TRANSFORMERS, SWITCHGEAR, CIRCUIT BREAKERS, RELAYS, CAPACITORS, SURGE ARRESTERS, CABLES & METERS

Course Introduction

This intensive training 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 anduse 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 instructor’s extensive practical experience in the electric power field will be presented.

Objectives

By the end of the training, participants will be able to:

• Apply and gain an in-depth knowledge on installation, operation, testing, optimization, maintenance and troubleshooting of electric distribution system equipment
• Explain standards and regulations as well as electric power and dielectric principle
• Analyze low and medium voltage cable and buses and discuss a general overview of MV and LV equipment
• Describe MV and LV switchgears and circuit breakers and review power and instrument transformers
• Reviews urge arrestors, capacitors, meters and protective relays
• Employ electrical safety and employ electrical maintenance program
• Perform exercises with troubleshooting electrical circuits 1 simulator.

Training Methodology

This interactive training course includes the following training methodologies as a percentage of the total tuition hours:-

• 30% Lectures, Concepts, Role Play
• 70% Workshops & Work Presentations, Techniques, Based on Case Studies & Practical Exercises, Software & General Discussions
• Pre and Post Test

Target Audience

This course is intended for those who are involved with the planning, implementation, and/or supervision of electrical preventive maintenance (EPM) programs of electric power equipment in industrial plants, process plants, oil/gas fields, refineries, petrochemical plants, utilities and commercial facilities. You should be interested in learning how electrical power distribution equipment and systems operate and how to maintain and troubleshoot the equipment safely and effectively.

Daily Topics

DAY I.

• Pre-Test
• Introduction
• Standards & Regulations
• Electric Power & Dielectric Principle
  • Electric& Magnetic Fields & the Electric Power System, Behavior of Dielectric(Insulation)Materials, Conducting & Insulating Materials
  • Three-Phase Power Calculations, Short-Circuit Currents, Calculations &

Equipment’s &Materials Stress

• Electrical Problems & Corrective Actions, Excess Heat & Voltage, Deterioration &Contamination, Partial Discharge (Corona)

• Low & Medium Voltage Cables & Buses
  • Types, Construction, Applications, Ratings, Cable Joints, Bus Bars & Buses Accessories, Inspections, Tests, Evaluations, Common Failure Modes & Failure Location, Cable/Bus Safety

DAY II.

• General Overview of MV & LV Equipment
  • Types & Applications
• MV & LV Switchgears & Circuit Breakers
  • LV Switchgears Types & Ratings, LV Switchgear Circuit Breakers – Types & Ratings, Overcurrent Sensing, Typical Time-Current-Curves (TCCs), LV Circuit Breakers Selectivity
  • Types & Ratings of MV Switchgears, MV Switchgear Circuit Breakers- Types, Ratings &Operating Mechanisms, Protection Relays, Inspections & Tests
• Power Transformers
  • Transformers Principles & Parameters, Types & Applications, Connections (Vector Group),Two-Winding, Zigzag Grounding, Auto-Transformers &Tertiaries

• Tap Changers, De-Energized Tap Changers (DETC), Load Tap Changers (OLTC) & Controls, Built-on Protections (Buchholz & Similar Relays), Cooling Systems, Fire Fighting

DAY III.

• Power Transformers(cont’d)
  • Parallel Operation of Transformers, Accessories, Failure Modes & Detection, Inspections &Tests, Factory Tests, Field Tests, Oil & Gas Analysis
• Instrument Transformers
  • Characteristics & Functions, Types & Ratings, Connections, Inspections & Tests, Common Failure Modes & CT/VT Safety
• Surge Arrestors
  • Types & Ratings, Inspections & Tests
  • Capacitors Types of Banks & Their Connection, Power Factor Correction, Connection Points, Harmonic Considerations, Inspection & Testing
• Meters & Protective Relays
  • Types of Meters & Applications, Types & Application of Protective Relays, Typical Connection Diagrams, Measurement Transducers

DAY IV.

• Meters & Protective Relays (cont’d)
  • Inspection & Tests, Meter/Relay Cautions & Safety
• Electrical Safety
  • Hazards Working Near or on Energized Electrical Equipment, Electrical Shock & Effects, Arc Flash, Safeguards for Preventing Shock
  • De-Energized & Energized Works, Permit to Work, Tools & Test equipment Use & Care of Safety Grounding Sets, Use & Care of Electrical Personal Protective Equipment, Tools & Test equipment
  • Safety Distances, “Qualified Electrical Workers” as Defined by OSHA, Minimum Approach Distances for Non-Qualified and Qualified Electrical Workers, Proper Lockout-Tag out Procedures
  • Equipment Safety Interlocks, Step & Touch Potential (Definition & Hazards)

DAY V.

• Electrical Maintenance Program
  • Maintenance Actions, Testing Intervals, International Electrical Testing Association(NETA) Specifications
• Practical Exercises with Troubleshooting Electrical Circuits 1 Simulator
• Course Conclusion
• Post-Test and Evaluation

For registration & more information please contact

NAYEL Training Centre 

T: +971 4 379 7245 | M: +971 50 249 6876 |WhatsApp:  +971 50 249 6876

Email [email protected]