What Causes Winding Breakage?

There are several reasons that can lead to winding breakage in transformers:

(1) Unstable Line Connections:

When the winding connections in a transformer are problematic, such as poor welding, inadequate contact, or loosening, it may result in concentrated currents or localized overheating at the connection points. Prolonged overheating can accelerate the aging of internal insulation materials, ultimately causing the winding to break.

(2) Various Overvoltages:

Overvoltage occurs when the voltage surpasses the normal operating range of the equipment. Elevated voltages can increase electric field intensity, damaging the insulation materials of the winding and potentially causing partial or complete winding breakage. Various forms of overvoltage induce overcurrent in weak areas of the circuit, leading to circuit burnout.

(3) Faults such as Interturn, Phaseto-Phase, or Ground Faults:

These faults result in localized overcurrent, causing overheating at the fault points. This overheating can eventually lead to winding breakage.

Therefore, ensuring secure and reliable line connections, preventing various forms of overvoltage, and promptly addressing faults such as interturn, phaseto-phase, or ground faults are crucial measures to prevent winding breakage. This helps ensure the long-term stable operation and safety of transformers.

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