Maintenance has gone through various stages of development. With the beginning of the industrial revolution, until recently, the most common method of maintenance was the reaction method, which means that when the machine is broken, we repair it, but if the machine works well, no maintenance activity is involved. That is, in this period the concept of maintenance was: repair the stomach if disrupted.

However, with the development of the industry, there was a need to take some measures to avoid the problems that were caused by the use of the method of reaction in maintenance, such as: the production stops for long periods to repair long periods and the possibility of large losses in machines or lives as a result of sudden and unexpected malfunction .

Here comes the thought of preventive maintenance, which is based on the idea that each machine and each part of it have a certain default age can be calculated by approximation, so before the end of its default age is replaced and thus avoid a lot of unexpected failures that occurred in the past and this is what Our company seeks for in making periodic maintenance of transformers and accessories, as well as organizing campaigns to cut the tress that interlocking with the high-pressure wires and low pressure wires . Our company has allocated hot lines to receive citizens complaints and interact with them directly to maintain faults and repair them as soon as possible .