5 Signs Your Dry Type Transformer Needs to be Repaired

Transformers are crucial in powering and supporting most workplace operations. That's why every business owner must remain proactive when it comes to transformer repairs or replacement. A faulty transformer can halt many business functions and result in costly downtime. However, you can prevent all that by conducting a thorough evaluation, proper maintenance, and timely repairs of the unit. 

dry-type-transformer

When conducting transformer assessment, the presence of the following signs will mean the unit is due for repairs or replacement.

1. Abnormal appearance and structure 

Observing the shape of the transformer is the most direct and simplest way to see if the transformer is abnormal. The transformer shell is deformed, damaged or rusted, which may affect its normal operation. Second, the vent of the transformer is blocked by foreign matter, which may also affect the heat dissipation performance of the transformer.

2. Extremely noisy

Don't ignore the noise from the transformer. If the noise is louder than normal, call a specialist to assess their health. Pitch or other noisy changes can also be a distress signal. Listen to your transformer literally, as it may tell you when something is wrong.

3. Insulation color change

The color of the transformer insulation can help you get a complete picture of its overall health. Heat is one of the most common causes of transformer damage. When the transformer runs hot for a long time, it will affect the color of the insulation, making it darker than the new transformer. You can evaluate the insulation color of the transformer by looking at the outside of the winding near the top as well as the inside part. As heat and air rise, the top of the coil looks more discolored than the bottom. If the contrast between the bottom and top of the coil is noticeable, your transformer has been handling too much heat for long time.

4. Signs of rising tides

A surge can cause visible damage to the transformer, but it can also leave more subtle damage that can cause line failure. If the coil position of your transformer has changed (for example, a shift or rotation on a plastic block or platen), your equipment has experienced a surge and should be evaluated by a transformer professional.

5. Vibration changes

Transformers vibrate naturally, but if they become very wobbly, it may indicate that its parts are starting to wear out. The shock-proof rubber pads of the dry-type transformer are located under the front and rear guide rails. Over time, they will wear out and will no longer provide any cushioning or shock absorption. In addition to indicating that the transformer is aging, additional vibration may also damage other parts of the transformer.