Common faults and treatment methods of Power Current Transformer

1. Overheating has occurred. Power Current Transformer has overheating, smoking, glue flow, etc., which may be caused by poor connection of the primary side wiring, severe oxidation of the surface of the secondary side wiring board, short circuit between the inner turns of the Power Current Transformer, or primary and secondary side insulation breakdown cause.

2, the secondary side is open. At this time, the ammeter suddenly gave no indication, and the sound of the Power Current Transformer increased significantly, and the ozone smell and a slight discharge sound could be heard near the open circuit. The hazards of the secondary side open circuit are: a. Very high voltage is generated, which poses a threat to the safety of equipment and operating personnel. b. The loss of the iron core increases, and serious heating may cause the equipment to burn out. c. The iron core produces magnetic saturation, which increases the error of the Power Current Transformer.

3. There is discharge sound or discharge phenomenon inside. If there is a discharge phenomenon on the surface of the Power Current Transformer, it may be that the surface of the transformer is too dirty and the insulation is reduced. The internal discharge sound is the reduction of the internal insulation of the current mutual inductance, which causes the primary winding to the secondary winding and to the iron core breakdown discharge.

4. The internal sound is abnormal. The reasons are: Power Current Transformer iron core fastening screws are loose, iron core is loose, silicon steel sheet vibration increases, and an abnormal sound does not change with a load; some iron cores are at no load or stop load due to poor assembly process of silicon steel sheet There is a certain buzzing sound from time to time; when the secondary side is open circuit, due to the magnetic saturation and non-sinusoidal magnetic flux, the silicon steel sheet oscillates and oscillates unevenly, making a large noise; the Power Current Transformer is seriously overloaded, causing the iron core to vibrate. Increase.

5. The oil-filled Power Current Transformer has a serious oil leak. When Power Current Transformer finds one of the above phenomena during operation, the load should be transferred and the power outage treatment should be carried out immediately.