When installing the valve chamber cover, excessive tightening force can easily cause it to deform and leak oil. In this case, remove the leaking cover and carefully reshape it by gently tapping it with a wooden stick to restore a flat contact surface. Then, reinstall it with a new gasket. Different parts of the machine may have different oil leak issues, so be careful not to cause any damage to the equipment during the repair process. Read More

The primary source of transformer noise is the core. Core noise is caused by core vibration resulting from the magnetostriction of silicon steel sheets and magnetic attractive forces. The magnitude of magnetostriction is related to the material of the silicon steel sheets and the tightness of the core; the higher the magnetic flux density of the core, the greater the magnetostriction of the silicon steel sheets. The condition of the stacking joints in the transformer core affects the flow of magnetic flux, causing the core to generate noise of varying degrees and magnitudes. If the AC power supply contains harmonic components, it will lead to increased noise. The fundamental frequency of core noise is twice the power supply frequency, along with noise at various integer multiples of that frequency. Additionally, electromagnetic forces between winding conductors or between coils can also cause vibration and lead to noise. The following are several countermeasures for suppressing noise: Read More

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