What is the Maintenance of Transformers ?Maintenance of transformers is essential to ensure their safe, stable and efficient operation, and the following are some common maintenance measures:Periodic inspectionAppearance check: Check whether the transformer shell is damaged, deformed, and leaking oil.Oil temperature check: Use an oil temperature gauge to measure the oil temperature and ensure that it is within the normal range.Oil level check: Observe the oil level in the oil pillow. If the oil