This course introduces to an electrical engineer/technician and/or maintenance technician, complete transformer technology and terminology. It also discusses special transformers, transformer components, and materials, transformer cooling, transformer performance, electrical parameters and transformer faults. During the course, participants will be able to apply proper protection, operation and factory acceptance test (FAT), install, test and commission transformer and carryout transformer maintenance, routine inspections, diagnostic analysis, life expectancy and extension.
By the end of the course, participants will be able to:
Operate, maintain, troubleshoot and test power transformers in expert manner.
Deliberate the basic concepts of transformers, covering the main electric parameters and laws, magnetism and electromagnetism, Lenz and Faradays Laws, circuits, star and delta connections, theory, the role of transformers in power systems, standards, regulations and voltages.
Recognize the various types and construction of transformers.
Define special transformers as well as number transformer components and materials.
Regulate cooling of transformers, transformer performance and electrical parameters.
Who should attend
This course provides an overview of all significant aspects and considerations of transformers in accordance with the international standards for those who are involved in the sizing, selection, operation, inspection, maintenance and troubleshooting of transformers. This includes electrical engineers and electricians as well as other technical staff who need a sound understanding of power transformer operation, maintenance, troubleshooting or testing.
- Main Electric Parameters and Laws – Magnetism and Electromagnetism – Lenz & Faraday’s Laws
- Single and Three-phase Circuits (3 and 4 Wires) – Star (Y) & Delta (Δ) Connections –
- Basic Transformer’s Theory – The Role of Transformers in Power Systems –
- Standards and Regulations – Standard Voltages
- Oil-filled Transformers with Expansion Tanks-Oil-filled Sealed Transformers-Dry Transformers –
- Gas Insulated Transformers (GIT) – Two and Three Windings Transformers – Applications
- Single Phase Transformers-Autotransformers-Arc Furnace Transformers –
- Rectifier Transformers-Zig-Zag & Grounding Transformers-Instrument Transformers
- Steel Core-Copper and Aluminum Windings-Insulation Materials –
- Expansion Tank and Radiators
- Expansion Tank and Radiators – Bushings -Cooling System-
- Tap Changers- Built-on Protections-Accessories
- Heat Dissipation & Load – Environment & Cooling of Transformers –
- Cooling Fluids – Types of Cooling Systems & Notations (ONAN; ONAF; OFAF; OFWF; AN; GIT)
- Rated Power & Cooling System
- Rated Power-Rated Voltages and Ratio-Rated Frequency Losses and Efficiency – Impedance Voltage Drop
- Vector Group-Voltage Regulation (On-load Tap Changers & Off-load Tap Changers
- Oil & Insulation Faults-Windings Faults-Overloads and Overheating- Built-on Protections
- Built-on Protections -Differential Protection –
- Overcurrent Protection -Restricted Earth Fault Protection –
- Overload Protection
- Inrush Currents and Harmonics –
- Parallel of Transformers -Power Factor
- Lightning & Switching Overvoltages –
- Surge Arresters – Fire Protection
- Type Tests – Routine Tests
- Special Tests – Oil Testing
- Transformer Installation, Testing & Commissioning
- General Layout
- Floor Mounted Transformers – Pad Mounted Transformers – Pole Mounted Transformers – Oil Retention Basin
- Neutral Grounding – Earthing and Bonding -Transportation and Handling
- Site Acceptance Tests (SAT)
- Establishing a Preventive Maintenance & Inspection Program – Safety – Visual Inspection –
- Insulation Resistance (Oil & Solid) – Insulation Power Factor (PF) – Oil Analysis & Samples –
- Windings- Tank & Conservator – On-load Tap Changer – Bushings – Cooling System –
- Accessories & Auxiliary Equipment – Infrared Thermography –
- Schedule of Preventive Maintenance Actions & Inspections – Procedures
- Mean Time between Failures (MTBF) –
- Insulation System Aging Factors – Oil
- Oil – Paper – Bushings – Transformer Lifetime Extension
This interactive training course includes the following training methodologies as presented on the next column based on percentage of the total tuition hours:
Workshops & Work presentation
Case Studies & Practical Exercises
Videos, Sofware & General Discussion
The course instructor may modify the above training methodology before or during the course for technical reasons with no prior notice to participants.