1. The operating sound of the current transformer is abnormal:
1) The reasons for the abnormal sound of the current transformer during operation are:
① The iron core is loose, making a "buzzing" sound that does not change with the primary load; in addition, the unevenness of the semiconductor paint is applied
The internal corona and the loosening of the iron clamp screw will also cause the current transformer to produce a louder noise.
② Certain silicon steel sheets that leave the stack will have a certain "humming" sound when there is no load or light load.
③ The secondary circuit is open.
2) Handling of abnormal operating sound of current transformer:
① During operation, if abnormal sound is found in the current transformer, it can be judged from the sound, meter indication and protection abnormality whether the secondary circuit is open; if so, it can be dealt with according to the treatment method of secondary circuit open.
② If it is not an open circuit fault of the secondary circuit, but a fault of the main body, the load should be transferred and the power outage treatment should be applied.
③ If the sound is abnormally low, the power supply may not be cut off immediately; however, monitoring must be strengthened, and at the same time, it must be reported to the superior dispatcher and supervisor to arrange for the treatment of the power cut.
Treatment of abnormal operation of current transformer core you can browse related products and initiate consultations on our website.