This course covers the theory, operation, maintenance and testing of power transformers and auxiliary equipment. Topics included are transformer fundamentals, transformer ratings, transformer cooling, nitrogen gas systems and insulation systems. The source concludes with in-depth discussions on transformer testing techniques. This course is applicable to technicians and engineers who need a sound understanding of power transformer operation and maintenance.

Students will learn safe and proper maintenance and testing procedures on pad-mounted, power transformers. The course covers transformers used in commercial and industrial power distribution systems, including oil and dry-type units. Larger power transformers used in utility applications are also covered.

Load and no-load tap changer maintenance, ac and dc testing, routine inspections and oil sampling and testing are covered in detail. Students will learn how to perform routine oil tests, and understand how to perform the major tests that are required. A variety of electrical test equipment from various manufacturer’s will be discussed.

Upon completion of this course, the participant should be able to:

v Explain the basic operation of a transformer.

v Discuss turns ratios and calculate terminal voltage and current.

v Discuss terminal markings and various single phase and three phase wiring schemes. (WYE vs DELTA).

v Explain how to perform a polarity test on a potential transformer.

v Discuss the electrical testing performed on transformers such as insulation resistance testing, excitation and power factor testing.

v Discuss the various tests performed on insulating oil.

1. Transformer Principles

Ø Transformers

Ø Right Hand Rule

Ø Magnetic Flux

Ø Magnetic Induction

Ø Left Hand RuleTurns Ratio

Ø Transformer Losses

Ø Transformer Types

2. Vector Diagrams

Ø Operating Principles

Ø Operation Without Load

Ø Operation with Load

3. Transformer Classifications

Ø Service Classification

Ø Instrument Transformers

a. Current

b. Potential

4. Transformer Construction (Construction)

Ø Magnetizing Circuits

Ø Losses

a. Hysteresis Loss

b. Eddy-Current Loss

Ø Efficiency

5. Cooling

Ø AirCooled Oil-Immersed

a. Water-Cooled

b. Forced-Oil Cooling

c. Self-Cooling with Air Blast

Ø Temperature Limits

Ø Transformer Loading

6. Tap Changers

Ø No-Load Tap Changer

Ø Tap Changing Under Load

Ø Phase-Angle Control

7. Transformer Connections

Ø Single Phase Circuits

Ø Two-Phase Circuits

Ø Three-Phase Circuits

8. Transformer Maintenance

Ø Insulation Testing

Ø High Potential Testing

Ø Turns Ratio Testing

Ø Polarity Testing

Ø Power Factor

Ø Excitation Current

Ø DC Winding Resistance

Ø Polarization Recovery

Ø Insulating Fluid Dielectric

Ø Dissolved Gas Analysis

9. Transformers and Relaying

Ø Transformer Faults

Ø Differential Relaying

a. Normal Load

b. External Faults

c. Internal Faults


Teguh Santosa, Ir

· Expert in Electrical Engineering

· Experienced in many project of Electrical

Field and shop technicians, field engineers, supervisors and others responsible for the testing and maintenance of power transformers rated 750kVA to 500MVA and 4.16kV to 500kV.


Jadwal Training Tahun 2017


09 – 11 Januari 2017

21 – 23 Februari 2017

29 – 31 Maret 2017

11 – 13 April 2017

08 – 10 Mei 2017

21 – 23 Mei 2017

19 – 21 Juni 2017

18 – 20 Juli 2017

08 – 10 Agustus 2017

24 – 26 September 2017

16 – 18 Oktober 2017

19 – 21 November 2017

10 – 12 Desember 2017

*Jadwal tersebut dapat disesuaikan dengan kebutuhan calon peserta

Lokasi Pelatihan:
•    Yogyakarta, Hotel Dafam Malioboro (6.000.000 IDR / participant)
•    Jakarta, Hotel Amaris Tendean (6.500.000 IDR / participant)
•    Bandung, Hotel Golden Flower (6.500.000 IDR / participant)
•    Bali, Hotel Ibis Kuta (7.500.000 IDR / participant)
•    Surabaya, Hotel Amaris(6.00.000 IDR / participant)
•    Lombok, Hotel Jayakarta(7.500.000 IDR / participant)

Investasi Pelatihan tahun 2017 ini :
•    Investasi pelatihan selama tiga hari tersebut menyesuaikan dengan jumlah peserta (on call). *Please feel free to contact us.
•    Apabila perusahaan membutuhkan paket in house training, anggaran investasi pelatihan dapat menyesuaikan dengan anggaran perusahaan.

Info lebih lanjut :


Mobile Phone : 0823 2208 6900 / 0857 2689 0879

Email : info@jogja-training.com

Jogja Training

Jogja Training adalah portal informasi training di yogyakarta.