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Home / Technical Articles / Transformer protection systems and their primary switching arrangements

Detection and clearing of faults

The protection of power transformers is not just a question of detecting faults within the windings, cores, or tank. It’s very often a question of how the transformer is integrated into the station or system. The detection and clearing of transformer faults are intimately connected to the primary switching that is available.

Protection systems for transformers
Protection systems for transformers (photo credit:

Switching arrangements

There are too many variations of such switching arrangements to be all-inclusive but a few typical examples will suffice to demonstrate the factors and logic involved.

  1. Parallel Transformer Banks
  2. Tapped Transformer Banks
  3. Substation Design
  4. Station Service
  5. Generator Station Design

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Edvard Csanyi

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry facilities. Professional in AutoCAD programming.

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