For dry-type transformers, there are also many problems that may arise during operation, but many people do not understand what these problems are and therefore do not know how to handle them. Next, let's take a look at the common problems and solutions of dry-type transformers.
1、 Resonance issues with fans, casings, and other components
Reason: Resonance of fans, casings, and other components will generate noise, which is generally mistaken for transformer noise.
Judgment method:
1) Shell: Press the aluminum plate (or steel plate) of the shell with your hand to see if the noise has changed. If there is a change, it indicates that the shell is resonating.
2) Fan: Use a dry long wooden stick to top the outer shell of each fan and check for any changes in noise. If any changes occur, it indicates that the fan is resonating.
3) Other components: Use a dry long wooden stick to top each component of the transformer (such as wheels, fan brackets, etc.) and check for any changes in noise. If any changes occur, it indicates that the components are resonating.
resolvent:
1) Check if the aluminum plate (or steel plate) of the casing is loose, which may cause deformation during installation. It is necessary to tighten the screws of the casing, fix the aluminum plate of the casing, and correct the deformed parts.
2) To check if the fan is loose, it is necessary to tighten the fastening bolts of the fan and place a small piece of rubber between the fan and the fan bracket to solve the problem of fan vibration.
3) If the transformer components are loose, they need to be fixed.
2、 Installation issues
Reason: Poor installation can exacerbate transformer vibration and amplify transformer noise.
Judgment method:
1) The foundation of the transformer is not firm or flat (with one corner hanging in the air), or the base plate is too thin.
2) Using channel steel to frame the transformer will increase noise.
resolvent:
1) The installation unit shall modify the original installation method.
2) Adding shockproof rubber pads under the transformer trolley can solve departmental noise.
The above are the common problems and solutions of dry-type transformers, and everyone now has a certain understanding of it.
