Abstract: For best in class electrical gadgets effective and dependable activity is of specific significance. They should execute their capacity securely, if conceivable lifelong, and must be as economical as conceivable over their total lifetime. Concerning the evaluation of single units like circuit breakers, transformers, overhead lines and so on the Life-Cycle-Cost strategy has been utilized for a serious long time. The idea of Life-Cycle-Cost intends to consider the assembling cost, yet in addition to consider the operational and removal costs. For this situation the strategy underpins the cost appraisal of gear, while empowering a correlation of various hardware highlights. The determination of power transformer is essential to power area. Most techniques are used by the underlying cost and don't think about the synthetically assessment of economy and innovation. In light of past examination, this paper tends to another pragmatic probabilistic life cycle cost model. At that point, so as to show the practicability of probabilistic life cycle cost for the power transformer, illustrative speculation options of genuine power transformers are examined.

| DOI: 10.17148/IARJSET.2022.9750