The maintenance cycle of power transformers should be determined based on factors such as their operating conditions, load conditions, and environmental conditions. Generally speaking, for newly installed transformers, an excellent inspection should be carried out within one month after they are put into operation. For transformers that have been in long-term operation, a routine inspection should be conducted once a year. For transformers operating in harsh environments or Pri ťažkých zaťaženiach by sa mal cyklus údržby primerane skrátiť .
In terms of maintenance methods, a combination of regular power-off inspections and live detection can be adopted. Power-off inspection can better examine the various parameters and conditions of the transformer, but it will have a certain impact on the operation of the power system. Live detection can be carried out without power interruption, but it may not be able to detect some internal faults. In actual operation, appropriate Metódy údržby by sa mali vybrať na základe konkrétnych okolností .
