This will provide you with practical knowledge (including tips, tricks and tools) covering the fundamentals of power transformers and switchgear. Due to the critical importance of Switchgear in electricity distribution and how its performance significantly affects the overall performance of the system and failure to efficiently disconnect faults elsewhere in the network or failure in switchgear itself is costly, resulting in additional loss of supply, damage to equipment and possibly fatal injury to personnel. It is therefore critically important that switchgear is operated and maintained correctly, within an overall asset management regime that is both economic and effective in securing a high level of system reliability. At the end of this workshop, participants will be familiar with the importance of transformer and switchgear inspection, installation and maintenance.

TRAINING FOR:

Electrical engineers, Maintenance engineers, Maintenance supervisors, Power electricians, Power engineers, Managers and technicians who work with switchgear and circuit breakers .

Among others, you will cover:

  •       Transformers and their testing
    • Routine, Type and special tests
  •       General requirements of tests
  •       Transformers Tests
    • Measurement of winding resistance
    • Measurement of voltage ratio and check of voltage vector relationship
    • Measurement of impedance voltage/short-circuit impedance (principal tapping) and load loss
    • Measurement of no load loss and current
    • Measurement of insulation resistance
    • Dielectric, Magnetic balance and Magnetising current tests
    • Temperature rise
    • Test on on-load tap changers and Short-circuit test
    • Measurement of acoustic noise level
    • Measurement of the harmonics of the NLC and power taken by fans/oil-pumps
  •       Switchgear in a network context and historic perspective
  •       Principles of current interruption
  •       Circuit breakers-Plain break, Transfer earth and Bulk / small oil volume circuit breakers
  •       Turbulator (explosion pot)
  •       Substation and switch room layouts and design
  •       Short circuit testing
  •       Safety Policies
    • Safety interlocks
    • Substation alarms
  •      Operation of modern Switchgear
  •      Asset management in a switchgear context
  •      Switchgear diagnostics etc. 

OBJECTIVES

Upon completion of this course, participant will:

  •      Understand the operation of transformers and switchgear
  •      Transformers and their testing
  •      Characteristic of insulating oil
  •      Installation of transformer and switchgear
  •      Maintenance of transformer and switchgear etc.

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