Transformer Operations, Testing and Maintenance
Course Overview
This course focuses on critical issues that should be considered in establishing good operating practices and implementing an effective transformer and switchgear maintenance program. It provides very practical guidance for maintenance scheduling, operational and testing procedures to achieve long service life of power and distribution transformers and switchgear.
Who is this Training Course for?
• Those who are involved in the design, installation, commissioning, maintenance, testing, control, and operation of electrical substation equipment
• Industrial, utility, or plant engineers
• Maintenance Engineer
• Process Controller
• Maintenance supervisors
• Consulting engineers
• Electric utility engineers
Course Outline
Session 1
• Design fundamentals
• Types of transformers
• Nameplate data
• Transformer terminal markings
• No-load current and impedance
• Transformer characteristics
Session 2
• Transformer core construction
• Transformer coil construction
• Transformer insulation systems
• Transformer cooling systems
• Tanks, bushings and terminations
Session 3
• Off power tap changer configurations
• Power on tap changers
• On Load tap changers
• Tests on tap changers
• Transformer vector groups
Session 4
• Operating limitations
• Core loss
• Flux density and core heat losses
• Copper loss
• Relationship between load and heat produced in the windings
• Effects of voltage and or frequency variations
• Effects of harmonics on transformer performance
Session 5
• Transformer installation acceptance
• Acceptance tests
• Transformer turns ratio test
• Transformer insulation power factor and tan delta test
• Ac vs dc testing methods
Session 6
• Transformer testing
• Dc winding resistance test
• Insulation resistance
• Ac or dc high-potential test
• Polarity test
• Excitation current test
• Induced potential test
• Insulating fluid dielectric tests
• Polarisation recovery voltage test
• Transformer core ground test
• Partial discharge tests
• Sweep frequency tests
Session 7
• Oil tests
• Combustible gas tests
• Dissolved gas analysis
• Frequency domain spectroscopy
• Dielectric response and DIRANA
End of the Workshop
For Training arrangements call us on the detail below
TANZANIA: +255 749 50 26 78
SOUTH AFRICA: +27 694 31 79 73
KENYA: +255 749 50 26 78
DUBAI: +27 694 31 79 73
