Power transformers
To ensure operation and avoid costly power outages, it is important to be able to determine which power transformers need action or replacement. Our course gives you an understanding of transformer design, function, maintenance and their interaction with other systems. It also equips you with the knowledge to make informed investment decisions.
Contact us if you are interested in purchasing this classroom course, and we will do our best to help you!
Contact usThe training is held online as a live lecture.
Many of the transformers used today are old and will need to be replaced within the next few years. In connection with the procurement of new transformers, it is important that they are adapted to the current network, as well as the environment in which the transformer will be placed.
It is not certain that a 40-year-old power transformer is in worse condition than a 20-year-old power transformer. To ensure operation and avoid costly power outages, it is important to be able to determine which power transformers are in need of action or replacement. It happens that older power transformers are scrapped, even though they could be operated for many more years.
This course gives you the knowledge to be able to make well-founded decisions before investing in power transformers.
The goal
Participants will gain a basic and in-depth understanding of transformer design, functional characteristics, maintenance and interaction with the rest of the system.
The target group
Technicians, engineers, operations and maintenance personnel, consultants, contractors and plant owners. The training provides knowledge in the design, procurement, operation and maintenance of power transformers in electricity networks, power production and industry.
The topics covered
Basic properties of power transformers
- Induction, magnetic flux, reluctance, hysteresis, eddy currents, iron losses and magnetostriction
Electrical properties of power transformers
- Connection type, equivalent diagram, core types, equalization winding
- Open circuit test and short circuit test
- On-load tap changer and turnover ink
- Asymmetrical load, zero sequence impedance, short circuit impedance
- Parallel operation, simultaneous operation of transformers with different clocks
- Losses. Pressurized oil cooling, cooling fans, heat recovery
- Dry-insulated transformers, safety and maintenance of dry-insulated transformers
- Control of fan systems, transformer oils, oxidation and chemical processes
- Oil testing, purification of transformer oil
- Slow dehumidification
- Hermetically sealed power transformers
- Moving of larger transformers
Transformer protection
- Fault causes, gas monitor and flow monitor
- Temperature sensors and pressure sensors
- Inrush current and stabilization of protection
- Differential protection, short-circuit protection, earth-fault protection
- Protection equipment depending on system requirements
Insulation testing
- Aging of insulation materials
- Insulation testing
- Polarization index – Pi measurement
- DAR test
- Testing of dry-insulated transformers
- Testing of electric motors and power cables
- Sheath test
Protection of power transformers by valve arresters
- Electrical transients
- Cable lengths when installing surge arresters
- Safety distances
- Surge arresters in confined spaces
- Underlying functional characteristics
- Dimensioning based on network characteristics
Prerequisites
Basic knowledge of electric power
We take pride in delivering up-to-date courses at all times and never shy away from thinking innovatively in all fields. You and your employees will always be met by highly skilled instructors who have field experience and have faced the challenges firsthand. It is a goal that everyone gets the most out of the courses they attend. Therefore, we ensure that our instructors stay professionally updated through studies, training, and close collaboration with authorities and industry organizations. This creates an environment focused on learning and safety.
Our instructors not only have solid subject knowledge - they also have practical experience and understanding of the challenges you face in everyday life. Through close cooperation with both authorities and industry organisations, we ensure that our courses are always updated and comply with the latest safety requirements and regulations.
We take pride in delivering up-to-date courses at all times and never shy away from thinking innovatively in all fields. You and your employees will always be met by highly skilled instructors who have field experience and have faced the challenges firsthand. It is a goal that everyone gets the most out of the courses they attend. Therefore, we ensure that our instructors stay professionally updated through studies, training, and close collaboration with authorities and industry organizations.
This creates an environment focused on learning and safety.
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