The main modes of transformer winding damage are as follows:

1. Short-Circuit: Overcurrent or short-circuit faults can lead to a sudden increase in current within the winding, causing a short-circuit in the winding. This may result in localized heating, insulation material burning, and even the risk of fire within the winding.

2. Overheating: Prolonged high-load operation or inadequate cooling can cause the winding temperature to rise excessively, leading to insulation material aging and a reduction in its electrical insulating performance, ultimately resulting in winding failure.

3. Insulation Aging: The insulation material of the winding degrades over time, leading to decreased electrical insulation performance and an increased risk of winding damage.

4. Moisture and Contamination: Exposure of the winding to moisture and contaminating substances can cause degradation of the insulation material, increasing the risk of electrical breakdown and reducing the insulation performance of the winding.

5. Mechanical Stress: The winding may experience mechanical stress during operation, such as vibration, impact, or electromagnetic forces, which can lead to loosening or breakage of the winding conductors.

6. Overvoltages: Sudden overvoltage events, such as lightning strikes or power system faults, can cause a surge in voltage within the winding, damaging insulation material and the winding itself.

7. Corrosion: The winding may be subjected to chemical corrosion, especially when exposed to a corrosive environment, such as acidic or alkaline mediums.

8. Insulation Breakdown: The presence of any insulation cracks or damage within the winding may lead to voltage breakdown and damage to the winding.

9. Failure of Flame Retardants: The insulation of transformer windings typically contains flame retardants to reduce the risk of fires. Failure of flame retardants may increase the fire risk.

Regular maintenance and monitoring are crucial to prevent these winding damage modes and ensure the safe operation and longevity of the winding.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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