Transformers
Transformers
This Transformer is at explosion stage, as the oil level is lesser and there is no heat dissipation
Both the thermograms show chocked fins of transformer radiator.
In above thermogram, illustrating “Barber Pole effect”, only few strands of the cable strands carry the current.
In the thermogram at Top LEFT, the problem lying with winding connection to terminal
And in the Top RIGHT side & Bottom thermogram the problem is with external connection.
- Transformer Oil Level - If the oil level reduces below radiator entry pipe, the oil doesn’t enter in radiator and hence no heat transfer & cooling ultimately resulting in the windings getting overheated and results in explosion of transformer. The oil level remains unseen by human eyes but with periodic Thermography inspection, such transformer failures can be restricted.
This Transformer is at explosion stage, as the oil level is lesser and there is no heat dissipation
- Transformer Radiator Fins Chocked Up or Blocked
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- Electrical Conductor Weakness: “Barber Pole Effect” All the strands in a conductor may not have got crimped or few broken or because of getting heavily oxidized doesn’t carry current and the remaining strands those carrying current, get over loaded.
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And in the Top RIGHT side & Bottom thermogram the problem is with external connection.
Electrical Systems - Submenu