Interturnfouten

Interturnfouten, also known as inter-turn faults, are electrical faults that occur within the winding of a motor or transformer when an unintended electrical connection happens between two or more turns of the winding. These faults often result from insulation deterioration, mechanical damage, manufacturing defects, or environmental factors that degrade the insulation material over time.

When an interturn fault occurs, it creates a short circuit within the coil, leading to abnormal current flow that can cause localized heating, further insulation damage, and in severe cases, complete winding failure. Detecting these faults early is crucial to prevent extensive damage and ensure the reliability of electrical machinery.

Interturn faults are typically diagnosed using various methods, including partial discharge measurement, infrared thermography, and advanced signal analysis. Partial discharge testing involves monitoring the discharge activity in the winding insulation, which increases in the presence of an interturn fault. Infrared thermography can identify hot spots generated due to increased resistance caused by the fault. Signal analysis techniques analyze the motor's electrical signatures to detect anomalies associated with interturn short circuits.

Preventive measures focus on proper manufacturing practices, regular maintenance, insulation testing, and monitoring to identify early signs of deterioration. Once detected, addressing interturn faults may involve repairing or rewinding the affected coils to restore proper insulation and electrical integrity.

Understanding and managing interturn faults are essential in maintaining the operational safety and efficiency of electrical rotating equipment, preventing costly repairs and downtime.