment life. 
Engineering principles that are fundamental to effective maintenance practices and trouble-shooting.

TRAINING METHODOLOGY
This interactive training course includes the following training methodologies as a percentage of total tuition hours:-
50% Lectures
30% Workshops, Group Work & Practical Exercises
20% Videos & Software
 

Welcome & Introduction
Electric Power and Dielectric Principle
Electric and magnetic fields and the Electric Power System; Behavior of dielectric (insulation) materials; Conducting and insulating materials; Three-phase power calculations 

Electric Power and Dielectric Principles (cont’d)
Transformer principles; Short-circuit currents; 

Electric Power and Dielectric Principles (cont’d)
Electrical problems and corrective actions; Excess heat and voltage; Deterioration and contamination; Partial discharge (corona) 

Electrical Safety
Hazards working near or on energized electrical equipment; Safeguards for preventing shock; “Qualified electrical workers” as defined by OSHA; Use and care of electrical personal protective equipment; Proper lockout-tagout procedures
Electrical Safety (cont’d)
Minimum approach distances for non-qualified and qualified electrical workers; Use and care of safety grounding sets; Estimating short-circuit currents and sizing safety grounding cables; Equipment safety interlocks; Understanding step-touch potential hazards.

Low and Medium Voltage Cables and Buses
Types, construction, and applications; Inspections, tests, and evaluations; Common failure modes; Cable/Bus safety

MV and LV Switchgear Circuit Breakers
Types and ratings; LV switchgear circuit breakers; Overcurrent sensing; Typical time-current-curves (TCCs) 

MV and LV Switchgear Circuit Breakers (cont’d)
Inspections and tests 
Power Transformers
Types, Ratings, and Connections; Two-winding; Zigzag Grounding; Auto-transformers and Tertiaries

Power Transformers (cont’d)
Tap Changers; De-energized tap changers (DETC); Load Tap Changers (OLTC) and Controls 

Power Transformers (cont’d)
Inspections and Tests; Factory tests; Field tests; Oil and Gas Analysis 

Power Transformers (cont’d)
Failure Modes and Detection; Voltage; Current; Buchholz and Similar Relays
Instrument Transformers
Types and Uses of Current and Voltage Transformers; Inspections and Tests

Instrument Transformers (cont’d)
Common failure modes and CT/VT safety
Meters and Protective Relays
Types and Uses; Analog vs. Electronic

Meters and Protective Relays (cont’d)
Inspection and Tests; Meter/Relay Cautions and Safety

Surge Arrestors
Types and Ratings; Inspections and Tests  

Capacitors
Types of banks and their connection; Power factor correction; Connection points; Harmonic considerations 

Capacitors (cont’d)
Inspection and testing

Electrical Maintenance Program
Testing intervals; InterNational Electrical Testing Association (NETA) Specifications
General Discussion, Questions and Answers 
Presentation of Certificates


 

This course is designed for those involved with the planning, implementation, and/or supervision of electrical preventive maintenance (EPM) programs for electric power equipment in industrial plants, utilities, and commercial facilities. You should be interested in learning how electrical power distribution equipment and systems operate, and how to maintain and trouble-shoot the equipment safely and effectively.

Trainees shall receive a portfolio containing a comprehensive course manual.

Attendees shall receive a certificate of attendance from AMAD Tech.