How to Identify Damage Failures in Flat Wound Inductors 2

3. Turn-to-turn short circuit inspection

1. Use a multimeter to check for inter-turn short circuits. Set the multimeter to the resistance range and connect it across the two terminals of the inductor to measure for low resistance values. Normally, the inter-turn resistance of an inductor should be very high, typically above several hundred ohms. If a low resistance value is detected, it may indicate insulation damage in the inductor, leading to an inter-turn short circuit.diode,

2. Turn-to-turn short circuits may cause the inductor to malfunction or generate excessive current during operation, potentially damaging other equipment.

4. Core Inspection

1. Check whether the iron core of the inductor has obvious damage, such as deformation or fracture. Damage to the iron core may result in poor magnetic circuit performance, thereby affecting the inductor's functionality..diode

2. Check for any looseness or poor contact between the iron core and the winding. Poor contact between the iron core and the winding will result in an incomplete magnetic circuit for the inductor, affecting its performance.

5. Inductor Parameter Testing

1. Use a professional inductor tester to measure inductor parameters such as inductive reactance, leakage inductance, and quality factor. The test results can determine whether the inductor's performance is normal..diode

2. If the inductor's parameters significantly deviate from the standard values, it may indicate damage or aging, requiring repair or replacement.

In summary, the identification of damage and faults in flat wire wound inductors can be conducted through visual inspection, insulation resistance measurement, inter-turn short-circuit inspection, core examination, and inductor parameter testing. Timely detection and repair of inductor damage ensure the normal operation of the power system..diode